Senior C++ 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.

Important Notice: Sci Tec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered.

Sci Tec has an immediate opportunity for a talented engineer to support our programs delivering Next-Generation Missile Warning software. This is a unique opportunity to join a small business delivering core capabilities for National defense. You will work within a fast-paced 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.

We are seeking a Senior C++ Software Developer to design, implement, and optimize high-performance software supporting remote sensor data exploitation and analysis. This role focuses on hands-on algorithm development and optimization within a large, production C++ codebase running on Linux systems.

The ideal candidate is a strong individual contributor with deep C++ expertise, solid systems knowledge, and experience working on performance-critical software in a collaborative, Agile environment.

• 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
• Participate in code reviews, technical discussions, and design decisions
• Collaborate with algorithm developers, systems engineers, and integration teams
• Work effectively within an Agile software development process
• Support integration, testing, and debugging in Linux environments
• Communicate technical concepts clearly to team members and stakeholders
• Perform other duties as assigned

• Bachelor’s degree in Computer Science, Engineering, Mathematics, Physical Sciences, or a related technical field

• 5+ years of professional experience developing software in C++
• 3+ years of professional experience working in Linux environments
• Strong knowledge of data structures and algorithms
• Demonstrated performance optimization skills for data-intensive or compute-intensive systems
• Experience writing production-quality, maintainable C++ code
• Strong verbal and written communication skills
• Detail-oriented with a focus on correctness and reliability
• Ability to work full-time, in person at the Boulder, CO office
• Ability to obtain and maintain a DoD security clearance

Candidates who have any of the following skills will be preferred:

• Experience with modern C++ standards (C++17, C++20, or newer)
• Experience with GPU programming (e.g., CUDA, OpenCL, or similar)
• Strong understanding of object-oriented design principles, including SOLID patterns
• Experience working with remote sensing data (OPIR, EO/IR, SAR, Spectral, RF, or similar)
• Advanced degree in Computer Science, Engineering, Mathematics, or Physical Sciences
• Fluency in one or more additional languages such as Python, Rust, or MATLAB
• Professional experience working in Agile…