Software Engineer

Salary: $86000 - 215000 per year Requirements: We require a bachelors degree in computer science or a closely related field. We can consider junior, mid, or senior candidates, with at least 1 year of experience on a project of similar scope or complexity, or no experience if the candidate holds a masters or doctoral degree. We need experience with software programming and scripting in C++, Python, Bash, and object-oriented programming environments. We require U.S. citizenship and an active DoD Secret clearance with an investigation date within the last 6 years. We require the ability to obtain and maintain a Top Secret and Special Access Program clearance within a reasonable timeframe. We are looking for a mission-driven professional who collaborates effectively and is motivated to develop advanced solutions in support of national and global security. Preferred candidates will bring experience with RTOS, Linux, or VxWorks, as well as anti-tamper technologies such as cryptography, secure communications, logging, and software deployment. We prefer experience with CI/CD tools and workflows such as GitLab, GitHub, Azure, Jenkins, or Nexus. We value experience working through the full SDLC in a structured software development environment. We prefer experience with automated testing, including unit and integration testing. We prefer familiarity with USAF nuclear surety standards such as DO-178C, AFMAN 91-119, and DO-330. We prefer experience with test frameworks, application/system verification, containers, Atlassian tools such as JIRA and Confluence, JAVA/JS, real-time processing, software safety under Mil-STD-882E, CMake, Agile methods, and Security+ certification. Responsibilities: We assign our software engineers to an Agile Scrum Team supporting the Command & Launch segment and the Command & Control Embedded Software Team. We support the full software development lifecycle, with emphasis on planning, requirements analysis, design, coding, and testing. We develop and maintain the technical software requirements baseline to stay aligned with program goals and objectives. We collaborate on agile software requirements development and help teammates grow in critical program efforts. We support technical execution for major program events across the program portfolio. We help address high-level systems challenges and contribute to delivering the overall technical plan within the integrated master schedule. We drive strategic initiatives involving tools, processes, and cross-segment technical reviews, bringing technical rigor to technical interchange meetings. We work with subject matter experts, analysts, architects, designers, system engineers, and specialty engineers to capture Sentinel node structure and behavior using SysML/UML frameworks. We apply engineering principles and applicable standards to design components and systems, including model-based systems engineering. We help prepare technical content for presentations to internal and external stakeholders. We maintain software design documentation and follow configuration management requirements. We support software requirement decomposition, derivation, and traceability. Technologies: Atlassian Azure Bash CI/CD Cryptography Confluence Embedded GitHub GitLab Support JIRA Java Jenkins Linux Nexus Python Security UML NodeJS Cloud C++ Hardware OOP SAP More: We are Halcyon Labs, a provider of solutions and software for complex Space, National Security, and Cyber missions across federal, international, and commercial customers. Our team is based in Colorado Springs, CO, and this role supports the Sentinel program in the Huntsville, AL area. This is a 100% on-site position at a contractor facility, with a standard 9/80 schedule that creates a three-day weekend every other week. We offer strong benefits, including generous PTO, flexible time off options where contractually allowed, 11 paid days off, a 401(k) match up to 4% with immediate vesting, tuition and certification support up to $12,000 annually, premium healthcare, a company-sponsored HSA, fully covered life insurance up to $50K, and access to an employee assistance program. We are committed to building a diverse workforce and are proud to be an equal opportunity and affirmative action employer. last updated 28 week of 2026