As an Lead Avionics Test Systems Engineer, Ground Systems you will: Lead design, development, build, and integrate critical ground systems that support engine test, vehicle integration, and launch operations Collaborate cross-functionally with vehicle, propulsion, avionics, software, test, and operations teams to deliver robust, scalable systems on tight timelines Oversee fabrication, bring-up, and validation of test systems, including electrical testing, calibration, and functional checks Author interface control documents (ICDs) and engineering release drawings to ensure tight alignment between electrical ground support equipment and flight/avionics hardware Work closely with safety, operations, and launch teams to ensure systems are compliant and operable under high-stakes conditions. Any unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role.