Avionics Engineer

The role

You will define and build electrical and electronic hardware for autonomous cargo aircraft, mission systems, and ground control stations. This includes power systems, flight computers, sensors, and datalinks from block diagram to flight test.

What you will do

• Contribute to the electrical and avionics architecture of the aircraft, mission systems, and ground control station
• Design and integrate power generation, storage, and distribution, and maintain the electrical load analysis
• Select and integrate flight computers, mission computers, actuators, sensors, radios, and datalinks
• Produce system schematics, interface control documents, and wire harness drawings
• Support harness fabrication, installation, and checkout on the aircraft
• Configure and troubleshoot data buses (CAN, ARINC 429, RS-232/485, Ethernet)
• Design grounding, bonding, and shielding to control EMI/EMC
• Specify and install flight test instrumentation and data acquisition hardware
• Build and maintain bench and hardware-in-the-loop test setups
• Write and run acceptance and functional test procedures for avionics hardware

Required qualifications

• B.S. in electrical engineering, aerospace engineering, or a related field, or equivalent experience
• 2+ years designing or integrating electrical and electronic systems on vehicles (aircraft, UAS, spacecraft, or automotive)
• Proficiency with schematic capture or harness design tools such as Altium, AutoCAD Electrical, or Capital
• Hands-on experience debugging hardware with multimeters, oscilloscopes, and logic analyzers
• Working knowledge of power distribution, grounding, and common vehicle data buses

Nice to have

• Avionics experience on crewed or uncrewed aircraft
• Wire harness design and fabrication to aerospace standards such as AS50881
• Familiarity with DO-160, DO-254, MIL-STD-704, or MIL-STD-461
• Experience integrating antennas, GPS, radios, or datalinks
• Experience with electromechanical actuators or motor controllers
• Experience with flight test instrumentation and data acquisition systems
• PCB design for breakout boards or signal conditioning
• Python for test automation and data analysis
• Private pilot certificate or Part 107 certificate

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 capable of carrying two tons of payload. The company is headquartered in the San Francisco Bay Area with locations in Washington DC, Oregon, and Maine.