C++ Senior​/Senior Software Engineer

Sci Tec, a wholly owned subsidiary of Firefly Aerospace, is a dynamic non‑traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty‑five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world‑class data exploitation capabilities supporting missile defense; intelligence, surveillance & reconnaissance;

space domain awareness; and aircraft survivability missions.

SCI works exclusively on U.S. government contracts that require U.S. citizenship for all employees. Applicants who do not meet this requirement will not be considered.

Sci Tec is seeking a senior C++ software developer to support programs delivering Missile Defense Solution software. You will work within a fast‑paced environment on a team delivering end‑to‑end software processing of Overhead Persistent Infra Red (OPIR) sensor data for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence. The role focuses on hands‑on algorithm development and optimization within a large, production C++ codebase running on Linux systems.

• Design, implement, and maintain C++ software components supporting remote sensor data processing
• Develop and optimize high‑throughput algorithms for image analysis, detection, and tracking
• Improve performance, scalability, and reliability of existing software systems
• Apply strong understanding of data structures, algorithms, and performance trade‑offs
• Write clean, maintainable, and well‑documented C++ code using modern language features
• Support integration, testing, and debugging in Linux environments
• Work closely with customers to maintain high quality software through all stages of the Software Development Cycle as a product owner
• Translate high‑level software requirements into implementable solutions and lead a small team of developers in an Agile environment
• Participate in code reviews and mentor team members
• Support documentation, knowledge sharing, and clear communication across the organization

• Bachelor’s degree in computer science, physical science, mathematics, or engineering
• 5+ years of professional C++ software development experience
• 3+ years of professional experience working in Linux environments
• Experience building reusable component libraries or design systems
• Solid understanding of software engineering best practices and commitment to high‑quality code
• Strong knowledge of data structures and algorithms
• Demonstrated performance optimization skills for data‑intensive or compute‑intensive systems
• Ability to work in‑person in Boulder, CO office location
• Ability to obtain and maintain a DoD security clearance
• Effective communication skills and attention to detail

• Advanced degree in computer science, physical science, mathematics, or engineering
• Experience using C++17, C++20, or C++23 features
• GPU programming experience (e.g., CUDA, OpenCL, or similar)
• Strong understanding of object‑oriented design principles, including SOLID patterns
• Professional experience with Agile software development processes and tools
• Experience working with remote sensing data (OPIR, EO/IR, SAR, spectral, RF)
• Fluency in Python, Rust, Java, or MATLAB
• Current DoD security clearance
• Experience with software prototyping, development, and integration within government frameworks
• Experience with Jira, Confluence, and Scrum

• 4% Safe Harbor 401(k) match
• 100% company‑paid HSA medical insurance, with two buy‑up options
• 80% company‑paid dental insurance
• 100% company‑paid vision insurance
• 100% company‑paid life insurance
• 100% company‑paid long‑term disability insurance
• Short‑term disability insurance
• Annual profit‑sharing plan
• Discretionary performance bonus
• Paid parental leave
• Generous paid time off, including holidays, vacation, and sick pay
• Flexible work hours

The pay range for this position is $125,000 – $162,000 per year.

Sci Tec is proud to be an Equal Opportunity employer. VET/Disabled.