Staff software engineer jobs in Colorado

We are seeking an experienced Software Development Team Manager to lead our engineering team in Boulder, CO. In this role, you will provide technical direction, mentor engineers, manage execution, and partner closely with product, architecture, and UX to deliver mission-critical features of our client's platform. You will drive engineering excellence, ensuring the team consistently produces high-quality work, follows strong development practices, and leverages our client's development ecosystem, consistent UI and UX development patterns, and our comprehensive Figma design system. Key Responsibilities Lead and mentor a team of software engineers, guiding their technical growth, productivity, and craftsmanship. Help oversee planning, execution, and delivery of sprint commitments, ensuring clarity, alignment, and predictable velocity. Collaborate closely with product owners, UX designers, and software architects to shape requirements, refine work packages, and drive technical feasibility. Maintain high standards of code quality, architecture, testing, documentation, and system reliability across the engineering organization. Identify bottlenecks and improve engineering processes, workflows, tooling, and communication for a high-performance development environment. Participate in solution design and technical decision-making, ensuring the team's work aligns with our client's engineering principles and long-term platform architecture. Support hiring, onboarding, and capability development to build a resilient, world-class engineering team in Boulder. Qualifications Required Bachelor's in Computer Science, Engineering, or related field. 10-12+ years of professional software development experience. 7+ years of engineering leadership or team management experience. Strong background in C#, .NET, cloud-native architectures, and building enterprise-grade software. Proven track record of leading teams through complex feature development, architectural evolution, QA testing and high-velocity delivery. Strong communication skills with the ability to translate ambiguity into clear plans and coach engineers toward consistent performance. Preferred (Not Required) Background managing teams that integrate closely with design system-driven workflows (Figma, component libraries, UI standards). Experience with DevOps practices, CI/CD automation, and modern distributed systems. Prior leadership in early-stage or scaling product teams.

*** W2 Contract Only - No C2C - No 3rd Parties *** The Ash Group is hiring a Lead Software Engineer (Full Stack) for our client (one of the largest private credit providers in the US agricultural economy) based in Greenwood Village, CO (hybrid). This is a high-impact role requiring 6-8 years of experience, with mandatory hands-on expertise in React (4+ years) and Node.js (4+ years). You will be leading the design and development of foundational SPA (Single Page Application) and BFF (Backend for Frontend) architecture on AWS, driving major digital transformation and automating business processes. Role Details Compensation: Competitive pay rate of $95 per hour. Benefits: Medical, dental, vision, and direct primary care benefits. After six months of employment, enjoy a 4% matched 401(k) plan with immediate 100% vesting. Duration: 6-month contract with possible extension. Location: Hybrid in Greenwood Village, CO (availability during 9 am - 5 pm MT core hours required). What You'll Be Doing Lead the design, development, and implementation of technical solutions as a Full Stack Engineer, with a focus on building robust, cloud-based solutions on AWS. Mandatory hands-on development using React, HTML/CSS, and Node.js, including the creation of Restful APIs for Single Page Applications. Support the RPA (Robotics Process Automation) team and develop solutions for improving quality, delivery, and customer/employee experience using automation technologies. Apply a strong understanding of the Software Development Lifecycle (SDLC) and CI/CD pipelines (e.g., Git, Docker, Kubernetes) to ensure reliable deployments and automation. Provide workday and after-hours production support, including troubleshooting, problem correction, and root cause analysis. What We're Looking For 6-8 years of experience as a Software Engineer. 4+ years of hands-on experience with Front-end technologies: React, HTML/CSS. 4+ years of hands-on experience with Back-end technologies: Node.js. Experience building Restful APIs and developing Single Page Applications (SPAs). Experience with AWS (or GCP, Azure) and container orchestration services like Docker and Kubernetes. Strong understanding of CI/CD pipelines, Git, and version control processes. Proficiency with SQL, Python, and open-source databases is a plus. This is a rare opportunity to work on an architecture being built from the ground up, driving the launch of new, transformative digital processes for a major financial institution. #SoftwareEngineer #LeadEngineer #FullStackDeveloper #React #NodeJS #AWS #SPA #BFF #RPA #Kubernetes #GreenwoodVillageJobs #ColoradoJobs #HybridWork #Contract

Software Development Engineer in Test (SDET) Active US Security Clearance required Are you the kind of engineer who loves breaking things so the system becomes stronger? If you enjoy pushing distributed systems to their limits and building automation that mirrors real world behaviors, this role will be right up your street. A fast growing space technology company is searching for an SDET to help test, validate, and stress their mission critical software. You will work on technology that powers satellite operations, command and control services, and large scale real time behaviours. You do not need to be a space expert. If you love Python, automation, and solving complex problems, you will thrive here. What you will be doing • Building and automating tests that mirror real customer use cases • Simulating hundreds to thousands of satellites running operations • Acting as a chaos tester to uncover weaknesses and improve system resilience • Troubleshooting and fixing bugs across deployed backend systems • Testing APIs, databases, event driven architectures, and containerized environments • Supporting CI and automation within modern DevOps pipelines • Working closely with frontend, backend, and product teams to ensure quality at scale What you will need • Proficiency in Python • Experience with Playwright, Cypress, or similar end to end testing frameworks • Strong understanding of containerized and serverless architectures • Skilled in API testing and distributed databases • Experience building CI or automation pipelines, ideally with GitHub Actions • A track record of solving technical problems with minimal oversight • Active US Security Clearance (Secret required, TS or TS SCI preferred) • Must meet ITAR requirements (US citizen, US national, green card holder) What you will get • Hybrid work, two days per week on site with flexibility • Comprehensive health insurance with full coverage for employees • Unlimited PTO with a requirement to take at least 15 days • Most US federal holidays observed • Quarterly wellness benefits • 4 percent 401(k) matching • Quarterly offsites in great destinations • A team that values ownership, curiosity, and continuous improvement If you are excited by the idea of testing systems at scale and helping shape the future of satellite operations, I would love to speak with you. Feel free to reach out to Ciara Holmes at EVONA for more information or to apply directly.

Job Title: Software Engineer Clearance: Active & transferable TS/SCI with Polygraph Salary: $130,000 - $145,000 Benefits: This role includes Medical, Dental, and Vision coverage, 6 weeks of paid PTO, Short-Term Disability, a 401(k) with 5% company match, and up to $8,000 in relocation assistance. Full Benefits package can be sent upon request. About the Company This role is being managed by Talent Stack LLC, a woman-owned recruiting firm specializing in cleared and technical placements. We proudly represent a confidential defense-focused client supporting critical national security programs. About the Role We are seeking a Software Engineer to support mission-critical ground systems for a leading defense customer. In this role, you will evaluate operational software issues, provide rapid solutions, and support integration and verification activities for new software baselines. This position is hands-on and ideal for engineers who thrive in real-time, high-impact operational environments. What You Will Do Support troubleshooting, maintenance, and documentation of operational software applications. Troubleshoot and isolate sources of system errors or unexpected performance. Execute testing, integration, and delivery of new software baselines. Perform in-depth analysis across complex, end-to-end operational systems. Work onsite within a secure environment supporting mission operations. Required Qualifications Bachelor's degree in STEM. 2+ years of professional level experience at a government contractor or agency. Experience coding in Java or C++. Hands-on experience with software development and/or software integration. Active, transferable TS/SCI with Polygraph required prior to start. Preferred Qualifications Experience with Git, Bitbucket, or similar configuration management tools. Ability to work in a structured configuration-controlled O&M environment supporting real-time applications. Experience with Linux/Unix, GIT, and SQL. Familiarity with JIRA, BitBucket, and Confluence. This role requires an active and transferable DoD Top Secret security clearance, with the ability to obtain and maintain TS/SCI access and polygraph. Only U.S. citizens are eligible for security clearance. Candidates without the required clearance cannot be considered for this position. Recruitment Agencies Disclaimer This position is posted for direct applicants only. We kindly request that external recruiters, staffing agencies, or search firms refrain from submitting candidates. Unsolicited resumes will be treated as direct applications, and no agency fees will be honored. Reference Number: X15

As a software developer on an Internal Research and Development (IRAD) team. You will work in a collaborative environment to understand system requirements, create and implement new capabilities and algorithms. Many of the algorithms and capabilities implemented by the team will be mathematics and physics intensive complex solutions that will be highly critical to the system performance. In addition to software development you will also be expected to support reviews of requirements and test cases that are developed for the software capability. Basic Qualifications: Bachelor's degree in STEM related field, and 5 Years with Bachelors in Science; 3 Years with Masters; 1 Year with PhD. Applicants must have a current, active in-scope DoD-issued Secret security clearance at the time of application, which is required to start Recent and extensive Experience Developing Software in C++ or Java Quick to learn and absorb new concepts and information Recent MATLAB and or Python Experience Must have an Interim or Active Secret Clearance Unix/Linux Operating System Experience Must be able to support an in-person / closed-area work environment Preferred Qualifications: Highly experienced with Linux, scripting, and operations Experience with automated software requirements testing and analysis Experience with the battle management and or fire control systems Experience with containerization technologies (e.g., Docker, Kubernetes) and container orchestration. Experience with Behavior Driven Development (BDD) using tools like Gherkin and Cucumber for automated acceptance testing Experience with Static & Dynamic Code Analysis Tools and Fuzzing Tools such as: Coverity, Fortify, AND/OR SonarQube Experience developing software in an Model Based Systems Engineering (MBSE) environment. Experience with CI/CD, containers, and pipelines. Experience with Software Change Control, Change Management, Code Quality, Static Analysis, and CI/CD tools such as: Atlassian tool suite, Jira, GitHub, GitLab, SonarQube, Coverity, and Jenkins. Very solid background in math and physics Advanced degree in Mathematics or Physics or Computer Science.

Job Title : DevOps Engineer - IAM Automation Development Duration : 6+ months Responsibilities Must Have Skills Skills: Terraform, PowerShell scripting, Python coding Expertise: Cloud CSP (Azure, AWS/GCP) and IAM implementation and best practice knowledge. Experience: Large enterprise-scale projects and company experience (10,000+ employees), not small business. USA Citizen and GSA certification required. Optional industry certifications, practical expertise prioritized. Experience Level: 3+ years minimum in relevant roles. Nice to have skills Implement SLA (4-hour delivery) compliance for automation tickets. Complete current and upcoming automation projects without disruption. Implement RBAC and PIM automation as per requirements. Ensure quality and timely delivery of all milestones. Job Description: Key Responsibilities: Expertise: Cloud CSP (Azure, AWS/GCP) and IAM implementation and best practice knowledge. Experience: Large enterprise-scale projects and company experience (10,000+ employees), not small business. USA Citizen and GSA certification required. Optional industry certifications, practical expertise prioritized. Experience Level: 3+ years minimum in relevant roles. Please provide the TOP skills, and the years of experience that you'll consider: Terraform, PowerShell scripting, Python coding

Title: Java Developer Duration:Direct-hire Salary range: Up to $150,000 This role focuses on building scalable, secure, and high-performing applications within a modern cloud-based environment. The developer will contribute to the design, implementation, and improvement of backend services, integrations, and system components. The ideal candidate is strong in Java, experienced with AWS tools, and comfortable working in an Agile setting. This position collaborates closely with cross-functional teams, supports high-impact technical initiatives, and helps shape best practices across the development lifecycle. Responsibilities Develop and maintain reliable, efficient backend services and software components. Participate in solution design for complex features and enhancements, ensuring adherence to engineering standards and control requirements. Troubleshoot issues across systems, identify root causes, and propose broad-reaching improvements. Work closely with product, QA, and architecture teams to deliver high-quality functionality. Contribute to documentation, design discussions, and code reviews. Support Agile workflows and contribute to continuous improvement efforts. Apply strong understanding of system interactions, integrations, and data flows to ensure seamless functionality. Promote best practices for performance, scalability, and resiliency. Skills 8-10+ years of professional Java development experience. Deep experience with Java/J2EE technologies. Strong AWS knowledge (EC2, S3, Lambda, SNS/SQS, etc.). Experience with databases such as MongoDB, MySQL, or ElasticSearch. Familiarity with event-driven design or rules engines. Knowledge of scalable system design concepts and architecture patterns. Prior experience in Agile/Scrum environments. Excellent problem-solving skills and ability to manage multiple priorities. Strong communication and collaboration capabilities. Desired Skills and Experience Skills 8-10+ years of professional Java development experience. Deep experience with Java/J2EE technologies. Strong AWS knowledge (EC2, S3, Lambda, SNS/SQS, etc.). Experience with databases such as MongoDB, MySQL, or ElasticSearch. Familiarity with event-driven design or rules engines. Knowledge of scalable system design concepts and architecture patterns. Prior experience in Agile/Scrum environments. Excellent problem-solving skills and ability to manage multiple priorities. Strong communication and collaboration capabilities. All qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, and Los Angeles County Fair Chance Ordinance. For unincorporated Los Angeles county, to the extent our customers require a background check for certain positions, the Company faces a significant risk to its business operations and business reputation unless a review of criminal history is conducted for those specific job positions.

Client located in Englewood, Colorado is seeking a Senior DevOps Engineer for a contract to hire position. This person will join a five-person team for DevOps in a mixed AWS / Azure environment. HYBRID SCHEDULE: This role requires onsite work 3 days per week. Only local candidates will be considered. Required: -5+ years DevOps experience. -Strong containerization skills (Docker, Kubernetes). -Strong automation skills (PowerShell, Python, Bash). -Terraform expertise. -Leadership mentality - willing to mentor and help team with implementing best practices. Desired: -Certifications (DevOps Engineer, Terraform Associate) -Computer Science degree.

About the Role: This role is a Senior .NET Full Stack Developer for a client of ours in the tech solutions space. Looking for someone with 5+ full stack development. Required Skills: Bachelor's Degree in IT, Computer Science, or similar 5+ years of full stack development using .NET (C#) frameworks NoSQL experience AWS and / or Azure experience About the Company: Our client in the tech solutions space is a small but growing company based in Colorado. They have a superior software product and are continuing to grow at a rapid pace. They work hard and have an excellent culture.

Crosscheck Staffing is currently working with a well-funded startup approaching Series A funding. This is a hands-on role focused primarily on backend systems, APIs, and integrations, with occasional frontend work. You'll be joining a small, highly collaborative team at an inflection point as the company gains momentum and prepares for its next phase of growth. What We're Looking For Strong backend engineer with experience building and owning production APIs Hands-on experience integrating third-party APIs and external systems Comfortable owning features end-to-end in a small, early-stage team Familiarity with modern backend languages and frameworks (Node/TypeScript, Python, Go, etc.) Willingness to contribute to frontend work when needed (not a frontend-heavy role) Enjoys in-person collaboration and early-stage startup environments Our Stack (Nice to Have, Not Required) TypeScript, React NestJS, Postgres, Prisma AWS, Docker, Vercel

Targeting Top Computer Science Universities 🚀 Start your career building production AI - not side projects. We're a fast-growing, venture-backed company redesigning how the world moves goods through intelligent transportation systems. Our tech is deployed in operational environments - solving real, high-stakes problems in logistics and mobility at scale. Join us as a Graduate Engineer and take true ownership from day one. You'll help build the backbone of a platform used globally, working alongside experienced engineers in a deeply technical environment. What You'll Do Build full-stack features using TypeScript (React/Next.js) and Python (FastAPI/Django) Develop scalable APIs and backend services powering AI-driven decision systems Productionise machine learning models into real-world workflows Optimise performance, reliability, and system efficiency Ship quickly in a collaborative, high-accountability engineering culture What We're Looking For Final-year or recent CS graduates from top-ranked global universities Strong fundamentals: algorithms, data structures, distributed systems Hands-on experience in Python and/or TypeScript from internships or advanced projects Evidence of excellence: open-source, research, hackathons, impactful university work Curious, ambitious engineers who want to solve hard problems at scale Ability to work onsite in Denver at least 3 days/week Why Join Work on production AI infrastructure Immediate impact and early ownership Mentorship from senior engineers solving complex system challenges Build technology shaping the future of global transportation

Targeting Top Computer Science Universities 🚀 Start your career building production AI - not side projects. We're a fast-growing, venture-backed company redesigning how the world moves goods through intelligent transportation systems. Our tech is deployed in operational environments - solving real, high-stakes problems in logistics and mobility at scale. Join us as a Graduate Engineer and take true ownership from day one. You'll help build the backbone of a platform used globally, working alongside experienced engineers in a deeply technical environment. What You'll Do Build full-stack features using TypeScript (React/Next.js) and Python (FastAPI/Django) Develop scalable APIs and backend services powering AI-driven decision systems Productionise machine learning models into real-world workflows Optimise performance, reliability, and system efficiency Ship quickly in a collaborative, high-accountability engineering culture What We're Looking For Final-year or recent CS graduates from top-ranked global universities Strong fundamentals: algorithms, data structures, distributed systems Hands-on experience in Python and/or TypeScript from internships or advanced projects Evidence of excellence: open-source, research, hackathons, impactful university work Curious, ambitious engineers who want to solve hard problems at scale Ability to work onsite in Denver at least 3 days/week Why Join Work on production AI infrastructure Immediate impact and early ownership Mentorship from senior engineers solving complex system challenges Build technology shaping the future of global transportation

Now Hiring: Systems Software Engineer II 📍 Denver , Colorado | 💰 $108,000 - $135,000 per year 🏢 About the Role We're looking for an experienced Systems Software Engineer II to join Sunbelt Controls, a leading provider of Building Automation System (BAS) solutions across the Western U.S. In this role, you'll develop and program databases, create custom graphics, and integrate control systems for smart buildings. You'll also support project startups, commissioning, and troubleshooting - working closely with project managers and engineers to deliver high-quality, energy-efficient building automation solutions. If you have a passion for technology, problem-solving, and helping create intelligent building systems, this opportunity is for you. ⚙️ What You'll Do Design and program BAS control system databases and graphics for assigned projects. Lead the startup, commissioning, and troubleshooting of control systems. Work with networked systems and diagnose LAN/WAN connectivity issues. Perform pre-functional and functional system testing, including LEED and Title 24 requirements. Manage project documentation, including as-builts and commissioning records. Coordinate with project teams, subcontractors, and clients for smooth execution. Mentor and support junior Systems Software Engineers. 🧠 What We're Looking For 2-5 years of experience in Building Automation Systems or a related field. Associate's degree in a technical field (Bachelor's in Mechanical or Electrical Engineering preferred). Proficiency in MS Office, Windows, and basic TCP/IP networking. Strong organizational skills and the ability to manage multiple priorities. Excellent communication and customer-service skills. Valid Colorado driver's license. 💎 Why You'll Love Working With Us At Sunbelt Controls, we don't just build smart buildings - we build smart careers. As a 100% employee-owned company (ESOP), we offer a supportive, growth-oriented environment where innovation and teamwork thrive. What we offer: Competitive salary: $108K - $135K, based on experience Employee-owned company culture with a family-oriented feel Comprehensive health, dental, and vision coverage Paid time off, holidays, and 401(k)/retirement plan Professional growth, mentorship, and ongoing learning opportunities Veteran-friendly employer & Equal Opportunity workplace 🌍 About Sunbelt Controls Sunbelt Controls is a premier BAS solutions provider serving clients across multiple industries, including data centers, healthcare, education, biotech, and commercial real estate. We specialize in smart building technology, system retrofits, analytics, and energy efficiency - helping clients reduce operational costs and achieve sustainable performance. 👉 Apply today to join a team that's shaping the future of intelligent buildings. #Sunbelt #BuildingAutomation #SystemsEngineer #HVACControls #BASCareers

Sr. Business Intelligence Engineer Compensation: $125k - $145k (DOE) Inceed has partnered with a great company to help find a skilled Sr. Business Intelligence Engineer to join their team! Join a dynamic and innovative team that is leading the charge in data management and analytics. This exciting role offers the opportunity to work on cutting-edge projects and shape the company's data landscape. Key Responsibilities & Duties: Lead the design and implementation of data lakehouse infrastructure Integrate cloud-based storage for scalability and durability Implement raw data ingestion Optimize data processing frameworks for analytics Required Qualifications & Experience: Minimum eight years of IT experience Six years in data engineering and project planning Three years with Microsoft Fabric or Azure technologies Proven experience in data lakehouse architecture Advanced SQL skills in MS SQL or Oracle databases Experience developing Power BI reports Excellent communication and organizational skills Perks & Benefits: This opportunity includes a comprehensive and competitive benefits package-details will be shared during later stages of the hiring process. Other Information: Hybrid work schedule This position requires a background check and drug test If you are interested in learning more about the Sr. Business Intelligence Engineer opportunity, please submit your resume for consideration. Our client unable to provide sponsorship at this time. We are Inceed, a staffing direct placement firm who believes in the possibility of something better. Our mission is simple: We're here to help every person, whether client, candidate, or employee, find and secure what's better for them. Inceed is an equal opportunity employer. Inceed prohibits discrimination and harassment of any type and affords equal employment opportunities to employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity, or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.

As a Senior DevOps Engineer at Vertex IT Systems, you will play a crucial role in designing, implementing, and maintaining infrastructure that supports our applications and services. You will work closely with our development, operations, and security teams to ensure scalable, reliable, and secure environments. This role is ideal for someone with a strong technical background in Linux OS, AWS, and DevOps tools like GitLab, Terraform, and Kubernetes. Job Responsibilities: Design, build, and maintain cloud infrastructure, ensuring high availability and performance. Collaborate with development teams to streamline CI/CD pipelines using tools like GitLab. Manage and optimize AWS environments (AWS certifications preferred but not required). Implement Infrastructure as Code (IaC) solutions using Terraform (preferred) for provisioning infrastructure. Automate system configuration, application deployment, and scaling using programming languages such as Python, Node.js, or Golang (preferred). Manage Kubernetes clusters (preferred) to orchestrate containerized applications. Monitor, troubleshoot, and enhance system performance and reliability. Provide expertise on network fundamentals (TCP/IP layers), ensuring network security and efficiency. Continuously improve infrastructure security, performance, and scalability. Job Skills/Qualification Requirements: Bachelor s Degree in Computer Science, Software Engineering, or a related field. Strong knowledge of network fundamentals including TCP/IP layers. Hands-on experience with Linux OS administration. Proficiency in AWS with practical experience (AWS certifications are a plus but not required). Experience with programming languages like Python, Node.js, and Golang (preferred). Expertise in using GitLab for version control and CI/CD pipelines (required). Familiarity with Infrastructure as Code (IaC) tools, especially Terraform (preferred). Practical experience with Kubernetes for container orchestration (preferred). Strong problem-solving skills and a passion for automation and process improvement. Nice to Have: Experience with other cloud platforms like Google Cloud Platform or Azure. Understanding of monitoring tools (e.g., Prometheus, Grafana). Knowledge of security best practices in DevOps and cloud environments.

Java Developer with Surescript We are seeking a highly skilled Java Developer with strong expertise in Microservices and Spring Boot. The ideal candidate should have a solid understanding of cloud modernization practices and some exposure to mobile development (iOS or Android). Key Responsibilities: Design, develop, and maintain scalable Java-based applications using Spring Boot and Microservices architecture. Contribute to cloud modernization initiatives, including migration and optimization of existing platforms. Collaborate with cross-functional teams to deliver high-quality software solutions. Participate in code reviews, troubleshooting, and performance tuning. Work closely with mobile development teams to ensure seamless integration across platforms. Required Skills: Strong hands-on experience with Java, Spring Boot, and Microservices. Good understanding of cloud platforms (Azure, or GCP). Knowledge or experience in iOS or Android application development. Familiarity with CI/CD pipelines, RESTful APIs, and containerization (Docker/Kubernetes). Excellent problem-solving and communication skills. Java 21 with minimum 7 years' experience. Preferred Qualifications: Experience in cloud migration or modernization projects. Exposure to DevOps tools and practices. Bachelor's degree in Computer Science, Engineering, or a related field.

**Posting Title** Post-Undergraduate/Graduate (Year-Round) Software Engineering Intern for Grid Modeling Applications . . Type** Intern (Fixed Term) . **Hours Per Week** 40 . **Working at NLR** NLR is located at the foothills of the Rocky Mountains in Golden, Colorado is the nation's primary laboratory for energy systems research and development. Join the National Laboratory of the Rockies (NLR), where world-class scientists, engineers, and experts are accelerating energy innovation through breakthrough research and systems integration. From our mission to our collaborative culture, NLR stands out in the research community for its commitment to an affordable and secure energy future. Spanning foundational science to applied systems engineering and analysis, we focus on solving complex challenges to deliver advanced, secure, reliable, and cost-effective energy solutions. Our work helps strengthen U.S. industries, support job creation, and promote national economic growth. At NLR, you'll find a mission-driven environment supported by state-of-the-art facilities, multidisciplinary research teams, and strong collaborations with industry, academia, and other national laboratories. We offer robust professional development opportunities, and a competitive benefits package designed to support your career and well-being. **Job Description** Ready to build software that powers the future? The National Laboratory of the Rockies (NLR) is looking for a creative and driven intern to join our Application Development team. This isn't your average internship; you'll be writing code that helps researchers, policymakers, and industry leaders solve some of the world's most pressing energy challenges. This role focuses on turning complex scientific models and data into robust, user-friendly software applications. You'll work alongside world-class scientists and software engineers to design, develop, and deploy tools that analyze and visualize the future of energy. If you have a passion for elegant code and an interest in making a real-world impact, we want to hear from you. Your work will contribute to the open source Sienna Tool which was developed by NLR NREL-Sienna · GitHub (******************************* . The primary programming language for this project will be **Julia** , known for its high performance in scientific computing. **Primary Responsibilities** + Contribute to the full software development lifecycle, from design and prototyping to testing and deployment of applications in the Sienna platform. + Develop new features for existing energy analysis applications and libraries. + Collaborate with researchers take technical specifications and translate them into code. + Write documentation and unit tests to ensure code quality and maintainability. + Participate in code reviews and team meetings, actively contributing to our agile development process. **Submission Guidelines** To be considered, please submit your resume and links to your GitHub profile and a portfolio showcasing your best work. The portfolio can include web apps, desktop tools, data analysis projects, or significant contributions to open-source software. . **Basic Qualifications** Must be enrolled as a full-time student in a Bachelor's, Master's or PhD degree program, or graduated in the past 12 months from an accredited institution. Candidates who have earned a degree may work for a period not to exceed 12 months. Must have a minimum of a 3.0 cumulative grade point average. Please Note: -You will need to upload official or unofficial school transcripts as part of the application process. -If selected for position, a letter of recommendation will be required as part of the hiring process. *** Must meet educational requirements prior to employment start date.** **Additional Required Qualifications** + Completed a Bachelor's or Master's degree in Computer Science, Data Science, Software Engineering, Applied Mathematics, or a related field, or currently enrolled in a master's or PhD program in these fields + Demonstrated proficiency in at least one modern programming language (e.g., Julia or Python + Solid understanding of core computer science principles and software engineering practices + Experience using Git and GitHub for version control + A link to a GitHub profile and a portfolio of software projects or applications is required for consideration + Excellent problem-solving and communication skills **Preferred Qualifications** + Experience with web application development tools (OpenAPI, ZeroMQ, Docker Container, etc.) + Knowledge of software development best practices like CI/CD and automated testing + A strong interest in power systems . **Job Application Submission Window** The anticipated closing window for application submission is up to 30 days and may be extended as needed. **Annual Salary Range (based on full-time 40 hours per week)** Job Profile: / Annual Salary Range: $50,200 - $80,300 NLR takes into consideration a candidate's education, training, and experience, expected quality and quantity of work, required travel (if any), external market and internal value, including seniority and merit systems, and internal pay alignment when determining the salary level for potential new employees. In compliance with the Colorado Equal Pay for Equal Work Act, a potential new employee's salary history will not be used in compensation decisions. **Benefits Summary** Benefits include medical, dental, and vision insurance; 403(b) Employee Savings Plan with employer match*; and sick leave (where required by law). NLR employees may be eligible for, but are not guaranteed, performance-, merit-, and achievement- based awards that include a monetary component. Some positions may be eligible for relocation expense reimbursement. Internships projected to be less than 20 hours per week are not eligible for medical, dental, or vision benefits. ***** Based on eligibility rules **Badging Requirement** NLR is subject to Department of Energy (DOE) access restrictions. All employees must also be able to obtain and maintain a federal Personal Identity Verification (PIV) card as required by Homeland Security Presidential Directive 12 (HSPD-12), which includes a favorable background investigation. Intern assignments extending beyond six months will be subject to this requirement. **Drug Free Workplace** NLR is committed to maintaining a drug-free workplace in accordance with the federal Drug-Free Workplace Act and complies with federal laws prohibiting the possession and use of illegal drugs. Under federal law, marijuana remains an illegal drug. If you are offered employment at NLR, you must pass a pre-employment drug test prior to commencing employment. Unless prohibited by state or local law, the pre-employment drug test will include marijuana. If you test positive on the pre-employment drug test, your offer of employment may be withdrawn. **Submission Guidelines** Please note that in order to be considered an applicant for any position at NLR you must submit an application form for each position for which you believe you are qualified. Applications are not kept on file for future positions. Please include a cover letter and resume with each position application. . **Equal Opportunity Employer** All qualified applicants will receive consideration for employment without regard basis of age (40 and over), color, disability, gender identity, genetic information, marital status, domestic partner status, military or veteran status, national origin/ancestry, race, religion, creed, sex (including pregnancy, childbirth, breastfeeding), sexual orientation, and any other applicable status protected by federal, state, or local laws. **Reasonable Accommodations (******************************************************* **E** **-Verify** ************************ **For information about right to work, click here (************************************************************************************************** for English or** **here (************************************************ for Spanish.** E-Verify is a registered trademark of the U.S. Department of Homeland Security. This business uses E-Verify in its hiring practices to achieve a lawful workforce. The National Laboratory of the Rockies (NLR) is a leader in the U.S. Department of Energy's effort to secure an environmentally and economically sustainable energy future. With locations in Golden and Boulder, Colorado, and a satellite office in Washington, D.C., NLR is the primary laboratory for research, development, and deployment of renewable energy technologies in the United States. NLR is subject to Department of Energy (DOE) access restrictions. All candidates must be authorized to access the facility per DOE rules and guidance within a reasonable time frame for the specified position in order to be considered for an interview and for hiring. DOE rules for site access during the interview process depend on whether the candidate is interviewed on-site, off-site, or via telephone or videoconference. All employees must also be able to obtain and maintain a federal Personal Identity Verification (PIV) card as required by Homeland Security Presidential Directive 12 (HSPD-12), which includes a favorable background investigation. Additionally, DOE contractor employees are prohibited from participating in certain Foreign Government Talent Recruitment Programs (FGTRPs). If a candidate is currently participating in an FGTRP, they will be required to disclose their participation after receiving an offer of employment and may be required to disengage from participation in the FGTRP prior to commencing employment. Any offer of employment is conditional on the ability to obtain work authorization and to be granted access to NLR by the Department of Energy (DOE). **Drug Free Workplace** NLR is committed to maintaining a drug-free workplace in accordance with federal Drug-Free Workplace Act and complies with federal laws prohibiting the possession and use of illegal drugs. Under federal law, marijuana remains an illegal drug. If you are offered employment at NLR, you must pass a pre-employment drug test prior to commencing employment. Unless prohibited by state or local law, the pre-employment drug test will include marijuana. If you test positive on the pre-employment drug test, your offer of employment may be withdrawn. Please review the information on our Hiring Process (************************************************* website before you create an account and apply for a job. We also hope you will learn more about NLR (**************************** , visit our Careers site (****************************** , and continue to search for job opportunities (**************************************** at the lab.

This role is with RippleMatch's partner companies. RippleMatch partners with hundreds of companies looking to hire top talent. About RippleMatch RippleMatch is your AI-powered job matchmaker. Our platform brings opportunities directly to you by matching you with top employers and jobs you are qualified for. Tell us about your strengths and goals - we'll get you interviews! Leading employers leverage RippleMatch to build high-performing teams and Gen Z job seekers across the country trust RippleMatch to launch and grow their careers. Requirements for the role Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field. Hands-on experience from internships or personal projects in software development is preferred. Strong foundation in programming languages such as Java, C#, Python, or JavaScript. Understanding of software development methodologies (e.g., Agile, Scrum) and software lifecycle management. Familiarity with database management and basic SQL. Ability to design, code, test, and manage complex software applications. Strong problem-solving skills and the ability to debug code and solve technical challenges. Excellent organizational and project management skills, with the ability to manage multiple tasks and deadlines effectively. Effective communication and interpersonal skills, essential for working collaboratively in a team environment. Eagerness to learn new technologies and frameworks and stay updated with the latest industry trends.

Job Title: Senior UI Software Engineer (On Site) No C2C Offers please. Candidates must be able to work in the US without a sponsor. Our client is engineering a next-generation Work Orchestration platform-one that transforms complex organizational processes into clear, intuitive, action-driven experiences. Their UI and UX are central to that mission. They develop their front end using WiseJ, enabling engineers to build rich, enterprise interfaces entirely in C# and .NET-with strongly typed code, centralized controls , and without the typical bloat of sprawling JavaScript frameworks and constantly shifting third-party libraries. Their engineering team is supported by a world-class, fully-managed Figma Design System, including design tokens, responsive variants, and component-compliant wireframes and prototypes. This gives engineers a complete, consistent UI blueprint-freeing them to focus on architecture, performance, and behavior rather than recreating UI patterns from scratch. If you want to build beautifully engineered, large-scale UI systems in an environment designed for clarity and craftsmanship, Nexee is the place. Position Overview: We are seeking a Senior UI Software Engineer to lead development of a an enterprise-grade interface. You will architect highly interactive, intelligent User Interfaces using a unified .NET and WiseJ stack, while collaborating closely with product and design to deliver a first-class user experience. Key Responsibilities • Architect and implement high-performance user interfaces using WiseJ, C#, and .NET, with a strongly typed and unified codebase. • Translate Figma design system components, wireframes, and prototypes directly into consistent, pixel-aligned engineering implementations. • Develop adaptive layouts, multi-panel interfaces, drag-and-drop tools, and other advanced interaction patterns for enterprise-scale use cases. • Maintain clean, composable, reusable UI architecture that avoids unnecessary libraries and minimizes complexity. • Collaborate with UX, product, and backend engineering to ensure seamless integration across all system layers. • Contribute to UI standards, internal tooling, code quality, and mentorship of other engineers. • Team management experience. Qualifications Required • Bachelor's in Computer Science, Engineering, or related field. • 6-10+ years of UI engineering experience with complex, data-heavy, or enterprise platforms. • Strong proficiency in C#, .NET, Visual Studio, and object-oriented UI development. • Experience designing and shipping real-time, component-driven UI systems. • Deep understanding of UI architecture, state management, and interaction modeling. Preferred (Not Required) • Experience with WiseJ or other server-managed UI frameworks. • Experience working with structured Figma design systems, including tokens, variants, and engineering-aligned prototypes. • Background building reusable UI component libraries and internal platform frameworks. • Familiarity with distributed systems, real-time data and workflow automation tools. Why this job? • Competitive salary and benefits • Collaborative, high-talent, on-site engineering culture in Boulder, CO • A unified, strongly typed UI stack-no fractured front-end layers • Direct influence over a platform designed for massive scale • A culture that values clarity, simplicity, craftsmanship, and deep work How to • Competitive salary and benefits. • A flexible and dynamic work environment. • Opportunities for professional growth and development. • A culture that values work-life balance. • The chance to be part of a transformative enterprise solution.