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Antares is building mass-producible, inherently safe, deployable microreactors for terrestrial, underwater, and space applications, with a mission to make clean energy abundant from Earth to the Asteroid Belt. The company has raised over $600M in venture capital and holds hundreds of millions in contracts with military services, NASA, and the Department of Energy. The team includes talent from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, and national laboratories.
As a Senior Test Engineer on the Mission Engineering team, you will develop and execute comprehensive tests demonstrating the performance and reliability of avionics, electrical subsystems, and thermal hardware for space nuclear power systems. You will own the complete testing lifecycle—from requirements and test setup design through execution, data analysis, and reporting—with emphasis on avionics verification, environmental qualification, and thermal performance.
Key responsibilities include:
• Develop verification plans for avionics, power electronics, sensors, and control systems; define test configurations, instrumentation, procedures, and pass/fail criteria tied to requirements.
• Design and execute avionics bench and integrated system tests covering electrical interfaces, command and telemetry, power sequencing, operating modes, fault detection, and recovery.
• Build automated test equipment and hardware-in-the-loop setups using programmable supplies, electronic loads, signal simulation, data acquisition, and flight-like hardware and software.
• Plan and execute environmental test campaigns including thermal vacuum (TVAC), thermal cycling, vibration, shock, and electromagnetic interference and compatibility (EMI/EMC), coordinating with external laboratories as needed.
• Verify electrical and functional performance before, during, and after environmental exposure; monitor telemetry and investigate intermittent faults, resets, and performance degradation.
• Develop thermal performance and thermal balance tests for avionics, power conversion equipment, and heat transport and rejection hardware; measure temperatures, heat loads, thermal interfaces, and heat rejection performance.
• Design and commission test setups including instrumentation, harnesses, chamber feedthroughs, thermal interfaces, and supporting fixtures; establish calibration, measurement uncertainty, and equipment protection controls.
• Analyze electrical and thermal data, compare results with predictions and requirements, and document findings to support design decisions and verification closure.
• Lead test readiness reviews, maintain test schedules, and coordinate hardware, personnel, and facility availability with program milestones.
• Lead root cause investigations and corrective action verification; maintain test configuration records and develop repeatable procedures for development, qualification, and acceptance testing.
You will work closely with electrical, firmware, thermal, mechanical, and systems engineers to evaluate hardware under representative operating and environmental conditions. Your work will span bench testing, integrated system testing, and campaigns involving thermal vacuum, vibration, shock, and electromagnetic interference and compatibility. You will help identify failures early and turn test results into design improvements.
REQUIREMENTS:
Basic Qualifications:
• Bachelor's degree in electrical, aerospace, mechanical, or another engineering discipline, or physics
• 5+ years of hands-on test engineering experience, including testing avionics, embedded electronics, or electrical subsystems
• Experience developing test procedures, building instrumented test setups, executing tests, and analyzing results
• Experience executing environmental or thermal tests, such as TVAC, thermal cycling, vibration, shock, or EMI/EMC
• Experience using electrical test equipment such as oscilloscopes, digital multimeters, programmable power supplies, and electronic loads
• Experience using Python, LabVIEW, MATLAB, or similar tools for test automation or data analysis
Preferred Skills and Experience:
• Experience qualifying spaceflight avionics or electrical hardware across multiple environmental test disciplines
• Experience testing power management and distribution systems, motor drives, inverters, or integrated power conversion equipment
• Experience with hardware-in-the-loop testing, fault injection, and debugging interactions between electronics, firmware, and system controls
• Experience with command and telemetry interfaces such as CAN, Ethernet, SPI, I2C, or RS-422
• Experience operating TVAC chambers and conducting thermal balance tests, including heater control, temperature instrumentation, and correlation with thermal models
• Experience performing EMI/EMC tests and troubleshooting grounding, bonding, shielding, conducted noise, or radiated emissions
• Experience testing heat pipes, heat exchangers, pumped fluid loops, radiators, or other thermal management hardware
• Experience translating customer and program environmental requirements into qualification and acceptance test campaigns
• Experience designing test harnesses, electrical schematics, and supporting fixtures, and coordinating test campaigns with outside facilities
Additional Requirements:
• Ability to work long hours and weekends as necessary to support critical milestones
• Ability to lift 50 lbs unassisted; standing, climbing, bending, grasping, sitting, pulling, pushing, stooping, stretching, and carrying may be required
• Must be a U.S. citizen, national, lawful permanent resident, Refugee, or Asylee, or eligible to obtain required ITAR authorizations from the U.S. Department of State
