Staff HITL Engineer: End-to-End Spacecraft Test Automation

Relativity; Long Beach (CA); On-site; USD 150,000 - 190,000; Full time

Job summary

Relativity Space is seeking an experienced Test Engineer to design, build, and maintain end-to-end HITL test environments for integrated hardware, firmware, and software systems. You will drive automated test frameworks, CI pipelines, and calibrated test suites across hardware-in-the-loop setups to ensure robust validation ahead of flight.

You will own the test capability end-to-end, troubleshoot complex failures, and coordinate with propulsion, software, avionics, and manufacturing teams to

Qualifications

• Degree in computer, electrical, aerospace, or related engineering field.
• 7+ years of test engineering experience with automated hardware/software test frameworks.
• Strong software skills for test automation and validation pipelines.
• Experience building CI/regression infra with telemetry and pass/fail reporting.
• Hands-on hardware/embedded systems with Ethernet, UART, SPI
• Ability to own a complex test capability end-to-end and coordinate across teams

Responsibilities

• Design, build, and maintain the ISP HITL test environment end to end, including rack fabrication, avionics installation, breakout hardware, load emulation, harness fabrication and routing, and supporting test equipment.
• Build the simulation, data-acquisition, and control infrastructure that drives stimulus into the system, captures results, and allows flight software to be exercised against real and representative spacecraft hardware.
• Develop software fixturing, automated test frameworks, and CI/regression infrastructure that validate every software change on hardware with automated pass/fail adjudication, regression detection, and clear failure reporting.
• Debug integrated failures across flight software, avionics, interfaces, harnessing, timing, communications, and test infrastructure until root cause is understood and fed back to the responsible design teams.
• Validate timing-sensitive behavior and interfaces across sensors, actuators, payloads, avionics, and communication buses, including longer-duration and soak testing where appropriate.
• Establish dashboards, telemetry views, configuration control, and test procedures that make system health, test coverage, anomalies, and requirements traceability clear to the broader engineering team.
• Drive final integration and test of flight hardware leading into launch, coordinating with subsystem responsible engineers to ensure hardware and software are designed for integration and test from the beginning.

Skills

Test engineering

Automation

CI/CD pipelines

Python scripting

HITL testing

Embedded systems

Education

Engineering degree

Tools

CI tools

Test equipment

Job description

Relativity Space is seeking an experienced Test Engineer to design, build, and maintain end-to-end HITL test environments for integrated hardware, firmware, and software systems. You will drive automated test frameworks, CI pipelines, and calibrated test suites across hardware-in-the-loop setups to ensure robust validation ahead of flight.

You will own the test capability end-to-end, troubleshoot complex failures, and coordinate with propulsion, software, avionics, and manufacturing teams to