Sr Avionics Test Systems Engineer, Ground Systems

Relativity Space • Long Beach, CA

4d

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 designing, building, and deploying test systems that interface directly with flight hardware. The engineer will lead the development of robust electrical and mechanical systems for vehicle test, integration, and launch in challenging environments. This position requires cross-functional collaboration with avionics, propulsion, structures, test, and software teams to ensure ground systems are reliable, flexible, and safe. The ideal candidate 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

Benefits

• Competitive salary and equity
• Generous PTO and sick leave policy
• Parental leave
• Annual learning and development stipend

What This Job Offers

• Job Type: Full-time
• Career Level: Senior