Simulation Engineer

Radiance Technologies, a 100% employee-owned company, is seeking a technically strong and highly collaborative Simulation Engineer to support a U.S. Government space program supporting NASA’s Orion Multi-Purpose Crew Vehicle (MPCV) and Artemis missions.

This position is ideal for an engineer with strong software development and simulation experience who enjoys solving complex problems in a collaborative, mission-focused environment. The successful candidate will support the development, integration, testing, and sustainment of high-fidelity spacecraft simulation capabilities supporting Orion mission operations and testing. The role requires hands-on experience with C++ and Python, real-time 6-DoF simulation, Linux development environments, the full software development lifecycle, and large-scale software systems. Experience with spacecraft systems, aerospace engineering concepts, Orion simulation environments, docking operations, or spacecraft test laboratories is highly desirable. This is a full-time, on-site position in Littleton, Colorado or Houston, Texas. Remote work is not available. The anticipated compensation or this position is $110,000 - $135,000 based on a full-time schedule. Your compensation will vary depending on your job-related skills, experience, and education. Responsibilities · Perform docking ground software systems engineering supporting Orion MPCV and Artemis 3 spacecraft missions. · Perform docking sim software development, unit/functional testing, and verification using Agile methodologies. · Develop, integrate, debug, and maintain simulation software using C++ and Python · Support simulation software design, software production, integration, and verification activities · Develop and execute unit, functional, integration, and system-level tests for simulation software · Develop test procedures, test cases, dry runs, and other verification artifacts · Support real-time six-degree-of-freedom (6-DoF) 6-DoF simulation development and integration · Support integration with simulation rigs, test environments, spacecraft test laboratories, and associated ground systems · Support requirements traceability between software changes, requirements, and verification activities · Develop or enhance user interfaces and tools that enable testers and engineers to monitor, execute, and report simulation activities · Support configuration management and software version control using tools such as Perforce · Collaborate with systems engineers, software engineers, test engineers, spacecraft engineers, and government customers to resolve technical issues · Support additional engineering activities and special studies as directed by the technical lead or customer Required Experience & Qualifications · Bachelor's degree in Engineering, Computer Science, Mathematics, Physical Sciences, or a related technical field · Minimum of five (5) years of experience supporting spacecraft programs · U.S. Citizenship required · Experience developing software in C++ and Python · Experience across the full software development lifecycle, including design, development, integration, testing, debugging, and maintenance · Experience with real-time 6-DoF simulation · Extensive experience debugging complex software and implementing sound software engineering practices within large-scale systems · Extensive experience working in a Linux development environment · Experience with Perforce or a comparable software configuration/version-control system · Experience applying aerospace engineering concepts including areas such as orbital dynamics, spacecraft dynamics, fluid mechanics, or related disciplines · Experience working within an Agile development methodology · Strong communication and collaboration skills with the ability to work effectively with engineers, technical leads, government customers, and other stakeholders · Self-motivated individual who actively and independently seeks opportunities to solve problems and improve software and engineering processes · Experience with IBM DOORS or similar requirements management tools Desired Experience & Qualifications: · Experience with MATLAB/Simulink The Radiance Difference Radiance is a 100% employee-owned company, and we believe our people are our greatest asset. We are looking for engineers who want to be part of a team—not simply fill a position. Our most successful engineers combine technical excellence with strong relationships. They take pride in solving difficult problems, but they also understand that great engineering comes from collaboration, trust, communication, and a willingness to help the people around them succeed. If you are a technically capable systems engineer who enjoys working directly with customers, building strong professional relationships, mentoring teammates, and contributing to a positive engineering culture, we want to hear from you. Radiance Technologies is an Equal Opportunity Employer. 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.