Senior software engineer jobs in University City, MO - 784 jobs
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1904Labs 4.2
Senior software engineer job in Saint Louis, MO
About Us
At Turnberry Labs (formerly 1904labs), we are a human-centered technology company that focuses on using modern tools and technologies to solve enterprise organizations' crunchiest challenges. We look for innovative, courageous, intensely curious, and team-minded people. At Turnberry Labs, we are committed to providing each team member with opportunities that will allow personal and professional growth.
The Role
As a SoftwareEngineer, you will be responsible for the Analysis, Design, and Development of modern application software. Each team member is expected to have the right attitude and aptitude required to embrace new technologies as necessitated by the problems we encounter. We seek "T-shaped" developers, deep in a few core areas and broad across a wide range of systems, programming, and computer science disciplines. That said, we strive to build complementary teams that leverage your core strengths while also providing opportunities for growth in a collaborative setting.
Requirements
Proficient understanding of Object-Oriented Programming and best practices for developing robust solutions as well as experience using standard Design Patterns to solve common problems.
Must be adaptable and have the drive to learn new technologies and frameworks to support R&D interests
Experience with relational and/or document-based data stores. E.g. (Postgres, MySQL, and/or MongoDB, DynamoDB, elastic) in a professional environment
Experience with one or more of the following frameworks or server-side technologies. E.g. (Node, React, Angular, Vue.js, etc)
Experience working with distributed architectures including SOA-based solutions and/or micro-services implementations.
Familiarity with consuming from and standing up REST-based APIs
Deep understanding of how to build, deploy, test, run and manage full-stack, cloud-native applications.
Desired Skills
Java backend development and/or Spring boot framework experience.
JavaScript "single page" web frameworks as well as a deep understanding of utilizing JSON-based services.
Experience with JavaScript build tools (webpack, r.js, grunt, bower, etc.)
Previous work experience in an Agile team-oriented environment.
Experience with code quality tools (e.g. eslint, jshint, pmd) as well as integration into a build process.
Full scope test automation from unit to behavioral/functional to integration (e.g JUnit, ScalaTest, JBehave, Cucumber). Experience integrating these frameworks into a continuous integration environment.
Experience with any of the big three IAAS platforms: AWS / GCP / Azure
Experience with infrastructure management platforms: Kubernetes, Cloud Foundry, etc.
Experience with various analytics tools used for working with big data
Why Choose Turnberry Labs?
Development Time - 10% of our work week is set aside to work on our own ideas and projects. We believe that giving folks the time and space to innovate and tinker allows them to bring fresh ideas and perspectives to the work we do.
Competitive salary, bonus, and benefits (medical, dental, paid parental leave, 401k match).
We invest in the personal and professional growth of every employee because we believe growth leads to innovative solutions and personal fulfillment.
Career paths are crafted by you and supported and nurtured by Turnberry Labs.
Experienced team made up of intensely curious and innovative thinkers from a variety of disciplines who inspire each other to come up with the best solutions possible.
Being a trusted advisor to our clients allows us to affect change within their organizations.
We work to create an intentional culture crafted around promoting and supporting the needs of our employees as whole people.
Flexible schedules and a Human-Centered approach to work.
Strong commitment to the community. Take advantage of the relationships we've built with our established community partners or pursue any other community endeavor you are passionate about.
The offered salary will be dependent upon experience
At Turnberry, inclusion is one of our core values. We are committed to creating a positive and connected work environment for all and are fully invested in and focused on hiring and growing a diverse team of high performers. We believe that uniqueness in ideas, experiences, and backgrounds makes us a better Turnberry: Turnberry is an Equal Employment Opportunity employer, and recruits, employs, trains, compensates, and promotes regardless of age, ancestry, family medical or genetic information, gender identity and expression, marital, military, or veteran status; national and ethnic origin; physical or mental disability; political affiliation; pregnancy; race; religion; sex; sexual orientation; and any other protected characteristics.
Americans with Disabilities Act (ADA)
Turnberry will provide reasonable accommodation with our application process upon request as required to comply with applicable laws. If you have a disability and require accommodation
assistance in this application process, please send an email to our Human Resources department.
$60k-80k yearly est. 20h ago
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Lead Application Developer
Cass Information Systems 3.7
Senior software engineer job in Bridgeton, MO
Lead Application Developer is responsible for developing and implementing application changes and is expected to stay abreast of the available technology regarding application development, information delivery, and relational database technology, as well as lead assigned team of developers.
PRINCIPAL RESPONSIBILITIES AND DUTIES:
Maintains in-depth knowledge of the department's strategic business plans.
Develops in-depth knowledge of company's existing IT architecture, infrastructure, and technology portfolio.
Provides technical leadership and mentors team members on assigned projects.
Conducts research on emerging technologies in support of infrastructure development efforts and recommend technologies that will increase cost effectiveness and infrastructure flexibility.
Designs, develops, and implements end-to-end integrated systems.
Collaborates across teams to evaluate business needs and provide technology solutions.
Develops and executes test plans to check infrastructure and systems technical performance.
Reports on findings and make recommendations for improvement.
Conducts code reviews and uphold Cass standards in coding.
KNOWLEDGE AND MINIMUM REQUIREMENTS:
Advanced understanding of information processing principles and practices.
Advanced technical knowledge of network, PC, and platform operating systems, including current MS Windows Server and Desktop releases.
Strong experience in a variety of programming languages, including C# and ASP.
Knowledge of current web best practices and JavaScript, HTML, and CSS experience.
Knowledge of the web application framework Angular 1.x and Angular 7 preferred including TypeScript.
Experience using TFS or DevOps with GIT integrated for source control.
Knowledge of applicable data privacy practices and laws.
Advanced analytical, conceptual, and problem-solving abilities.
Excellent written, oral and interpersonal communication skills.
Ability to present ideas in user-friendly language.
Effectively able to prioritize and execute tasks in a fast paced environment.
Ability to thrive in a team-oriented, collaborative setting.
Experience with agile methodologies and the full software development life cycle.
A bachelor's degree in the field of computer science, information systems, or computer engineering or equivalent experience.
5+ years of experience working as a developer.
5+ years of experience with business requirements gathering and analysis.
Proven experience in internet-based systems development.
3+ years of hands on experience with application development tools, including Visual Studio.
3+ years of hands-on experience with relational database technology, preferably Microsoft SQL Server.
3+ years of web development experience, preferably using the Microsoft Stack or Angular.
APPLICATION PROCESS:
You can directly apply through Cass's website at careers. Please apply directly to this position via the "Apply" button. You will be required to create an account and provide your resume, contact information and other pertinent employment information. This process typically takes 20 minutes or less. Should we find that you meet the minimum requirement of the position, a member of our recruiting team will be in touch to start the interview process.
ABOUT OUR COMPANY:
Cass Information Systems, Inc. is a leading provider of integrated information and payment management solutions. Cass enables enterprises to achieve visibility, control and efficiency in their supply chains, facilities and other operations. Disbursing over $90 billion annually on behalf of clients, and with total assets of $2.3 billion, Cass is uniquely supported by Cass Commercial Bank. Founded in 1906 and a wholly owned subsidiary, Cass Commercial Bank provides sophisticated financial exchange services to the parent organization and its clients. Cass is part of the Russell 2000. More information is available at *****************
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.
$99k-117k yearly est. 3d ago
Data Engineer
Zillion Technologies, Inc. 3.9
Senior software engineer job in Saint Louis, MO
We're seeking an experienced Data Engineer to help design and build a cloud-native big data analytics platform on AWS. You'll work in an agile engineering team alongside data scientists and engineers to develop scalable data pipelines, analytics, and visualization capabilities.
Key Highlights:
Build and enhance data pipelines and analytics using Python, R, and AWS services (Glue, Lambda, Redshift, EMR, QuickSight, SageMaker)
Design and support big data solutions leveraging Spark, Hadoop, and Redshift
Apply DevOps and Infrastructure as Code practices (Terraform, Ansible, AWS CDK)
Collaborate cross-functionally to align data architecture with business goals
Support security, quality, and operational excellence initiatives
Requirements:
7+ years of data engineering experience
Strong AWS cloud and big data background
Experience with containerization (EKS/ECR), APIs, and Linux
Location: Hybrid in St. Louis, MO area (onsite 2-3 days)
$71k-97k yearly est. 2d ago
Data Engineer, Data Management
NISA Investment Advisors, LLC
Senior software engineer job in Clayton, MO
NISA Investment Advisors, LLC (NISA) offers customized investment solutions for tax-exempt and taxable institutional clients. NISA manages over $298 billion in fixed-income and equity securities and over $172 billion in derivative notional value. We seek bright, motivated individuals who can contribute to our growing team of professionals. Candidates with a high degree of independent thinking, strong analytical and quantitative skills, and team-playing abilities who desire to make a difference are encouraged to apply.
Responsibilities
The Data Engineer, Data Solutions is a member of NISA's Data Engineering team responsible for creating, updating and supporting ETL/ELT data pipelines for a variety of stakeholders across the enterprise. They will define, design, develop, unit test and support new and existing solutions to meet complicated and time-sensitive business requirements. In addition, the Data Engineer supports and manages high-severity production incident resolution, performs code reviews, and participates in on-call rotations. They should be comfortable working in a fast-paced team environment and have the skills to troubleshoot and resolve data integration issues independently.
Qualifications
Bachelor's degree in Computer Science or a related field or relevant work experience required
5+ years of experience with ETL/ELT
3+ years of experience with SQL
Experience with Python, C#, or similar high-level language
Experience with AWS, AWS Lambda, S3, Airflow, and related technologies
Professional work experience with Databricks or PySpark
Demonstrated team player who works well in a fast-paced environment and can adapt to changing priorities, demands, and timelines
Strong analytical and innovative problem-solving skills, along with a solid attention to detail.
Excellent customer support skills
Preferred Experience:
Microsoft SQL Server database development
PostgreSQL database development
SSIS development
Working knowledge of Airflow or a similar business automation tool
Developing software/databases in an Agile environment
NISA's culture encourages collaboration and innovation. We seek self-motivated, intellectually curious individuals willing to push themselves and others in an environment that celebrates fresh thinking. We equip employees with the resources needed to excel and we encourage personal development. NISA is dedicated to internally cultivating and rewarding talent. Employees at NISA are provided with a wide range of benefits, including a complimentary onsite cafeteria, gym, health and wellness program, and educational assistance program.
NISA is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.
$72k-97k yearly est. 20h ago
AWS Cloud Engineer/Architect
Slalom 4.6
Senior software engineer job in Saint Louis, MO
Who You'll Work With As a modern technology company, our Slalom Technologists are disrupting the market and bringing to life the art of the possible for our clients. We have a passion for building strategies, solutions, and creative products to help our clients solve their most complex and interesting business problems. We surround our technologists with interesting challenges, innovative minds, and emerging technologies.
We are looking for skilled AWS Cloud Engineers and Architects with expertise in workload migrations and operational experience to join our team. The ideal candidate will be responsible for designing, deploying, and managing scalable cloud infrastructure, ensuring high availability, security, and efficiency. You will play a key role in automating cloud deployments, optimizing performance, and troubleshooting infrastructure-related issues.
At Slalom, we invest heavily in our partnership with AWS and at AWS re:Invent 2025, we were honored with four AWS Partner of the Year awards. These included Industry Partner of the Year for both Retail & Consumer Packaged Goods and Travel & Hospitality (Consulting - Global), as well as State or Local Government Consulting Partner of the Year and Non-Profit Organization (NPO) Consulting Partner of the Year.
What You'll Do
* Infrastructure as Code (IaC): Design, implement, and maintain AWS infrastructure using Terraform.
* Cloud Operations: Monitor, troubleshoot, and optimize cloud environments for performance, security, and cost efficiency.
* Automation & CI/CD: Develop automation scripts and pipelines using tools like Terraform, Ansible, AWS CDK, or GitHub Actions.
* Security & Compliance: Capable of implementing best practices for security, identity management, and compliance (IAM, VPC, encryption, logging).
* Observability & Monitoring: Set up and maintain monitoring, logging, and alerting solutions (CloudWatch, Prometheus, Grafana).
* Incident Management: Respond to and resolve production incidents, ensuring minimal downtime and fast recovery.
* Collaboration: Work closely with developers, DevOps teams, and security teams to support cloud-based applications.
* Documentation: Maintain clear and up-to-date documentation for cloud infrastructure and automation processes.
What You'll Bring
* 5+ years of hands-on experience with AWS services (EC2, S3, Lambda, RDS, VPC, CloudWatch, SSM, SSO, etc.).
* Strong experience with Terraform for infrastructure automation.
* Experience with cloud operations, monitoring, and incident response.
* Familiarity with Linux systems administration and scripting (Bash, Python, or PowerShell).
* Strong knowledge of networking concepts (VPC, VPN, DNS, Load Balancing, Security Groups).
* Experience with CI/CD pipelines and automation tools.
* Strong problem-solving skills and ability to work in a fast-paced environment.
* Good communication skills and ability to collaborate with cross-functional teams.
Nice to have
* Experience with one of the following: Python, PowerShell, Bash, Go, Rust.
* Experience with AWS MGN, DRS, Migration Factory.
* AWS certifications (AWS Certified Solutions Architect, AWS Certified DevOps Engineer, etc.).
* Experience with Kubernetes (EKS), Docker, or other container orchestration tools.
* Experience with RDS, Managed MSSQL, PostgreSQL.
About Us
Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always. From strategy through delivery, our agile teams across 52 offices in 12 countries collaborate with clients to bring powerful customer experiences, innovative ways of working, and new products and services to life. We are trusted by leaders across the Global 1000, many successful enterprise and mid-market companies, and 500+ public sector organizations to improve operations, drive growth, and create value. At Slalom, we believe that together, we can move faster, dream bigger, and build better tomorrows for all.
Compensation and Benefits
Slalom prides itself on helping team members thrive in their work and life. As a result, Slalom is proud to invest in benefits that include meaningful time off and paid holidays, parental leave, 401(k) with a match, a range of choices for highly subsidized health, dental, & vision coverage, adoption and fertility assistance, and short/long-term disability. We also offer yearly $350 reimbursement account for any well-being-related expenses, as well as discounted home, auto, and pet insurance.
Slalom is committed to fair and equitable compensation practices. For this position, the target base salary pay range in the following locations: Boston, Houston, Los Angeles, Orange County, Seattle, San Diego, Washington DC, New York, New Jersey, for Consultant level is $119,000-$147,500 and for Senior Consultant level it is $136,500-$169,500 and for Principal level it is $151,000-$187,500.
In all other markets, the target base salary pay range for Consultant level is $109,000-$135,500 and for Senior Consultant level it is $125,000-$155,500 and for Principal level it is $138,500-$172,000.
In addition, individuals may be eligible for an annual discretionary bonus. Actual compensation will depend upon an individual's skills, experience, qualifications, location, and other relevant factors. The salary pay range is subject to change and may be modified at any time.
We will accept applications until 3/31/2026 or until the positions are filled.
We are committed to pay transparency and compliance with applicable laws. If you have questions or concerns about the pay range or other compensation information in this posting, please contact us at: ********************.
EEO and Accommodations
Slalom is an equal opportunity employer and is committed to attracting, developing and retaining highly qualified talent who empower our innovative teams through unique perspectives and experiences. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veterans' status, or any other characteristic protected by federal, state, or local laws. Slalom will also consider qualified applications with criminal histories, consistent with legal requirements. Slalom welcomes and encourages applications from individuals with disabilities. Reasonable accommodations are available for candidates during all aspects of the selection process. Please advise the talent acquisition team or contact ****************************** if you require accommodations during the interview process.
$151k-187.5k yearly Easy Apply 1d ago
Associate Software Developer
Blitt and Gaines PC 3.6
Senior software engineer job in Saint Louis, MO
Job Title: Associate Software Developer
As an associate software developer, you will be working with Blitt and Gaines, P.C.'s product development team, building and testing automation applications utilizing SQL, C#, Python and Power BI. This role will also continually review the historical and on-going accuracy and integrity of the data and reports generated from our systems.
This is an experienced level position with opportunity for potential advancement into further development roles within the firm. You will report to the Director of Development and work to build a variety of types of applications for our firm.
Key Responsibilities:
· Assist in the design and development of stored procedures and database queries to generate data for reports and dashboards.
· Support the development of automation tools and backend processes using C# or Python.
· Help build and maintain web services and APIs for internal and external applications.
· Collaborate with senior developers and analysts to understand business needs and deliver effective technical solutions.
· Participate in source control workflows using Git and project tracking through Azure DevOps.
· Contribute to the maintenance and evolution of CI/CD pipelines, including testing, builds, and deployment steps.
· Perform basic debugging and troubleshooting under the guidance of senior team members.
· Participate in code reviews, team meetings, and agile ceremonies.
Minimum Requirements:
· 1-2 years of experience with C# or Python in a professional or internship setting.
· Basic experience writing and maintaining SQL queries or stored procedures.
· Familiarity with REST APIs and how to interact with them.
· Exposure to Azure DevOps, Git, or similar tools for version control and project management.
· Basic understanding of CI/CD pipelines and software development best practices.
· Strong willingness to learn, take feedback, and grow technical skills.
· Good communication and teamwork skills.
Preferred Qualifications:
· Coursework or hands-on experience with web service development or automation scripting.
· Exposure to Azure cloud services or other cloud platforms (AWS, GCP).
· Familiarity with reporting or BI tools such as Power BI or SSRS.
· Understanding of agile development and software delivery practices.
Nice to Haves:
· Familiarity with Collection Master software
· Experience in the litigation or collections industry
· Experience with generating AI prompts and implementing AI solutions
· React or other front-end web languages
Benefits:
Blitt and Gaines, P.C. offers PTO, Paid Holidays, Medical Benefits, Competitive Salary and 401k and profit sharing plans! Medical Benefits include - Medical, Dental, Vision, Life Insurance and Short Term Disability.
$67k-86k yearly est. 38d ago
Software Engineering Co-Op
Watlow Controls 4.6
Senior software engineer job in Saint Louis, MO
About the Role Join Watlow's Systems Engineering team and help shape the future of our Digital Twin and Manufacturing Automation initiatives. This co-op blends softwareengineering, data systems, and shop-floor integration to improve how we collect data, automate workflows, and visualize processes across global operations.
You'll collaborate with engineers, operators, and IT specialists to design Python-based solutions that make our manufacturing systems smarter, faster, and more connected.
Key Responsibilities
Develop Python-based web apps to capture and visualize shop-floor data in Azure cloud databases.
Build and maintain data pipelines to Databricks for trend and performance analysis.
Design Raspberry Pi + camera systems for part tracking and operator assistance.
Replace legacy automation (e.g., auto-clickers) with robust Python automation and APIs.
Integrate shop-floor data with company-wide digital systems and dashboards.
Write clean, documented code and create user-friendly interfaces for operators and engineers.
Desired Skills
Proficient in Python (object-oriented programming, automation, data handling).
Familiar with Flask, FastAPI, or Django for web development.
Basic knowledge of databases (SQL/NoSQL) and Azure or other cloud services
Basic knowledge of pulling and pushing data through APIs.
Experience with OpenCV, Raspberry Pi, or sensor integration is a plus.
Interest in machine learning or identifying automation patterns in manufacturing data.
Strong communication skills and willingness to work in a hands-on, cross-functional environment.
Preferred Majors
Computer Engineering
Computer Science
Electrical Engineering
Mechanical Engineering (with Python programming experience)
Biomedical Engineering (with Python/Image processing)
Industrial & Systems Engineering
Mechatronics/Robotics Engineering
Information Systems/IT or related STEM fields
What You'll Gain
Real-world experience applying software to manufacturing and digital transformation.
Exposure to hardware/software integration and automation.
Collaboration with cross-functional teams in engineering, IT, and operations.
The chance to see your code implemented directly on the shop floor to drive measurable impact.
Applicants must be authorized to work for any employer now or in the future in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.
$68k-88k yearly est. 60d+ ago
Software Engineer II
Mastercard 4.7
Senior software engineer job in OFallon, MO
Our Purpose
Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
Title and Summary
SoftwareEngineer IIOverview:
Mastercard's Decision Management Platform team is seeking a Software Developer II to design, develop, and deliver scalable, secure, and high-quality software solutions. In this role, you will contribute to the full software development lifecycle, from analysis and design to implementation and ongoing support, while collaborating with cross-functional teams to meet evolving business needs.
You will play a vital role in a rapidly growing organization, working closely with experienced and driven engineers to solve complex challenges.
Engineers work in small, flexible teams, with every member contributing to the design, development, and testing of features. We follow an Agile approach to software development and practice continuous integration and delivery.
This is a hybrid position based in O'Fallon, MO requiring three days per week onsite.
Role:
• Design, develop, test, implement, and maintain software applications that align with Mastercard engineering standards and best practices.
• Deliver secure, reliable, and scalable software solutions within defined timelines and budgets.
• Research and evaluate alternative technical approaches to meet current and future business needs.
• Conduct feasibility studies, system flowcharting, and logic design to support solution development.
• Collaborate with team members and stakeholders to meet project goals, identify issues early, and recommend practical solutions.
• Independently manage assigned tasks and participate in production incident management and on-call rotations.
• Create and maintain comprehensive technical documentation in line with Mastercard's quality and governance standards.
• Assist seniorengineers in updating documentation and templates to align with evolving project and technology needs.
• Contribute to process improvement initiatives and promote best practices in software development and delivery.
• Support the collection, analysis, and reporting of software and project performance metrics.
All About You:
• Proven experience in softwareengineering, architecture, or development.
• Strong hands-on experience in Java (Java 17 preferred) for developing scalable and high-performance applications.
• Familiarity with CI/CD tools such as Jenkins and Git.
• Working knowledge of cloud platforms (AWS preferred).
• Hands-on experience with containerization technologies (e.g., Docker).
• Experience developing with web technologies such as HTML, JavaScript, and frameworks like Angular or React.
• Solid understanding of database technologies, including both SQL and NoSQL systems.
• Experience developing and integrating RESTful APIs and working within microservices architectures.
• Strong grasp of object-oriented programming, software design patterns, and system performance optimization.
• Proficient in algorithms, data structures, and distributed systems concepts.
• Experience in Agile environments (e.g., Scrum or Kanban) with continuous integration and iterative delivery models.
• Passionate about solving complex, real-world challenges through technology.
• Self-motivated and proactive, with the ability to take ownership and deliver results in fast-paced, collaborative settings.
• Excellent verbal and written communication skills, capable of explaining complex technical concepts to diverse audiences.
• Bachelor degree in Computer Science, SoftwareEngineering, Information Technology, Mathematics, or a related field. Equivalent practical experience may also be considered.
This role is not eligible for Mastercard's work authorization sponsorship. As such, candidates must be eligible to work in the United States, now as well as in the future, without employer sponsorship.
#LI-NF1
#AI3Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.
Corporate Security Responsibility
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:
Abide by Mastercard's security policies and practices;
Ensure the confidentiality and integrity of the information being accessed;
Report any suspected information security violation or breach, and
Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.
In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.
Pay Ranges
O'Fallon, Missouri: $92,000 - $147,000 USD
$92k-147k yearly Auto-Apply 41d ago
Back End Software Engineer (TS Clearance Required)
North Point Technology 3.9
Senior software engineer job in Saint Louis, MO
Job Description
North Point Technology's FS2 Aero team seeks an experienced Backend Support Software Developer to enhance existing code and integrate solutions for the Aeronautical Navigation Office. The ideal candidate has strong software development expertise and coding skills across diverse tools and projects. You will collaborate with our teams to resolve complex technical issues, support incident response, and drive continual system improvements.
Program core hours are 9am-3pm ET. Evening or weekend work can be required (approx. 2 times a month but can vary by mission requirements). When required, schedule changes will be arranged.
This program requires employees to have an active TS clearance
Responsibilities:
This role supports the development of innovative systems for analytics, exploitation, production, and dissemination using web, remote desktop, and cloud technologies. Candidates should have 3+ years of Python and C#/Java framework experience, 4+ years with unit testing, CI tools, and GitLab, and expertise in cloud/SOA/web services or virtualization. The role also requires the ability to plan and prioritize in Confluence/Jira environments and communicate ideas clearly across diverse audiences.
Required Skills/Experience:
Requires a BS in Information Systems, Information Technology, Computer Science or closely related discipline and 4+ years of prior relevant experience or Masters with 2+ years of prior relevant experience; OR 4 years of experience in lieu of degree
Must possess an active Top Secret Security Clearance with ability to obtain SCI post hire
DoD 8570 compliance
Troubleshoot and resolve complex backend issues involving REST APIs, databases, and applications.
Proficient in C#/Java with working knowledge of JavaScript/TypeScript.
Develop and document functionality in GitLab repositories, applying DevOps practices to deliver features within an Agile framework.
Contribute to Agile ceremonies (standups, sprint planning, increment planning) and support iterative testing using Atlassian tools (Jira/Confluence).
Apply cloud computing expertise to administer systems, modify GOTS code, and integrate open-source solutions into web applications. Responsibilities include API development, database integration, and enabling interaction with Redux/React frameworks for visualization and data filtering, with best practices in unit and build testing.
Collaborate with team members to review tickets, ensure proper testing, and deliver functionality aligned with User Story Acceptance Criteria.
Preferred Skills/Experience
Linux and/or Windows system administration
DoD Aeronautical Datasets
AWS cloud formation templates
Node, NPM, Swashbuckle, REST API, Sass
C# Developer, DevOps certification
Team Collaboration tools (Jira, Confluence)
Qualifications
Must possess an active Top Secret Security Clearance
BS in Information Systems, Computer Science of closely related discipline and 8+ years of prior relevant experience or Masters with 6+ years of prior relevant experience.
North Point Technology is THE BEST place to work for curious-minded engineers motivated to support our country's most crucial missions! We focus on long term projects, leveraging the latest technology in support of innovative solutions to solve our customer's most difficult problems.
At North Point Technology, EMPLOYEES come first! We value our employees by providing excellent compensation, benefits, and a flexible work-life balance. We strive for a close-knit and open atmosphere where the owners are always directly available to our team members.
Come join us! Apply with North Point Technology today!
For positions requiring a federal security clearance, your clearance level must be clearly identified on your resume.
$60k-80k yearly est. 4d ago
Java Software Engineer
Pangaea 4.2
Senior software engineer job in Saint Louis, MO
We are currently in search of an experienced SoftwareEngineer with a degree in Computer Science and 5+ years' experience developing JavaFX and\/or Swing applications. The successful candidate will work to develop and maintain several Java applications that interact with hardware by way of interfaces to firmware developed in\-house. Knowledge of RFID (Radio Frequency Identification) technology would be beneficial, but is not required. Must be comfortable working in a fast\-paced startup environment, and be able to take initiative in providing solutions to problems as they arise. This is an exciting opportunity to be part of startup that is revolutionizing the way that RFID is used!
Responsibilities:
\-Develop and implement new software programs
\-Maintain and improve the performance of existing software
\-Clearly and regularly communicate with management and technical support colleagues
\-Design and update software databases
\-Test and maintain software products to ensure strong functionality and optimization
\-Recommend improvements to existing software programs as necessary
Qualifications:
\-Bachelor's Degree in Computer Science
\-5+ years' experience in web and software development using Java
\-Demonstrated knowledge of web technologies, such as HTML, CSS and JavaScript
\-Ability to work independently and multi\-task effectively
\-Demonstrated understanding of projects from the perspective of both client and business
\-Flexible and willing to accept a change in priorities as necessary
\-Strong attention to detail
Required skills: Desired skills:
• \-Java • \-Regular Expressions
• \-JavaFX or Swing • \-MongoDB
• \-MySQL • \-Excel
• \-Hibernate • \-Visual Basic
• \-JSON • \-Spring
• \-Javascript\/CSS\/HTML • \-Thymeleaf
• \-Windows OS • \-SCPI
• \-TCP\/IP, DNS, Sockets • \-Inno Setup
• \-Multithreading • \-PHP
• \-Linux OS
• \-Bash scripting
• \-OpenSSL
Requirements
Qualifications:
\-Bachelor's Degree in Computer Science
\-5+ years' experience in web and software development using Java
\-Demonstrated knowledge of web technologies, such as HTML, CSS and JavaScript
\-Ability to work independently and multi\-task effectively
\-Demonstrated understanding of projects from the perspective of both client and business
\-Flexible and willing to accept a change in priorities as necessary
\-Strong attention to detail
Required skills: Desired skills:
• \-Java • \-Regular Expressions
• \-JavaFX or Swing • \-MongoDB
• \-MySQL • \-Excel
• \-Hibernate • \-Visual Basic
• \-JSON • \-Spring
• \-Javascript\/CSS\/HTML • \-Thymeleaf
• \-Windows OS • \-SCPI
• \-TCP\/IP, DNS, Sockets • \-Inno Setup
• \-Multithreading • \-PHP
• \-Linux OS
• \-Bash scripting
• \-OpenSSL
Benefits Excellent Benefits Package
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•\-Demonstrated understanding of projects from the perspective of both client and business
•\-Flexible and willing to accept a change in priorities as necessary
•\-Strong attention to detail
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• \-JavaFX or Swing • \-MongoDB
• \-MySQL • \-Excel
• \-Hibernate • \-Visual Basic
• \-JSON • \-Spring
• \-Javascript\/CSS\/HTML • \-Thymeleaf
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• \-Multithreading • \-PHP
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$60k-80k yearly est. 60d+ ago
Mid Software Engineer
Momentum 4.6
Senior software engineer job in Saint Louis, MO
Welcome to the
MOMENTUM.
Team!
MOMENTUM.
is not just our company name; it is the highest value we deliver to our customers. We are a rapidly growing technology solutions company delivering innovative technology, engineering, and intelligence solutions across the DoD sector. The efforts of our high-capacity team ultimately strengthen our Nation and the warfighter.
Our team is dispersed throughout the US, which means we value the diversity and unique collaboration fostered throughout our team. We work incredibly hard for our customers and believe deeply in our core values. We're a high-energy, high-growth team and we love to win.
Mid SoftwareEngineer
MOMENTUM.
is seeking a Mid SoftwareEngineer to join our team in St. Louis, MO, supporting a mission-critical geospatial application. This role requires strong full-stack Python experience, with a focus on API development, Kubernetes deployment, and modern DevOps practices to accelerate delivery. The engineer will work with an existing code baselearning it quickly, manipulating it for adjacent use cases, and implementing new features that advance mission capabilities. A background in geospatial systems, imagery acquisition, and geometry is a significant plus. Candidates must be passionate about modern architectures, able to adapt quickly to existing systems, and excited to tackle challenging technical problems for our mission users.
In this role, you will:
Strong full-stack Python development experience
Experience building and maintaining APIs (ex. FastAPI)
Experience with Kubernetes and DevOps practices to support rapid deployment and sustainment.
Proven ability to work with pre-existing code bases, understand them quickly, and adapt functionality for new use cases.
Experience with web services architecture, design, and development.
Background working in secure cloud environments (e.g., AWS GovCloud, C2S).
Understanding of geospatial systems, including imagery acquisition, geometry, and related workflows.
Familiarity with geospatial data tools and libraries (e.g., PostGIS, ArcGIS, GDAL).
Prior exposure to DoD/IC mission applications.
If you're right for this role, you have:
Active Top-Secret Clearance with the ability to obtain an SCI
BS or equivalent in Computer Science, Engineering, Mathematics, Information Systems, or equivalent technical degree.
5+ years with a Bachelor's degree in a technical field, or 3+ years with a Master's in a technical field
To learn more about us, check out our website at ********************
MOMENTUM.
is an EEO/M/F/Veteran/Disabled Employer:
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.
To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The qualifications listed above are representative of the knowledge, skill, and ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.
Accommodations:
Consistent with the Americans with Disabilities Act (ADA) and Alabama civil rights law, it is the policy of
MOMENTUM.
to provide reasonable accommodation when requested by a qualified applicant or employee with a disability, unless such accommodation would cause an undue hardship. The policy regarding requests for reasonable accommodation applies to all aspects of employment, including the application process. If reasonable accommodation is needed, please include a request when applying.
$63k-88k yearly est. 19d ago
Mid-level Software Engineer
DLS Engineering 3.9
Senior software engineer job in Saint Louis, MO
Mid-level SoftwareEngineer at DLS Engineering (on-site)
DLS Engineering is seeking a Mid-level SoftwareEngineer for a full-time position supporting a geospatial customer in St. Louis, Missouri. This is an on-site position.
Why this role is a great next step for your career:
This position supports an exciting modernization initiative providing enterprise architectural, engineering, operations and sustainment, modification, and testing of geospatial-intelligence core services. This utilizes secure cloud environments, and a modern agile development methodology making data accessible, discoverable, and deliverable.
St. Louis offers a low cost of living, vibrant cultural scene, and abundance of free attractions and outdoor spaces. It offers a mix of big-city amenities and smaller-town charm, with unique neighborhoods, diverse food options, professional sports teams, and a growing technology sector.
A day in the life:
Creating, maintaining, and/or improving the performance of existing software code, with duties to write and update software code and databases under direction from the assigned Government Lead.
When I read the below it sounds like me:
Domain knowledge and hands-on experience in developing and implementing software programs.
Proven ability writing test scripts, test driven development, in an agile software development environment, where building in automated test procedures in addition to functional code are paramount to continuous integration and continuous delivery of software.
Clear communication skills
Required Security Clearance: Top Secret/SCI
Required: United States Citizenship
Required Education/Experience:
A Master of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems, Cybersecurity, or equivalent technical degree and a minimum of 2 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work.
OR, a Bachelor of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems or equivalent technical degree and a minimum of 4 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, or engineering/development.
OR, a minimum, as equivalent to education, of 6 years of experience in softwareengineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work may be substituted for a technical degree.
Required technical skills in at least two of the following:
Java, JavaScript, or Python enterprise application development
Web services architecture, design, and development
Relational database design
Other information:
We offer a competitive salary and a 401k program with company match.
We offer a comprehensive benefits package including health, vision, dental, life, and disability insurance.
We offer a generous paid time off package
If accommodation is needed with the application and / or the interview process for applicants with disabilities, please contact Human Resources at ************.
DLS is an E-Verify company.
DLS is an equal employment opportunity employer. Qualified applicants will receive consideration without regard to age, race, religion, sex (pregnancy, sexual orientation, gender identity), national origin, or disability. We encourage all qualified applicants to apply. If you believe you have been discriminated against, please contact Barbara Ellison. You also have the right to file a charge of discrimination with the equal employment opportunity commission.
Must be able pass a government background check, which will be completed before employment.
$60k-80k yearly est. 9d ago
Software Engineer
CDIT
Senior software engineer job in Scott Air Force Base, IL
Develops, runs tests, and maintains current computer programs that provide instructions computers must follow to perform their functions. Updates, repairs, modifies, and expands existing computer programs. Supports a non -complex degree of structured analysis, impact and compatibility analysis, cost analysis, computer capability analysis, feasibility studies, and user/customer interface.
Requirements
Secret Clearance
Bachelors degree
Experience depending upon Job Level
Junior - 0 -3 years
Intermediate - 3 -8 years
Senior - 8 -11 years
Subject Matter Expert - 12+ years
$63k-85k yearly est. 4d ago
Software Quality Engineer- PIM (Product Information Management)
Insight Global
Senior software engineer job in Sunset Hills, MO
We are seeking a Software Quality Engineer with strong systems thinking and product data domain expertise to join a Product Information Management (PIM) scrum team. This team owns how product information flows from upstream systems into PIM, through product APIs and feeds, and out to marketplaces, commerce sites, and analytics platforms.
In this role, you'll focus on end-to-end and integration testing across multiple applications. You will validate new attributes, rules, and mappings; verify marketplace feeds and API payloads; and ensure product data is accurate, complete, and compliant across regions. You'll collaborate closely with developers, product owners, analysts, vendors and integration partners to design test strategies that cover complex data flows and business rules. If you have experience with e-commerce product catalogs, PIM systems, or marketplace integrations-and enjoy digging into data, APIs, and cross-system behavior-this is an opportunity to shape quality for a critical part of this company's ecosystem. This position is Hybrid in STL. This compensation is based on years of experience and ranges between $35-$40/hr.
We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to ********************.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: ****************************************************
Skills and Requirements
- 3+ years of experience in software quality engineering or system/integration testing, preferably within e-commerce, retail, or product information domains.
- Hands-on experience testing data-intensive systems such as PIM, product catalog, merchandising, or marketplace/feed integrations.
- Strong systems thinking skills, with a proven ability to model and reason about workflows that span multiple applications, services, and data stores.
- Proficiency with API testing tools (e.g., Postman, REST clients) and comfort working with JSON/XML payloads, API documentation, and contract/functional testing.
- Solid data literacy: ability to work with SQL and/or scripting (e.g., Python or similar) to inspect, compare, and validate datasets, exported files, and transformations.
- Experience validating file-based integrations (e.g., CSV, XML, JSON over SFTP), including structure, content, schedules, and error handling.
- Strong understanding of functional, integration, and end-to-end testing practices, with an emphasis on non-UI testing and data correctness. - Azure
- SFCC
$35-40 hourly 7d ago
Lead Applications/Java Developer
Lancesoft 4.5
Senior software engineer job in Sunset Hills, MO
Job Title: Lead Applications/Java Developer Type: 3 months Contract to Hire Responsibilities: Lead Java Developer with 8+ years of service, will be working on Spring/Hibernate based web applications BA/BS in Computer Science or related field STRONG Java OO experience required
Excellent Business Domain Modeling skills
STRONG communication skills
Preferred Skills:
Java 1.5/1.6
Angular
Spring
Hibernate & xmL
Oracle/MySQL
Design Patterns
SOA
JQuery
HTML/CSS
JavaScript
Web Services (REST/SOAP)
Additional Information
All your information will be kept confidential according to EEO guidelines.
$88k-111k yearly est. 15h ago
Data Engineer
1904Labs 4.2
Senior software engineer job in Saint Louis, MO
About Us
At Turnberry Labs (formerly 1904labs), we are a human-centered technology company that focuses on using modern tools and technologies to solve enterprise organizations' crunchiest challenges. We look for innovative, courageous, intensely curious, and team-minded people. At Turnberry Labs, we are committed to providing each team member with opportunities that will allow personal and professional growth.
The Role
As a Data Engineer team member, you will work in an Agile environment towards developing, operating, and designing components in the data layer. This will include data strategy, data lineage, data warehousing and storage, cloud architecture storage, optimization, Spark, Hive, Scala, Big Data, and a deep understanding of how data is stored and accessed in a modern environment.
Requirements
Proficient in at least one programming language. More is better, as is experienced with functional and object-oriented languages. For example Scala, Java, or Python.
Proven and recurring success applying softwareengineering practices like requirements gathering, design, and testing on a team.
Working knowledge of the Linux command line and shell scripting
Proficient in SQL
Comfortable leading discussions with clients, acting as a guide to help them accomplish their tech goals.
Desired Skills
In addition to the requirements above, Data Engineers at the Turnberry Labs have proven work experience in at least two of the following areas:
Relational databases like PostgreSQL, Oracle, SQL Server
Non-relational or NoSQL databases like MongoDB, ElasticSearch, Solr, Redis
Big Data / Hadoop technologies like Spark, Hive, HBase / Cassandra
Data Modeling for Data Warehouses, Data Lakes, or operational applications
Cloud-based data ecosystems in AWS, Azure, or GCP. For example, in AWS services like S3, Kinesis, EMR, Athena, or Redshift. In Azure, services like Blob storage, Event Hub, Data Factory, Synapse, or Cosmos DB. In GCP, services like Pub/sub, Dataproc, BigQuery, BigTable, or Datastore.
Streaming technologies like Spark Streaming or NiFi, message queues like Kafka or Rabbit MQ
Why Choose Turnberry Labs?
Development Time - 10% of our work week is set aside to work on our own ideas and projects. We believe that giving folks the time and space to innovate and tinker allows them to bring fresh ideas and perspectives to the work we do.
Competitive salary, bonus, and benefits (medical, dental, paid parental leave, 401k match).
We invest in the personal and professional growth of every employee because we believe growth leads to innovative solutions and personal fulfillment.
Career paths are crafted by you and supported and nurtured by Turnberry Labs.
Experienced team made up of intensely curious and innovative thinkers from a variety of disciplines who inspire each other to come up with the best solutions possible.
Being a trusted advisor to our clients allows us to affect change within their organizations.
We work to create an intentional culture crafted around promoting and supporting the needs of our employees as whole people.
Flexible schedules and a Human-Centered approach to work.
Strong commitment to the community. Take advantage of the relationships we've built with our established community partners or pursue any other community endeavor you are passionate about.
The offered salary will be dependent upon experience
At Turnberry, inclusion is one of our core values. We are committed to creating a positive and connected work environment for all and are fully invested in and focused on hiring and growing a diverse team of high performers. We believe that uniqueness in ideas, experiences, and backgrounds makes us a better Turnberry: Turnberry is an Equal Employment Opportunity employer, and recruits, employs, trains, compensates, and promotes regardless of age, ancestry, family medical or genetic information, gender identity and expression, marital, military, or veteran status; national and ethnic origin; physical or mental disability; political affiliation; pregnancy; race; religion; sex; sexual orientation; and any other protected characteristics.
Americans with Disabilities Act (ADA)
Turnberry will provide reasonable accommodation with our application process upon request as required to comply with applicable laws. If you have a disability and require accommodation
assistance in this application process, please send an email to our Human Resources department.
$78k-107k yearly est. 20h ago
Associate Software Developer
Blitt & Gaines P.C 3.6
Senior software engineer job in Saint Louis, MO
Job Title: Associate Software Developer As an associate software developer, you will be working with Blitt and Gaines, P.C.'s product development team, building and testing automation applications utilizing SQL, C#, Python and Power BI. This role will also continually review the historical and on-going accuracy and integrity of the data and reports generated from our systems.
This is an experienced level position with opportunity for potential advancement into further development roles within the firm. You will report to the Director of Development and work to build a variety of types of applications for our firm.
Key Responsibilities:
* Assist in the design and development of stored procedures and database queries to generate data for reports and dashboards.
* Support the development of automation tools and backend processes using C# or Python.
* Help build and maintain web services and APIs for internal and external applications.
* Collaborate with senior developers and analysts to understand business needs and deliver effective technical solutions.
* Participate in source control workflows using Git and project tracking through Azure DevOps.
* Contribute to the maintenance and evolution of CI/CD pipelines, including testing, builds, and deployment steps.
* Perform basic debugging and troubleshooting under the guidance of senior team members.
* Participate in code reviews, team meetings, and agile ceremonies.
Minimum Requirements:
* 1-2 years of experience with C# or Python in a professional or internship setting.
* Basic experience writing and maintaining SQL queries or stored procedures.
* Familiarity with REST APIs and how to interact with them.
* Exposure to Azure DevOps, Git, or similar tools for version control and project management.
* Basic understanding of CI/CD pipelines and software development best practices.
* Strong willingness to learn, take feedback, and grow technical skills.
* Good communication and teamwork skills.
Preferred Qualifications:
* Coursework or hands-on experience with web service development or automation scripting.
* Exposure to Azure cloud services or other cloud platforms (AWS, GCP).
* Familiarity with reporting or BI tools such as Power BI or SSRS.
* Understanding of agile development and software delivery practices.
Nice to Haves:
* Familiarity with Collection Master software
* Experience in the litigation or collections industry
* Experience with generating AI prompts and implementing AI solutions
* React or other front-end web languages
Benefits:
Blitt and Gaines, P.C. offers PTO, Paid Holidays, Medical Benefits, Competitive Salary and 401k and profit sharing plans! Medical Benefits include - Medical, Dental, Vision, Life Insurance and Short Term Disability.
$67k-86k yearly est. 40d ago
Software Engineering Co-Op
Watlow 4.6
Senior software engineer job in Saint Louis, MO
About the Role Join Watlow's Systems Engineering team and help shape the future of our Digital Twin and Manufacturing Automation initiatives. This co-op blends softwareengineering, data systems, and shop-floor integration to improve how we collect data, automate workflows, and visualize processes across global operations.
You'll collaborate with engineers, operators, and IT specialists to design Python-based solutions that make our manufacturing systems smarter, faster, and more connected.
Key Responsibilities
Develop Python-based web apps to capture and visualize shop-floor data in Azure cloud databases.
Build and maintain data pipelines to Databricks for trend and performance analysis.
Design Raspberry Pi + camera systems for part tracking and operator assistance.
Replace legacy automation (e.g., auto-clickers) with robust Python automation and APIs.
Integrate shop-floor data with company-wide digital systems and dashboards.
Write clean, documented code and create user-friendly interfaces for operators and engineers.
Desired Skills
Proficient in Python (object-oriented programming, automation, data handling).
Familiar with Flask, FastAPI, or Django for web development.
Basic knowledge of databases (SQL/NoSQL) and Azure or other cloud services
Basic knowledge of pulling and pushing data through APIs.
Experience with OpenCV, Raspberry Pi, or sensor integration is a plus.
Interest in machine learning or identifying automation patterns in manufacturing data.
Strong communication skills and willingness to work in a hands-on, cross-functional environment.
Preferred Majors
Computer Engineering
Computer Science
Electrical Engineering
Mechanical Engineering (with Python programming experience)
Biomedical Engineering (with Python/Image processing)
Industrial & Systems Engineering
Mechatronics/Robotics Engineering
Information Systems/IT or related STEM fields
What You'll Gain
Real-world experience applying software to manufacturing and digital transformation.
Exposure to hardware/software integration and automation.
Collaboration with cross-functional teams in engineering, IT, and operations.
The chance to see your code implemented directly on the shop floor to drive measurable impact.
Applicants must be authorized to work for any employer now or in the future in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.
$68k-88k yearly est. 6d ago
Software Engineer II
Mastercard 4.7
Senior software engineer job in OFallon, MO
Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
Title and Summary
SoftwareEngineer II
Overview:
Mastercard's Decision Management Platform team is seeking a Software Developer II to design, develop, and deliver scalable, secure, and high-quality software solutions. In this role, you will contribute to the full software development lifecycle, from analysis and design to implementation and ongoing support, while collaborating with cross-functional teams to meet evolving business needs.
You will play a vital role in a rapidly growing organization, working closely with experienced and driven engineers to solve complex challenges.
Engineers work in small, flexible teams, with every member contributing to the design, development, and testing of features. We follow an Agile approach to software development and practice continuous integration and delivery.
This is a hybrid position based in O'Fallon, MO requiring three days per week onsite.
Role:
* Design, develop, test, implement, and maintain software applications that align with Mastercard engineering standards and best practices.
* Deliver secure, reliable, and scalable software solutions within defined timelines and budgets.
* Research and evaluate alternative technical approaches to meet current and future business needs.
* Conduct feasibility studies, system flowcharting, and logic design to support solution development.
* Collaborate with team members and stakeholders to meet project goals, identify issues early, and recommend practical solutions.
* Independently manage assigned tasks and participate in production incident management and on-call rotations.
* Create and maintain comprehensive technical documentation in line with Mastercard's quality and governance standards.
* Assist seniorengineers in updating documentation and templates to align with evolving project and technology needs.
* Contribute to process improvement initiatives and promote best practices in software development and delivery.
* Support the collection, analysis, and reporting of software and project performance metrics.
All About You:
* Proven experience in softwareengineering, architecture, or development.
* Strong hands-on experience in Java (Java 17 preferred) for developing scalable and high-performance applications.
* Familiarity with CI/CD tools such as Jenkins and Git.
* Working knowledge of cloud platforms (AWS preferred).
* Hands-on experience with containerization technologies (e.g., Docker).
* Experience developing with web technologies such as HTML, JavaScript, and frameworks like Angular or React.
* Solid understanding of database technologies, including both SQL and NoSQL systems.
* Experience developing and integrating RESTful APIs and working within microservices architectures.
* Strong grasp of object-oriented programming, software design patterns, and system performance optimization.
* Proficient in algorithms, data structures, and distributed systems concepts.
* Experience in Agile environments (e.g., Scrum or Kanban) with continuous integration and iterative delivery models.
* Passionate about solving complex, real-world challenges through technology.
* Self-motivated and proactive, with the ability to take ownership and deliver results in fast-paced, collaborative settings.
* Excellent verbal and written communication skills, capable of explaining complex technical concepts to diverse audiences.
* Bachelor degree in Computer Science, SoftwareEngineering, Information Technology, Mathematics, or a related field. Equivalent practical experience may also be considered.
This role is not eligible for Mastercard's work authorization sponsorship. As such, candidates must be eligible to work in the United States, now as well as in the future, without employer sponsorship.
#LI-NF1
#AI3
Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.
Corporate Security Responsibility
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:
* Abide by Mastercard's security policies and practices;
* Ensure the confidentiality and integrity of the information being accessed;
* Report any suspected information security violation or breach, and
* Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.
In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.
Pay Ranges
O'Fallon, Missouri: $92,000 - $147,000 USD
$92k-147k yearly Auto-Apply 40d ago
Mid Software Engineer
Momentum 4.6
Senior software engineer job in Saint Louis, MO
Welcome to the
MOMENTUM.
Team!
MOMENTUM.
is not just our company name; it is the highest value we deliver to our customers. We are a rapidly growing technology solutions company delivering innovative technology, engineering, and intelligence solutions across the DoD sector. The efforts of our high-capacity team ultimately strengthen our Nation and the warfighter.
Our team is dispersed throughout the US, which means we value the diversity and unique collaboration fostered throughout our team. We work incredibly hard for our customers and believe deeply in our core values. We're a high-energy, high-growth team and we love to win.
Mid SoftwareEngineer
MOMENTUM.
is seeking a Mid SoftwareEngineer to join our team in St. Louis, MO, supporting a mission-critical geospatial application. This role requires strong full-stack Python experience, with a focus on API development, Kubernetes deployment, and modern DevOps practices to accelerate delivery. The engineer will work with an existing code base-learning it quickly, manipulating it for adjacent use cases, and implementing new features that advance mission capabilities. A background in geospatial systems, imagery acquisition, and geometry is a significant plus. Candidates must be passionate about modern architectures, able to adapt quickly to existing systems, and excited to tackle challenging technical problems for our mission users.
In this role, you will:
Strong full-stack Python development experience
Experience building and maintaining APIs (ex. FastAPI)
Experience with Kubernetes and DevOps practices to support rapid deployment and sustainment.
Proven ability to work with pre-existing code bases, understand them quickly, and adapt functionality for new use cases.
Experience with web services architecture, design, and development.
Background working in secure cloud environments (e.g., AWS GovCloud, C2S).
Understanding of geospatial systems, including imagery acquisition, geometry, and related workflows.
Familiarity with geospatial data tools and libraries (e.g., PostGIS, ArcGIS, GDAL).
Prior exposure to DoD/IC mission applications.
If you're right for this role, you have:
Active Top-Secret Clearance with the ability to obtain an SCI
BS or equivalent in Computer Science, Engineering, Mathematics, Information Systems, or equivalent technical degree.
5+ years with a Bachelor's degree in a technical field, or 3+ years with a Master's in a technical field
To learn more about us, check out our website at ********************
MOMENTUM.
is an EEO/M/F/Veteran/Disabled Employer:
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.
To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The qualifications listed above are representative of the knowledge, skill, and ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.
Accommodations:
Consistent with the Americans with Disabilities Act (ADA) and Alabama civil rights law, it is the policy of
MOMENTUM.
to provide reasonable accommodation when requested by a qualified applicant or employee with a disability, unless such accommodation would cause an undue hardship. The policy regarding requests for reasonable accommodation applies to all aspects of employment, including the application process. If reasonable accommodation is needed, please include a request when applying.
How much does a senior software engineer earn in University City, MO?
The average senior software engineer in University City, MO earns between $69,000 and $114,000 annually. This compares to the national average senior software engineer range of $86,000 to $151,000.
Average senior software engineer salary in University City, MO
$89,000
What are the biggest employers of Senior Software Engineers in University City, MO?
The biggest employers of Senior Software Engineers in University City, MO are: