Senior Engineer / Principal Software Engineer

Radiance Technologies, a rapidly growing employee-owned company, is seeking a seasoned Senior/Principal Software Engineer to lead the design, development, integration, and verification of software for advanced missile and guided-projectile systems. In this role, you will be the bridge between flight dynamics theory and real-time embedded execution, owning the software architecture for Guidance, Navigation, and Control (GNC), managing complex Hardware-in-the-Loop (HWIL) simulation labs, and supporting end-to-end flight test campaigns. GNC & Embedded Software Development Design, implement, integrate, and verify mission-critical missile software, focusing heavily on GNC algorithms, autopilot loops, and flight control laws. Translate complex mathematical flight dynamics models into high-performance, deterministic, real-time code. MATLAB/Simulink auto-coding) to transition control algorithms seamlessly into target hardware.# Hardware-in-the-Loop (HWIL) & Simulation Management Architect, maintain, and expand HWIL test environments, integrating flight computers, inertial measurement units (IMUs), actuation systems, and sensor suites. Plan and execute rigorous HWIL test campaigns to validate software performance against simulated aerodynamic threats, target profiles, and environmental disturbances. Troubleshoot complex, multi-domain system failures spanning software logic, digital/analog signal interfaces, and physical hardware behavior.# Verification, Validation, & Accreditation (VV&A) Lead VV&A activities for simulation environments, software-only test beds, and HWIL facilities to ensure high fidelity and traceability to system requirements. Develop automated test scripts and regression suites to support continuous integration and rapid deployment of software updates.# Pre-Flight Support & Mission Planning Collaborate with systems engineering and flight test teams to execute pre-flight activities, including missile flyout predictions, trajectory simulations, and safety analysis. Define and optimize Restricted Operating Zones (ROZ), range safety limits, and mission scripts for live-fire or captive-carry tests.# Field Deployment & Discrepancy Resolution Apply deep flight-dynamics and systems-level knowledge to root-cause analysis, anomaly investigation, and discrepancy resolution during test execution. Deploy to remote test ranges, proving grounds, or integration facilities as required to support pre-test checkouts, launch operations, and post-flight data reduction.10+ years of professional software engineering experience specifically within aerospace, defense, or missile systems.~ D. in Computer Science, Aerospace Engineering, Electrical Engineering, or a related technical discipline.~ Core Programming Languages: Advanced proficiency in C and C++ for real-time embedded environments; familiarity with Python or MATLAB for scripting and analysis.~ Real-Time Operating Systems (RTOS): Experience developing safety-critical software on RTOS platforms (e.g., VxWorks, Linux with PREEMPT_RT).~ HWIL & Lab Equipment: Desired Qualifications Experience with safety-critical software development standards (e.g., Familiarity with Agile development workflows, configuration management tools (Git, SVN), and requirements traceability tools (DOORS, Jira).~ Hands-on experience with sensor simulation or seeker-in-the-loop (SIL) testing. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status. Our growth is creating great opportunities! Employee-ownership benefits both our customers and workforce, and ensures that Radiance doesn't have to answer to stockholders or be driven by quarterly earnings reports. Thus, Radiance will always prioritize enhancing our customer's mission over expanding our bottom line. We are singularly focused on providing our customers with game-changing solutions to their most challenging requirements. This is only possible because employee-ownership attracts the highest quality employees, empowers them to identify capability enhancements, and provides them with the freedom to take risks to deliver high-quality solutions. Employee-ownership also provides tangible and long-term financial security for our people and their families. Radiance's culture is driven by our commitment to our customers and our employee-owners. We believe building trust and credibility with our customers leads to long-term results. We invest in a superior technical workforce where leaders are developed, innovation is encouraged, and achievements are recognized. We seek innovative ways to improve, experiment, take risks, foster collaboration, and empower our employee-owners. We relentlessly pursue operating excellence by innovating, improving our processes, and reducing waste. Our values dictate how we interact with each other and our customers, partners, and suppliers. Honesty, trust, humanity, alignment, and value creation require that we treat our employees with dignity and respect and provide them with fair compensation and equal employment opportunity. We believe in connecting with our communities and have a responsibility to be good corporate citizens, and we believe in sustainable business practices, which include supporting the environment and the communities in which we work.#