Sr Avionics Test Systems Engineer, Ground Systems

Relativity Space•Long Beach, CA

4d•$148,000 - $222,000

About The Position

Relativity Space is seeking a Sr Avionics Test Systems Engineer, Ground Systems to support vehicle ground test support systems. The role involves leading the development of robust electrical and mechanical systems for vehicle test, integration, and launch in challenging environments. The engineer will collaborate cross-functionally with avionics, propulsion, structures, test, and software teams to ensure ground systems are reliable, flexible, and safe. This position is ideal for someone who thrives on high ownership, fast iteration, and seeing their systems go from concept to launchpad.

Requirements

Undergraduate or graduate degree (BS/MS/PhD) in Electrical Engineering, Computer Engineering, Mechanical Engineering, Aerospace Engineering, or a related field
5+ years of hands-on experience designing and deploying test systems or electrical integration systems in aerospace or high-reliability environments
Strong knowledge of electrical signal integrity, grounding schemes, shielding, and power systems
Hands-on experience designing, building, and commissioning electromechanical ground systems
Familiarity with common communication protocols (e.g., Ethernet, RS-422, CAN, MIL-STD-1553) and ground systems standards (ASME, API, and NASA/AF)
Familiarity with data acquisition and control system platforms such as NI, Beckhoff, or similar

Nice To Haves

Experience with CAD tools such as NX and Teamcenter
Experience with wire harness design tools such as Zuken
Familiarity with a PCB design modeling tool such as Altium Designer
Familiarity with scripting languages such as Python or MATLAB for data acquisition/recording and analysis
Familiarity with common communication protocols such as Ethernet, CAN, UART, SPI, etc
Familiarity with data acquisition and control system platforms such as NI, Beckhoff, or similar

Responsibilities

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