Application Software Developer jobs at Leidos

The Civil Group at Leidos has an opening for an early career GenAI Application Developer to build and enhance AI-powered applications for an AWS Contact Center As a Service (CCAS) platform that uses Amazon Connect, Lex V2, Amazon Q in Connect, Contact Lens, Bedrock, OpenSearch, and Lambda (Python). This is a software development role focused on conversation flow design, Amazon Connect integrations, AI service orchestration, generative AI safety, and the creation of supporting APIs and data pipelines to improve customer experience through intelligent automation. You will work with senior developers, UI/UX designers, and cloud engineers to implement features that deflect customer contacts with voice/chat bots, optimize routing and flows, provide agents with real-time AI assistance, and ensure privacy/compliance controls. This is an exciting opportunity to grow your development skills while delivering secure, reliable, and innovative solutions in a mission environment. Primary Responsibilities Amazon Connect application development and configuration: Build, update, and maintain Amazon Connect contact flows, routing profiles, and queues to support both voice and chat channels. Integrate Lex V2 bots into Amazon Connect flows for call deflection, self-service transactions, and escalation. Enable and configure Contact Lens for real-time and post-contact analytics, transcription, summarization, sentiment analysis, and redaction. Configure Amazon Q in Connect domains, knowledge sources, guided workflows, and step-by-step agent assist experiences. Implement S3-based call and chat transcript storage with encryption, lifecycle policies, and retention compliance. AI orchestration and backend services: Write AWS Lambda (Python) functions to orchestrate Bedrock LLM calls, embeddings workflows, and model invocation logging. Implement OpenSearch indexing, vector/keyword queries, and knowledge synchronization triggers. Build retrieval-augmented generation (RAG) pipelines to enhance Amazon Connect agent assist and self-service knowledge. Apply structured logging, unit/integration tests, error handling, and performance/cost safeguards. Data safety and compliance: Implement AI guardrails, prompt templates, and output evaluation for safety and accuracy. Enforce PII minimization and redaction policies in Amazon Connect conversation logs. Participate in threat modeling and support remediation of findings for contact center integrations. Web and chat integration: Support CloudFront + WAF configurations for secure web chat entry points. Build APIs and event hooks to pass conversation context between web chat, Amazon Connect, and AI services. DevSecOps and operations: Contribute to Git-based CI/CD pipelines, code reviews, and documentation. Maintain runbooks, architecture diagrams, and SOPs for contact flows, bot integrations, and AI workflows. Create and monitor CloudWatch dashboards/alarms for call deflection rate, average handle time (AHT), contact resolution, and AI usage metrics. Basic Qualifications Bachelor's degree in Computer Science, Engineering, or related field and 2-4 years of relevant experience; or a Master's with 2+ years of software development with Python, including building and troubleshooting AWS Lambda functions. Hands-on experience with Amazon Connect setup and configuration, including contact flows, routing profiles, queues, and channel integration (voice, chat). Experience integrating Lex V2 bots with Amazon Connect flows. Familiarity with conversational AI design, including slot elicitation, error recovery, and safe fallback patterns. Infrastructure as Code experience (CloudFormation) and Git-based CI/CD workflows. Foundational security knowledge: least privilege IAM, encryption at rest (KMS), and secure logging/monitoring. Strong written and verbal communication; able to document designs and explain technical choices to teammates. US Citizen with ability to obtain a Public Trust clearance. Preferred Qualifications Practical exposure to full Amazon Connect deployments, including telephony setup, contact attributes, and queue performance optimization. Experience enabling and tuning Contact Lens for compliance, sentiment analysis, and post-contact QA scoring. Experience with Amazon Q in Connect for agent assist workflows and knowledge retrieval. Experience with Amazon Bedrock (LLM and embeddings) and guardrails; calling LLM APIs and prompt engineering. Knowledge of Retrieval Augmented Generation (RAG) and vector search; AWS OpenSearch Service configuration (VPC only, KMS) and k-NN/HNSW indices. Familiarity with KMS key policies, grants, and cross-account access; S3 data protection (BPA, lifecycle, access points). Experience with AWS WAF, CloudFront, and edge security patterns. Observability and analytics skills: CloudWatch dashboards/alarms, X-Ray, Athena/Glue. Understanding of privacy/compliance considerations (PII redaction, data retention), and familiarity with FISMA and FedRAMP concepts as applied to contact centers. Certifications (any of): AWS Developer Associate, AWS Solutions Architect Associate/Professional, AWS AI Specialty, AWS DevOps Engineer, CISSP/CCSP. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting:November 14, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $69,550.00 - $125,725.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Database developer to support front end systems (as needed by developers across the organization, in support of web services, third party, or internal development needs) to the exclusion of reporting needs by other departments. Developed code includes but is not limited to PL/SQL in the form of Triggers, Procedures, Functions, & Materialized Views. Generates custom driven applications for intra-department use for business users in a rapid application development platform (primarily APEX). Responsible for functional testing and deployment of code through the development life cycle. Works with end-users to obtain business requirements. Responsible for developing, testing, improving, and maintaining new and existing processes to help users retrieve data effectively. Collaborates with administrators and business users to provide technical support and identify new requirements. Responsibilities Responsibilities: Design stable, reliable and effective database processes. Solve database usage issues and malfunctions. Gather user requirements and identify new features. Provide data management support to users. Ensure all database programs meet company and performance requirements. Research and suggest new database products, services, and protocols. Requirements and skills In-depth understanding of data management (e.g. permissions, security, and monitoring) Excellent analytical and organization skills An ability to understand front-end user requirements and a problem-solving attitude Excellent verbal and written communication skills Assumes responsibility for related duties as required or assigned. Stays informed regarding current computer technologies and relational database management systems with related business trends and developments. Consults with respective IT management in analyzing business functions and management needs and seeks new and more effective solutions. Seeks out new systems and software that reduces processing time and/or provides better information availability and decision-making capability. Job Type: Full-time Pay: From $115,000- 128,000 yearly Expected hours: 40 per week Benefits: Dental insurance Health insurance Paid time off Vision insurance Paid time off (PTO) Various health insurance options & wellness plans Required Knowledge Considerable knowledge of on-line and design of computer applications. Require Experience One to three years of database development/administration experience. Skills/Abilities Strong creative and analytical thinking skills. Well organized with strong project management skills. Good interpersonal and supervisory abilities. Ability to train and provide aid others.

Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges across the globe. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. With offices across the United States engaging in the defense, space, cyber and commercial fields, Leidos provides responsive, cost-effective engineering, scientific and IT solutions. Leidos is well known for our people-oriented culture, positive work environment, technical excellence, and resilient business ethics. Within the Defense Sector, the Airborne Systems Business Area at Leidos currently has an opening for a talented Aviation Software Engineer to work in our Huntsville office. This is an exciting opportunity to use your experience to help develop software for tactical strike, sensors, CUAS, and UAS solutions. This position focuses on the development of robust, innovative software frameworks, as well as the fielding, support, and maintenance of software products. Software products range from analysis tools/simulations, mission planning software, and components of mission-critical systems. Primary Responsibilities. Design and develop robust C++ software under the direction of a senior software engineer. Assist with creating and executing unit and integration tests on software components. Perform as part of an agile software development team for tasking and progress reporting. Participate in code reviews to maintain code quality and share knowledge with the team. Troubleshoot and resolve application issues and bugs in a timely manner. Other software development duties as assigned. Use GitLab software pipeline for performing configuration management and automated testing Direct communication with customers, end users, and team members will be required on a frequent basis. Basic Qualifications. Candidate must possess at least a bachelor's degree in software engineering, Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, Mathematics, or equivalent technical degree with an overall GPA of 3.0 or higher. Candidate should have 2-8 years of relevant technical experience. Have a proven track record of implementing software development principles. Candidate must demonstrate a strong competency in software development in C++. Have experience writing unit and integration tests with unit test frameworks. Possess an aptitude for the technical skills required for software development, configuration management, and software quality engineering concepts. Have strong analytical and process improvement skills along with a personal drive for details and quality workmanship. Possess an aptitude for the technical skills required for software test and software quality engineering concepts. Demonstrate familiarity with Microsoft Office (Outlook, Word, Excel, and PowerPoint). Have good communication skills. Security Clearance Qualifications. Must be a U.S. Citizen with the ability to obtain and maintain a Secret Security Clearance. Preferred Qualifications. Experience with applicable industry standards (IEEE 12207, CMMI, DO-178C and/or DO-278, RMF) is a plus. Candidate is expected to accept constructive feedback from more senior software team members. The ability to work across multiple products under development by multiple small teams is highly desirable. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting:September 22, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $69,550.00 - $125,725.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos has a new and exciting opportunity for a Principal ETL Developer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security! Job Description: We have an IMMEDIATE NEED for a Principal ETL developer to play a pivotal role in shaping, leading, and implementing cutting-edge data flow solutions centered around Apache NiFi. The candidate will provide technical expertise and support in the design, development, implementation and testing of customer tools and applications in support of Extracting, Transforming and Loading (ETL) of data into an enterprise Data Lake. The candidate will be responsible for defining architectural best practices, optimizing performance in large-scale environments, and mentoring junior developers, ensuring the delivery of robust, scalable, and secure data flow solutions that drive critical customer needs. Based in a DevOps framework, the ETL Developer participates in and directs major deliverables of projects through all aspects of the software development lifecycle. **This is a remote position. However, you must be able and willing to periodically commute into Bethesda, MD for meetings with the team.** Primary Responsibilities: Architecting complex NiFi data pipeline design: Design and develop enterprise-level ETL architectures and implement NiFi data pipelines for large-scale data ingestion, transformation, and processing from diverse sources. Performance optimization and tuning: Optimize NiFi data flows, including processor tuning, memory management, and load balancing, ensuring optimal performance for batch and real-time processing. Advanced troubleshooting and problem resolution: Identify, diagnose, and resolve complex NiFi data flow issues, including performance bottlenecks, data discrepancies, and integration failures. Integrating with big data and cloud technologies: Seamlessly integrate NiFi with various databases, big data ecosystems, and cloud platforms (e.g., AWS, OCI, Azure), demonstrating expertise in relevant services (e.g., Kafka, Elasticsearch, S3, SQS/SNS). Defining best practices and standards: Establish best practices for NiFi development, deployment, security, and governance, ensuring adherence to enterprise-wide data management policies. Documentation and knowledge sharing: Create and maintain comprehensive documentation for NiFi data flows, mappings, architectures, and standard operating procedures, ensuring knowledge transfer and promoting efficient team operations. Collaboration and communication: Collaborate effectively with data architects, data engineers, application/service developers, and other stakeholders to translate business requirements into robust technical solutions and effectively communicate complex technical concepts to both technical and non-technical audiences. Mentorship and team leadership: Mentor junior developers, provide technical guidance, conduct code reviews, and foster a collaborative learning environment. **U.S. Citizenship is required per the contract. **Though a clearance is not immediately required, being willing and able to obtain a TS/SCI w/ Poly is required. Basic Qualifications: In-depth experience designing, developing, and managing complex NiFi data flow solutions in large-scale enterprise environments. In-depth knowledge of NiFi architecture, processors, and configurations, along with hands-on experience with NiFi Registry and clustering for high availability and scalability. Proficiency in programming languages like Java and Python for custom NiFi processor development and scripting for automation. Proficiency writing and optimizing complex queries, along with experience in managing relational and NoSQL databases (e.g., Postgres, Elasticsearch, DynamoDB). Direct experience with real-time streaming, and API integration (REST) for seamless data connectivity. Direct experience with cloud platforms like AWS, Azure, or OCI and related data services Strong ability to analyze complex data challenges, identify root causes, and implement effective solutions. Strong ability to collaborate effectively with cross-functional teams, articulate technical concepts clearly, and provide effective mentorship. Bachelor's degree with 12+ years of prior relevant experience or Master's with 10+ years of relevant experience. Preferred Qualifications: Active TS/SCI with Polygraph security clearance In-depth experience deploying ETL solutions in an AWS environment. CABARESTON If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting:December 8, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $131,300.00 - $237,350.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos has a new and exciting opportunity for a Principal ETL Developer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security! Job Description: We have an IMMEDIATE NEED for a Principal ETL developer to play a pivotal role in shaping, leading, and implementing cutting-edge data flow solutions centered around Apache NiFi. The candidate will provide technical expertise and support in the design, development, implementation and testing of customer tools and applications in support of Extracting, Transforming and Loading (ETL) of data into an enterprise Data Lake. The candidate will be responsible for defining architectural best practices, optimizing performance in large-scale environments, and mentoring junior developers, ensuring the delivery of robust, scalable, and secure data flow solutions that drive critical customer needs. Based in a DevOps framework, the ETL Developer participates in and directs major deliverables of projects through all aspects of the software development lifecycle. This is a remote position. However, you must be able and willing to periodically commute into Bethesda, MD for meetings with the team. Primary Responsibilities: * Architecting complex NiFi data pipeline design: Design and develop enterprise-level ETL architectures and implement NiFi data pipelines for large-scale data ingestion, transformation, and processing from diverse sources. * Performance optimization and tuning: Optimize NiFi data flows, including processor tuning, memory management, and load balancing, ensuring optimal performance for batch and real-time processing. * Advanced troubleshooting and problem resolution: Identify, diagnose, and resolve complex NiFi data flow issues, including performance bottlenecks, data discrepancies, and integration failures. * Integrating with big data and cloud technologies: Seamlessly integrate NiFi with various databases, big data ecosystems, and cloud platforms (e.g., AWS, OCI, Azure), demonstrating expertise in relevant services (e.g., Kafka, Elasticsearch, S3, SQS/SNS). * Defining best practices and standards: Establish best practices for NiFi development, deployment, security, and governance, ensuring adherence to enterprise-wide data management policies. * Documentation and knowledge sharing: Create and maintain comprehensive documentation for NiFi data flows, mappings, architectures, and standard operating procedures, ensuring knowledge transfer and promoting efficient team operations. * Collaboration and communication: Collaborate effectively with data architects, data engineers, application/service developers, and other stakeholders to translate business requirements into robust technical solutions and effectively communicate complex technical concepts to both technical and non-technical audiences. * Mentorship and team leadership: Mentor junior developers, provide technical guidance, conduct code reviews, and foster a collaborative learning environment. U.S. Citizenship is required per the contract. Though a clearance is not immediately required, being willing and able to obtain a TS/SCI w/ Poly is required. Basic Qualifications: * In-depth experience designing, developing, and managing complex NiFi data flow solutions in large-scale enterprise environments. * In-depth knowledge of NiFi architecture, processors, and configurations, along with hands-on experience with NiFi Registry and clustering for high availability and scalability. * Proficiency in programming languages like Java and Python for custom NiFi processor development and scripting for automation. * Proficiency writing and optimizing complex queries, along with experience in managing relational and NoSQL databases (e.g., Postgres, Elasticsearch, DynamoDB). * Direct experience with real-time streaming, and API integration (REST) for seamless data connectivity. * Direct experience with cloud platforms like AWS, Azure, or OCI and related data services * Strong ability to analyze complex data challenges, identify root causes, and implement effective solutions. * Strong ability to collaborate effectively with cross-functional teams, articulate technical concepts clearly, and provide effective mentorship. * Bachelor's degree with 12+ years of prior relevant experience or Master's with 10+ years of relevant experience. Preferred Qualifications: * Active TS/SCI with Polygraph security clearance * In-depth experience deploying ETL solutions in an AWS environment. CABARESTON If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting: December 8, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $131,300.00 - $237,350.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

**Leidos** has a new and exciting opportunity for a **Principal** **ETL Developer** in our **National Security Sector's (NSS) Cyber & Analytics Business Area (CABA)** . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At **Leidos** , we offer **competitive benefits** , including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. **Join us and make a difference in National Security!** **Job Description** : We have an IMMEDIATE NEED for a Principal ETL developer to play a pivotal role in shaping, leading, and implementing cutting-edge data flow solutions centered around Apache NiFi. The candidate will provide technical expertise and support in the design, development, implementation and testing of customer tools and applications in support of Extracting, Transforming and Loading (ETL) of data into an enterprise Data Lake. The candidate will be responsible for defining architectural best practices, optimizing performance in large-scale environments, and mentoring junior developers, ensuring the delivery of robust, scalable, and secure data flow solutions that drive critical customer needs. Based in a DevOps framework, the ETL Developer participates in and directs major deliverables of projects through all aspects of the software development lifecycle. ****This is a remote position. However, you must be able and willing to periodically commute into Bethesda, MD for meetings with the team.**** **Primary Responsibilities:** + Architecting complex NiFi data pipeline design: Design and develop enterprise-level ETL architectures and implement NiFi data pipelines for large-scale data ingestion, transformation, and processing from diverse sources. + Performance optimization and tuning: Optimize NiFi data flows, including processor tuning, memory management, and load balancing, ensuring optimal performance for batch and real-time processing. + Advanced troubleshooting and problem resolution: Identify, diagnose, and resolve complex NiFi data flow issues, including performance bottlenecks, data discrepancies, and integration failures. + Integrating with big data and cloud technologies: Seamlessly integrate NiFi with various databases, big data ecosystems, and cloud platforms (e.g., AWS, OCI, Azure), demonstrating expertise in relevant services (e.g., Kafka, Elasticsearch, S3, SQS/SNS). + Defining best practices and standards: Establish best practices for NiFi development, deployment, security, and governance, ensuring adherence to enterprise-wide data management policies. + Documentation and knowledge sharing: Create and maintain comprehensive documentation for NiFi data flows, mappings, architectures, and standard operating procedures, ensuring knowledge transfer and promoting efficient team operations. + Collaboration and communication: Collaborate effectively with data architects, data engineers, application/service developers, and other stakeholders to translate business requirements into robust technical solutions and effectively communicate complex technical concepts to both technical and non-technical audiences. + Mentorship and team leadership: Mentor junior developers, provide technical guidance, conduct code reviews, and foster a collaborative learning environment. ****U.S. Citizenship is required per the contract.** ****Though a clearance is not immediately required, being willing and able to obtain a TS/SCI w/ Poly is required.** **Basic Qualifications:** + In-depth experience designing, developing, and managing complex NiFi data flow solutions in large-scale enterprise environments. + In-depth knowledge of NiFi architecture, processors, and configurations, along with hands-on experience with NiFi Registry and clustering for high availability and scalability. + Proficiency in programming languages like Java and Python for custom NiFi processor development and scripting for automation. + Proficiency writing and optimizing complex queries, along with experience in managing relational and NoSQL databases (e.g., Postgres, Elasticsearch, DynamoDB). + Direct experience with real-time streaming, and API integration (REST) for seamless data connectivity. + Direct experience with cloud platforms like AWS, Azure, or OCI and related data services + Strong ability to analyze complex data challenges, identify root causes, and implement effective solutions. + Strong ability to collaborate effectively with cross-functional teams, articulate technical concepts clearly, and provide effective mentorship. + Bachelor's degree with 12+ years of prior relevant experience or Master's with 10+ years of relevant experience. **Preferred Qualifications:** + Active TS/SCI with Polygraph security clearance + In-depth experience deploying ETL solutions in an AWS environment. CABARESTON If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. **Original Posting:** December 8, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. **Pay Range:** Pay Range $131,300.00 - $237,350.00 The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. **About Leidos** Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit ************** . **Pay and Benefits** Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at **************/careers/pay-benefits . **Securing Your Data** Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at ***************************** . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission (******************************* . **Commitment to Non-Discrimination** All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. \#Remote REQNUMBER: R-00171699 All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.

Senior full-stack engineer to lead design, implementation, and sustainment of mission-critical web applications for defense customers. You will own architecture and delivery across .NET backends, Vue.js front ends, and SQL Server data layers, and shepherd solutions through secure SDLC, security compliance, and fielded deployments. This role requires technical leadership, systems thinking, and proven experience delivering reliable software in controlled or constrained environments. This position can be worked remote, but strong preference will be given to candidates local to Newport News, VA. Key responsibilities Design and implement scalable, secure backend services using C# (.NET Framework / .NET Core / ASP.NET) that satisfy performance, reliability, and accreditation requirements. Build and document RESTful Web APIs, leveraging OpenAPI/Swagger standards for discoverability and integration. Build front-end architecture and delivery using Vue.js/Nuxt, TypeScript, tailwind, component design, and modern state management patterns. Design relational database schemas, stored procedures, and queries with a focus on performance and maintainability. Drive API design and integrations, message patterns, and secure data exchanges. Own technical documentation, security artifacts, and deployment packages required for accreditation and fielding. Mentor and lead cross-functional teams; review code, set standards, and enforce best practices. Establish and maintain automated unit tests (e.g., NUnit) and contribute to overall test coverage strategy. Participate in incident postmortems and provide rapid response support for production and field issues. Coordinate with product, QA, and systems engineering to meet contract milestones, and audit requirements. Required qualifications Bachelor's Degree with 8 years professional software development experience with substantial full-stack delivery. Experience can be considered in lieu of a degree. Ability to obtain and maintain a TS/SCI Deep expertise in C# and .NET (Framework and Core/ASP.NET) and proven track record building backend systems. Strong mastery of Vue.js (or equivalent FE framework) and modern front-end engineering practices, including TypeScript, component patterns, tailwind, and performance optimization. Solid understanding of relational databases (SQL, schema design, performance considerations). Solid grasp of secure design principles and secure coding practices aligned to DoD requirements. Proven ability to design for constrained or disconnected deployments and to package software for controlled networks. Excellent communication skills; ability to present technical tradeoffs to leadership and mentor junior/mid engineers. Preferred qualifications Extensive experience with Microsoft SQL Server: indexing strategies, T-SQL optimization, and capacity planning. Prior experience in defense, intelligence, or classified environments; familiarity with accreditation lifecycle. Familiarity with performance/load testing and tools (e.g., JMeter) and capacity planning for mission systems. Background in data pipelines, integration middleware (e.g., NiFi), or message brokers (ActiveMQ/Artemis, Kafka). If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting:November 13, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

The Opportunity: As a back-end developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop software, but to help create a system that will make a difference, we need you on our team. We're looking for a developer like you with the skills needed to develop software and systems from vision to production ready. This role is more than just coding. As a back-end developer at Booz Allen, you'll use your passion to learn new tools and techniques and identify needed system improvements. You'll help clients overcome their most difficult challenges using the latest architectural approaches, tools, and technologies. You'll help make sure the solution developed by the team considers the current architecture and operating environment, as well as future functionality and enhancements. Work with us as we shape systems for the better. Join us. The world can't wait. You Have: * 4+ years of experience designing, modifying, developing, writing, and implementing software programming applications * 4+ years of experience designing, optimizing, and maintaining NoSQL databases * Experience with Python coding * Experience leading end-to-end design, scoping, and implementation of AWS-based tools * Experience with API development * Experience in image processing, data exploitation, and analysis algorithm development * Experience creating solutions to complex problems within a collaborative team environment * Active TS/SCI clearance; willingness to take a polygraph exam * Bachelor's degree and 4+ years of experience in software engineering, or Master's degree and 2+ years of experience in software engineering Nice If You Have: * Experience with DynamoDB * Experience with C++ * Experience with software configuration management using Git * Experience with containerization tools and techniques * Experience using back-end and front-end languages to develop complete solutions * Ability to acquire client requirements and resolve workflow problems through automation optimization Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required. Compensation At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $69,300.00 to $158,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date. Identity Statement As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Work Model Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely. * If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility. * If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

The Opportunity: As a back-end developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop software, but to help create a system that will make a difference, we need you on our team. We're looking for a developer like you with the skills needed to develop software and systems from vision to production ready. This role is more than just coding. As a back-end developer at Booz Allen, you'll use your passion to learn new tools and techniques and identify needed system improvements. You'll help clients overcome their most difficult challenges using the latest architectural approaches, tools, and technologies. You'll help make sure the solution developed by the team considers the current architecture and operating environment, as well as future functionality and enhancements. Work with us as we shape systems for the better. Join us. The world can't wait. You Have: * 4+ years of experience designing, modifying, developing, writing, and implementing software programming applications * 4+ years of experience designing, optimizing and maintaining NoSQL databases * Experience with Python coding * Experience leading end-to-end design, scoping, and implementation of AWS-based tools * Experience with API Development * Experience in image processing, data exploitation, and analysis algorithm development * Experience in creating solutions to complex problems within a collaborative team environment * Active TS/SCI clearance; willingness to take a polygraph exam * Bachelor's degree and 4+ years of experience in software engineering, or Master's degree and 2+ years of experience in software engineering Nice If You Have: * Experience with DynamoDB * Experience with C++ * Experience with software configuration management using Git * Experience with containerization tools and techniques * Experience using back-end and front-end languages to develop complete solutions * Ability to acquire client requirements and resolve workflow problems through automation optimization Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required. Compensation At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $69,300.00 to $158,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date. Identity Statement As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Work Model Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely. * If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility. * If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

The Opportunity: As a back-end developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop software, but to help create a system that will make a difference, we need you on our team. We're looking for a developer like you with the skills needed to develop software and systems from vision to production ready. This role is more than just coding. As a back-end developer at Booz Allen, you'll use your passion to learn new tools and techniques and identify needed system improvements. You'll help clients overcome their most difficult challenges using the latest architectural approaches, tools, and technologies. You'll help make sure the solution developed by the team considers the current architecture and operating environment, as well as future functionality and enhancements. Work with us as we shape systems for the better. Join us. The world can't wait. You Have: 4+ years of experience designing, modifying, developing, writing, and implementing software programming applications 4+ years of experience designing, optimizing, and maintaining NoSQL databases Experience with Python coding Experience leading end-to-end design, scoping, and implementation of AWS-based tools Experience with API development Experience in image processing, data exploitation, and analysis algorithm development Experience creating solutions to complex problems within a collaborative team environment Active TS/SCI clearance; willingness to take a polygraph exam Bachelor's degree and 4+ years of experience in software engineering, or Master's degree and 2+ years of experience in software engineering Nice If You Have: Experience with DynamoDB Experience with C++ Experience with software configuration management using Git Experience with containerization tools and techniques Experience using back-end and front-end languages to develop complete solutions Ability to acquire client requirements and resolve workflow problems through automation optimization Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required. Compensation At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $69,300.00 to $158,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date. Identity Statement As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Work Model Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely. If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility. If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

Database developer to support front end systems (as needed by developers across the organization, in support of web services, third party, or internal development needs) to the exclusion of reporting needs by other departments. Developed code includes but is not limited to PL/SQL in the form of Triggers, Procedures, Functions, & Materialized Views. Generates custom driven applications for intra-department use for business users in a rapid application development platform (primarily APEX). Responsible for functional testing and deployment of code through the development life cycle. Works with end-users to obtain business requirements. Responsible for developing, testing, improving, and maintaining new and existing processes to help users retrieve data effectively. Collaborates with administrators and business users to provide technical support and identify new requirements. Responsibilities Responsibilities: Design stable, reliable and effective database processes. Solve database usage issues and malfunctions. Gather user requirements and identify new features. Provide data management support to users. Ensure all database programs meet company and performance requirements. Research and suggest new database products, services, and protocols. Requirements and skills In-depth understanding of data management (e.g. permissions, security, and monitoring) Excellent analytical and organization skills An ability to understand front-end user requirements and a problem-solving attitude Excellent verbal and written communication skills Assumes responsibility for related duties as required or assigned. Stays informed regarding current computer technologies and relational database management systems with related business trends and developments. Consults with respective IT management in analyzing business functions and management needs and seeks new and more effective solutions. Seeks out new systems and software that reduces processing time and/or provides better information availability and decision-making capability. Job Type: Full-time Pay: From $115,000- 128,000 yearly Expected hours: 40 per week Benefits: Dental insurance Health insurance Paid time off Vision insurance Paid time off (PTO) Various health insurance options & wellness plans Required Knowledge Considerable knowledge of on-line and design of computer applications. Require Experience One to three years of database development/administration experience. Skills/Abilities Strong creative and analytical thinking skills. Well organized with strong project management skills. Good interpersonal and supervisory abilities. Ability to train and provide aid others.

Database developer to support front end systems (as needed by developers across the organization, in support of web services, third party, or internal development needs) to the exclusion of reporting needs by other departments. Developed code includes but is not limited to PL/SQL in the form of Triggers, Procedures, Functions, & Materialized Views. Generates custom driven applications for intra-department use for business users in a rapid application development platform (primarily APEX). Responsible for functional testing and deployment of code through the development life cycle. Works with end-users to obtain business requirements. Responsible for developing, testing, improving, and maintaining new and existing processes to help users retrieve data effectively. Collaborates with administrators and business users to provide technical support and identify new requirements. Responsibilities Responsibilities: Design stable, reliable and effective database processes. Solve database usage issues and malfunctions. Gather user requirements and identify new features. Provide data management support to users. Ensure all database programs meet company and performance requirements. Research and suggest new database products, services, and protocols. Requirements and skills In-depth understanding of data management (e.g. permissions, security, and monitoring) Excellent analytical and organization skills An ability to understand front-end user requirements and a problem-solving attitude Excellent verbal and written communication skills Assumes responsibility for related duties as required or assigned. Stays informed regarding current computer technologies and relational database management systems with related business trends and developments. Consults with respective IT management in analyzing business functions and management needs and seeks new and more effective solutions. Seeks out new systems and software that reduces processing time and/or provides better information availability and decision-making capability. Job Type: Full-time Pay: From $115,000- 128,000 yearly Expected hours: 40 per week Benefits: Dental insurance Health insurance Paid time off Vision insurance Paid time off (PTO) Various health insurance options & wellness plans Required Knowledge Considerable knowledge of on-line and design of computer applications. Require Experience One to three years of database development/administration experience. Skills/Abilities Strong creative and analytical thinking skills. Well organized with strong project management skills. Good interpersonal and supervisory abilities. Ability to train and provide aid others.

Database developer to support front end systems (as needed by developers across the organization, in support of web services, third party, or internal development needs) to the exclusion of reporting needs by other departments. Developed code includes but is not limited to PL/SQL in the form of Triggers, Procedures, Functions, & Materialized Views. Generates custom driven applications for intra-department use for business users in a rapid application development platform (primarily APEX). Responsible for functional testing and deployment of code through the development life cycle. Works with end-users to obtain business requirements. Responsible for developing, testing, improving, and maintaining new and existing processes to help users retrieve data effectively. Collaborates with administrators and business users to provide technical support and identify new requirements. Responsibilities Responsibilities: Design stable, reliable and effective database processes. Solve database usage issues and malfunctions. Gather user requirements and identify new features. Provide data management support to users. Ensure all database programs meet company and performance requirements. Research and suggest new database products, services, and protocols. Requirements and skills In-depth understanding of data management (e.g. permissions, security, and monitoring) Excellent analytical and organization skills An ability to understand front-end user requirements and a problem-solving attitude Excellent verbal and written communication skills Assumes responsibility for related duties as required or assigned. Stays informed regarding current computer technologies and relational database management systems with related business trends and developments. Consults with respective IT management in analyzing business functions and management needs and seeks new and more effective solutions. Seeks out new systems and software that reduces processing time and/or provides better information availability and decision-making capability. Job Type: Full-time Pay: From $115,000- 128,000 yearly Expected hours: 40 per week Benefits: Dental insurance Health insurance Paid time off Vision insurance Paid time off (PTO) Various health insurance options & wellness plans Required Knowledge Considerable knowledge of on-line and design of computer applications. Require Experience One to three years of database development/administration experience. Skills/Abilities Strong creative and analytical thinking skills. Well organized with strong project management skills. Good interpersonal and supervisory abilities. Ability to train and provide aid others.

Database developer to support front end systems (as needed by developers across the organization, in support of web services, third party, or internal development needs) to the exclusion of reporting needs by other departments. Developed code includes but is not limited to PL/SQL in the form of Triggers, Procedures, Functions, & Materialized Views. Generates custom driven applications for intra-department use for business users in a rapid application development platform (primarily APEX). Responsible for functional testing and deployment of code through the development life cycle. Works with end-users to obtain business requirements. Responsible for developing, testing, improving, and maintaining new and existing processes to help users retrieve data effectively. Collaborates with administrators and business users to provide technical support and identify new requirements. Responsibilities Responsibilities: Design stable, reliable and effective database processes. Solve database usage issues and malfunctions. Gather user requirements and identify new features. Provide data management support to users. Ensure all database programs meet company and performance requirements. Research and suggest new database products, services, and protocols. Requirements and skills In-depth understanding of data management (e.g. permissions, security, and monitoring) Excellent analytical and organization skills An ability to understand front-end user requirements and a problem-solving attitude Excellent verbal and written communication skills Assumes responsibility for related duties as required or assigned. Stays informed regarding current computer technologies and relational database management systems with related business trends and developments. Consults with respective IT management in analyzing business functions and management needs and seeks new and more effective solutions. Seeks out new systems and software that reduces processing time and/or provides better information availability and decision-making capability. Job Type: Full-time Pay: From $115,000- 128,000 yearly Expected hours: 40 per week Benefits: Dental insurance Health insurance Paid time off Vision insurance Paid time off (PTO) Various health insurance options & wellness plans Required Knowledge Considerable knowledge of on-line and design of computer applications. Require Experience One to three years of database development/administration experience. Skills/Abilities Strong creative and analytical thinking skills. Well organized with strong project management skills. Good interpersonal and supervisory abilities. Ability to train and provide aid others.

Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges across the globe. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Are you ready for your next career challenge? The Non-Kinetic Effects Business Area, part of the Defense Sector at Leidos, currently has an opening for a cleared Software Engineer to work in our Beavercreek, OH Office. This is an exciting opportunity to use your experience helping the Air Force Research Lab, Air Force Lifecycle Management Center, and other DoD missions. Your role will be to support our diverse portfolio of programs through a combination of software design and development, hardware interfacing and integration, laboratory experimentation, ground and flight testing to deploy cutting edge, next generation solutions. Primary Responsibilities. Design, develop and maintain mission-critical software in support of national defense, and intelligence gathering products for both airborne and ground-based systems Responsible for performing the software engineering function, including the design, development, testing, troubleshooting, and debugging software programs for enhancements and new software-intensive systems and products. Applies appropriate principles, standards, processes, procedures and tools throughout the software development life cycle. Duties include software requirements analysis, analysis of hardware compatibility, development of software products and tools used for design, development and maintenance of infrastructure, and platforms. Develops technical solutions that require collaboration with internal experts, deep analyses and understanding of impact on end-product/solution. Develops solutions to technical problems and issues that are unclear and require deep technical knowledge. Participate in laboratory, ground and flight testing to validate software Document and communicate proposed software solutions with integrated, cross-functional engineering teams in a fast paced highly technical environment Works independently to achieve day-to-day objectives with significant impact on operational results or project deliverables. Responsible for entire projects or processes within a technical area. Stay up to date on state-of-the-art programming techniques and software technologies Participate in software design and code reviews to ensure delivery of quality products and enhance skillsets Basic Qualifications. Bachelor's degree and 4-8 years of prior relevant experience or a Master's degree with 2-4 years of experience in software engineering, computer engineering or related field. Experience programming in one or more of the following languages: C++, Java, Python Experienced in systems integration, maintenance, and troubleshooting of complex system problems Experience working in a SIL environment Ability to communicate effectively in writing and verbally from informal one-on-one discussions or in a small group environment. Work well within a team and independently with minimal supervision. Ability to work within a dynamic work environment, ability to handle multiple tasks at once (multi-task) Requires deep understanding of and ability to apply principles, theories, and concepts of technical domain and has broad understanding of other related specialty areas. Strong desire to grow and learn new technologies. Must be a US Citizen. Strong interpersonal and communication skills Security Clearance Requirements. Must be a US Citizen Must have an active DoD Secret level security clearance Preferred Qualifications. Active DoD TS/SCI clearance Familiar with Agile Methodologies, preferably SCRUM or Kanban Experience with Atlassian tools such as JIRA, Confluence, Bitbucket Experience with model and simulation environments to support simulation and test Experience with Live and Virtual Constructive environments to understand complex systems and troubleshooting points for integration Familiarity with DoD Open Architectures such as OMS and SOSA Experience with containerization technologies such as docker or podman Experience with Kubernetes Experience developing and deploying to offline environments Strong understanding of Linux systems Experience with Unit Testing and CI/CD Strong understanding of IP based network protocols such as TCP, UDP, and HTTP Prior experience working with the DoD Come break things (in a good way). Then build them smarter. We're the tech company everyone calls when things get weird. We don't wear capes (they're a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it's always been done.” Original Posting:December 24, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Top SecretTRAVEL: Yes, 10% of the TimeDescriptionAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history. The Northrop Grumman C2 & Weapons Integration (CWI) Artificial Intelligence (AI) Center of Excellence in Beavercreek, Ohio is seeking a highly motivated Principal AI Software Engineer to join our team. We have a state-of-the-art research facility where our team works on some of the most challenging problems related to AI Augmentation and Automation. Research areas include Large Language Models (LLMs), advanced AI-based natural language processing (NLP), natural language understanding (NLU), Natural Language Generation (NLG), AI-based decision-making, sensor fusion, data fusion, computer vision, and image processing. We are on the cutting edge of responsible AI and explainable AI adoption. We invite you to apply to this requisition so you can learn about the exciting research we do and tell us about how you can help our team! Successful candidates will demonstrate a broad skill set balanced between interpersonal and technical capabilities developing sustainable quality products. They will have a track record as an effective communicator and problem solver who is capable of developing and maintaining good working relationships with internal and external stakeholders. The selected candidates will work closely with other AI/ML and software engineers to accomplish the following: Define, develop, and deliver novel mathematical and statistical modeling and algorithm development to tackle the challenges of prediction, optimization, and classification. Apply machine learning algorithms to large sets of structured and unstructured data to solve a broad range of problems that include applications in autonomy, pattern recognition, target detection and tracking, recommendation and decision support systems, and robotic systems. Design, develop, document, test, debug, and deploy state-of-the-art AI/ML applications. Collaborate with cross-functional team to deploy AI/ML solutions in development and production environments. Regularly demonstrate progress to customers. Basic Qualifications Bachelor's degree in Computer Science or related STEM degree with 5 years' experience OR Master's degree in Computer Science or related STEM degree with 3 years' experience Experience with one of more AI models and algorithms: LLMs, DNN, genetic algorithms, embedding models, deep learning, etc. Experience developing systems with AI/ML frameworks and libraries such as PyTorch, TensorFlow, Keras, and Scikit-learn. Development experience should span the ML pipeline and include: working with novel datasets, data processing and preparation, training and fine-tuning ML systems, modifying existing deep learning architectures as well as coding from architecture diagrams, and evaluating system performance using established and novel metrics and methods. Ability to carry out rapid prototyping and proof-of-concept demonstrations. Possess general familiarity with applied machine learning concepts including: multilayer perceptrons, CNNs, LSTMs, transformer models, supervised/unsupervised learning methods, reinforcement learning methods, as well as statistical modeling and graphical models. Possess general familiarity with computational and statistical learning theory. Experience with web application development frameworks such as Flask, FastAPI. Understanding of software engineering best practices including source control and software architecture Able to obtain a U.S. Government Top Secret security clearance (U.S. citizenship is a pre-requisite) Preferred Qualifications: Experience with AWS or other cloud computing services. Experience with microservice architectures and related software methods including containerization and container orchestration. Familiarity with explainable AI, adversarial AI, active learning, and third wave approaches to AI. Familiarity with DevOps/DevSecOps/MLOps concepts. Familiarity with Linux-based operating systems. Demonstrated ability to work independently. Experience in working with LLMs (e.g. prompt engineering, LLM development frameworks, fine tuning, quantization) Experience in modeling and simulation. Experience with vector and/or graph databases Primary Level Salary Range: $121,400.00 - $182,000.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit *********************************** U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

The Opportunity: As a software engineer, you know that good software is more than just a nice-looking interface and data. You need the right combination of clean code, APIs, analytics, and infrastructure to develop a user-focused solution. We're looking for a software engineer like you to lead a team as they develop efficient and effective software, from vision to production-ready system, in an exciting, agile environment. As a seasoned software engineer at Booz Allen, you'll use the latest architectural approaches and open-source frameworks and tools to deliver complete end-to-end solutions to your clients. Using your software engineering expertise, you'll analyze the environment to ensure that your team's solutions consider the current architecture and operating environment, as well as future functionality and enhancements. You'll share your skills as your team utilizes new tools and techniques while helping to identify and implement system improvements. Work with us as we develop systems to create change for the better. Join us. The world can't wait. You Have: * 10+ years of experience designing, modifying, developing, writing, and implementing software programming applications using Agile methods, and in software development with basic programming languages, technologies, tools, or web development stacks * Experience with Python coding * Experience with containerization tools and techniques, using Docker, Kubernetes, ECS, or OpenShift * Experience with Agile development and utilizing GitLab processes * Experience writing source code for new applications or generating and enhancing code samples for existing applications * Experience in acquiring client requirements and resolving workflow problems through automation optimization * Experience mentoring or supervising employees within a collaborative, cross-functional team environment * Ability to work with automated testing tools to perform testing and maintenance * Active TS/SCI clearance; willingness to take a polygraph exam * Bachelor's degree and 10+ years of experience in Software Engineering, OR Master's degree and 6+ years of experience in Software Engineering Nice If You Have: * Experience with C++ * Knowledge of CI/CD pipelines using Jenkins, GitHub Actions, Git, or similar tools * Master's degree in CS, Computer Engineering, or a related Engineering field preferred; Doctorate degree in CS, Computer Engineering, or a related Engineering field a plus Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required. Compensation At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $86,800.00 to $198,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date. Identity Statement As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Work Model Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely. * If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility. * If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

The Opportunity: As a software engineer, you know that good software is more than just a nice-looking interface and data. You need the right combination of clean code, APIs, analytics, and infrastructure to develop a user-focused solution. We're looking for a software engineer like you to lead a team as they develop efficient and effective software, from vision to production-ready system, in an exciting, agile environment. As a seasoned software engineer at Booz Allen, you'll use the latest architectural approaches and open-source frameworks and tools to deliver complete end-to-end solutions to your clients. Using your software engineering expertise, you'll analyze the environment to ensure that your team's solutions consider the current architecture and operating environment, as well as future functionality and enhancements. You'll share your skills as your team utilizes new tools and techniques while helping to identify and implement system improvements. Work with us as we develop systems to create change for the better. Join us. The world can't wait. You Have: 10+ years of experience designing, modifying, developing, writing, and implementing software programming applications using Agile methods, and in software development with basic programming languages, technologies, tools, or web development stacks Experience with Python coding Experience with containerization tools and techniques, using Docker, Kubernetes, ECS, or OpenShift Experience with Agile development and utilizing GitLab processes Experience writing source code for new applications or generating and enhancing code samples for existing applications Experience in acquiring client requirements and resolving workflow problems through automation optimization Experience mentoring or supervising employees within a collaborative, cross-functional team environment Ability to work with automated testing tools to perform testing and maintenance Active TS/SCI clearance; willingness to take a polygraph exam Bachelor's degree and 10+ years of experience in Software Engineering, OR Master's degree and 6+ years of experience in Software Engineering Nice If You Have: Experience with C++ Knowledge of CI/CD pipelines using Jenkins, GitHub Actions, Git, or similar tools Master's degree in CS, Computer Engineering, or a related Engineering field preferred; Doctorate degree in CS, Computer Engineering, or a related Engineering field a plus Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required. Compensation At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $86,800.00 to $198,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date. Identity Statement As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Work Model Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely. If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility. If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

The Opportunity: As a software engineer, you know that good software is more than just a nice-looking interface and data. You need the right combination of clean code, APIs, analytics, and infrastructure to develop a user-focused solution. We're looking for a software engineer like you to lead a team as they develop efficient and effective software, from vision to production-ready system, in an exciting, agile environment. As a seasoned software engineer at Booz Allen, you'll use the latest architectural approaches and open-source frameworks and tools to deliver complete end-to-end solutions to your clients. Using your software engineering expertise, you'll analyze the environment to ensure that your team's solutions consider the current architecture and operating environment, as well as future functionality and enhancements. You'll share your skills as your team utilizes new tools and techniques while helping to identify and implement system improvements. Work with us as we develop systems to create change for the better. Join us. The world can't wait. You Have: 10+ years of experience designing, modifying, developing, writing, and implementing software programming applications using Agile methods 10+ years of experience in software development with basic programming languages, technologies, tools, or web development stacks Experience with Python coding Experience with Agile methodology, extreme programming, software engineering, product management, and software products Experience writing source code for new applications or generating and enhancing code samples for existing applications Experience acquiring client requirements and resolving workflow problems through automation optimization Experience mentoring or supervising employees within a collaborative, cross-functional team environment Ability to work with automated testing tools to perform testing and maintenance TS/SCI clearance with a polygraph Bachelor's degree in CS, Computer Engineering, or an engineering field Nice If You Have: Experience with containerization tools and techniques Knowledge of CI/CD pipelines using Jenkins, GitHub Actions, Git, or similar tools Master's degree in CS, Computer Engineering, or a related Engineering field preferred; Doctorate degree in CS, Computer Engineering, or a related Engineering field a plus Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance with polygraph is required. Compensation At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $112,800.00 to $257,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date. Identity Statement As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud. Work Model Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely. If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility. If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.