Simulation, Test and Validation Engineer

The role

You will build and run hardware-in-the-loop benches, simulation environments, and automated validators. You will also design and run environmental and durability tests on aircraft hardware.

What you will do

• Bring up and maintain hardware-in-the-loop benches with flight computers, actuators, sensors, and power hardware in the loop
• Maintain the software-in-the-loop environment and the real-time simulation that drives the benches
• Integrate vehicle, sensor, and actuator models from GNC and flight sciences into the simulation
• Write validators: automated checks that evaluate simulation, bench, and flight data against requirements
• Build automated regression testing that runs each flight software release through simulation and hardware-in-the-loop
• Develop fault injection for sensor, actuator, data bus, and power failures
• Build data pipelines and analysis tooling for test and flight data
• Design and run environmental and durability tests on aircraft hardware, including vibration, thermal, and ingress
• Integrate instrumentation and data acquisition on test rigs
• Write test plans and procedures from requirements and failure mode analyses, and report results

Required qualifications

• B.S. in electrical, mechanical, aerospace, or computer engineering, or a related field, or equivalent experience
• 2+ years testing complex electromechanical or embedded systems
• Proficiency in Python and working knowledge of C or C++
• Experience building or operating hardware-in-the-loop, software-in-the-loop, or automated test systems
• Hands-on electrical debugging skills and familiarity with common vehicle data buses

Nice to have

• Test experience on aircraft, UAS, spacecraft, or automotive systems
• Experience with real-time simulation platforms such as Speedgoat, dSPACE, or NI
• Experience with environmental testing to DO-160 or MIL-STD-810
• Experience with actuators, motor controllers, or power systems
• Experience with continuous integration for embedded software
• Familiarity with FMEA and reliability analysis
• Experience analyzing flight or vehicle test data

Benefits

• Competitive salary
• Meaningful early-stage equity
• Relocation support if applicable
• Employee Health Benefit Plans
• 6% Retirement matching
• Flexible PTO
• Free lunches, snacks, and a stocked fridge at our offices
• AI tools and subscriptions

About the company

Poseidon Aerospace builds and operates full-size autonomous cargo aircraft. The company is headquartered in the San Francisco Bay Area with locations in Washington DC, Oregon, and Maine.