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Position:  Sr. Principal Software EngineerLocation:  Boulder, CO Auria is looking to hire a Sr. Principal Software Engineer to support the Ballistic Missile Defense System (BMDS) Overhead Persistent Infrared (OPIR) Architecture (BOA) program. BOA is the Missile Defense Agency’s next-generation Overhead Persistent Infrared (OPIR) architecture providing automated, real-time missile detection, tracking, and threat classification with advanced data fusion to deliver precise, high-fidelity 3D intelligence.  The position is located on-site in Boulder, CO.  As a Sr. Principal Software Engineer, you will be responsible for the design, development, documentation, testing, deployment, and debugging of software applications. This includes researching, identifying, and implementing solutions to complex, multi-disciplinary software problems and providing technical leadership across the team. WHAT YOU CAN EXPECT TO DO: * Implement new features that integrate smoothly with pre-existing systems. * Develop software using Agile methodologies, participating in and often leading team ceremonies. * Utilize Jira to document and track bugs, enhancements, and user stories. * Provide software engineering support for multi-language (C/C++, Python, and Java) and complex software systems. * Enhance usability, performance, and maintainability of systems through analysis, refactoring, and defect resolution. * Coordinate, integrate, and resolve defects in conjunction with the test team. * Mentor junior and mid-level engineers, providing technical guidance and code reviews. * Contribute to and influence the technical direction and architecture of assigned software components. WHAT THE TEAM REQUIRES: * Education/Experience (Software Engineer 4 / Sr. Principal Software Engineer): Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline from an accredited university and 9 years of related experience; OR a Master’s degree in a STEM discipline and 7 years of related experience; OR a PhD in a STEM discipline and 4 years of related experience. * An active in-scope U.S. Government DoD Secret security clearance is required to start, with the ability to obtain and maintain a Top Secret/SCI (TS/SCI) security clearance. * Experience working in a Linux environment. * Proficiency in C/C++ and Python. * Experience with Object-Oriented Programming (OOP). * Experience with OOP design patterns and modern data structures. * Demonstrated software development and troubleshooting experience in a team environment. * Experience with legacy software and modernization efforts. * Ability and willingness to travel up to 10% to support business needs. * Mission-Driven Professional: Collaborative contributor motivated by the opportunity to develop cutting-edge solutions that protect and serve both the nation and the world.  WHAT THE TEAM PREFERS:  * Experience with configuration management software (e.g., Git, Conan, CMake, Nexus, etc.). * Experience with Java and shell scripting languages (e.g., Bash). * Experience with Agile development practices. * Experience using the Atlassian Tool Suite (e.g., Jira, Confluence, Bitbucket). * Demonstrated technical leadership experience (task lead, feature lead, or mentoring). * Experience across the full software development lifecycle (requirements, design, implementation, integration, test, deployment, and sustainment). PAY TRANSPARENCY: The salary offered will be based on the selected candidate’s qualifications - skills, education & experience - and the position level. $155,000 - $180,000 APPLICATION DEADLINE: October 22, 2026 THE AURIA TEAM: Auria is a provider of solutions and software in support of complex Space, National Security, and Cyber missions of federal, international, and commercial customers. Headquartered in Colorado Springs, CO our success is built on the excellence of diverse teams advancing innovative systems and operational software to strengthen our customers’ missions. With a distinguished track record and a spirit of relentless pursuit, and R&D, we set the pace for progress and execute every mission with the utmost precision.   Why You’ll Love Working at Auria We believe our team does their best work when they are well-supported, financially secure, and have the freedom to balance life outside of the office. Time for What Matters * Generous & Growing PTO: Start with a substantial paid time off package that increases every year you’re with us. * True Flexibility: Contract permitting, use Flex Time to work in a way that fits your life, not just your 8-to-5. * 11 Paid Days Off: Enjoy 6 fixed company holidays plus 5 Floating Holidays to use whenever you choose. Invested in Your Future * 401(k) Match—Yours to Keep Instantly: We match up to 4% of your contributions. Both your contributions and the company match are yours from day one with no vesting wait-period. * Industry-Leading Education Support: Level up with up to $12,000 annually for tuition and certifications. We don't just hire talent; we grow it. Health & Peace of Mind * Premium Healthcare, Lower Costs: High-quality medical plans paired with a Company-Sponsored HSA to help you save for the future. * Fully Covered Life Insurance: Breathe easy with life insurance up to $50K provided at zero cost to you. * Holistic Support: Access our Employee Assistance Program (EAP) for mental health, financial coaching, and more. ...and that’s just the beginning!  Auria is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action-Employer, making decisions without regard to race, color, religion, sex, sexual orientation, gender identity, genetic information, marital status, national origin, age, veteran status, disability, or any other protected class.   Pay Range: $155,000 - $180,000 per year