Avionics Engineer

Poseidon Aerospace

California

On-site

USD 120,000 - 190,000

Full time

3 days ago

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Benefits offered by this job

Equity

Relocation support

Health benefits

Retirement matching

Flexible PTO

Free meals and snacks

AI tools

Job summary

Poseidon Aerospace in the San Francisco Bay Area is seeking an Avionics Engineer to define and build the electrical and mission systems for our autonomous cargo aircraft. You will take hardware from block diagram to bench to aircraft, and support it through ground and flight test.

The role requires hands-on experience with power distribution, flight computers, datalinks, and data buses, plus willingness to travel to flight test sites and collaborate with flight software, GNC, airframe, and

Qualifications

B.S. in electrical or aerospace engineering or related field or equivalent experience.
2+ years designing or integrating electrical/electronic systems on vehicles.
Proficiency with schematic capture or harness design tools such as Altium, AutoCAD Electrical, or Capital.

Responsibilities

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.
Troubleshoot hardware on the aircraft during ground and flight test, including travel to our flight test site.
Work with flight software, GNC, airframe, propulsion, and flight test on interfaces and installation.

Skills

Electrical engineering

Aerospace experience

Schematic capture tools

Hardware troubleshooting

Power distribution knowledge

Education

B.S. in electrical or aerospace engineering or related field

Tools

Altium

AutoCAD Electrical

Capital

Job description

About Poseidon Aerospace:

Poseidon Aerospace is reimagining how the world moves goods. We build and operate full-size autonomous cargo aircraft - capable of carrying two tons of payload over a thousand nautical miles. From remote communities to contested logistics operations, our platforms unlock a new cost curve for air freight, making it faster, cheaper, and accessible anywhere it's needed. Headquartered in the San Francisco Bay Area with locations in Washington DC, Oregon, and Maine; we're building something consequential.

About the role

Avionics is the electrical and electronic hardware on our cargo aircraft, its mission systems, and the ground control station that operates it. As an Avionics Engineer you will help define that architecture and then build it: power systems, flight and mission computers, actuators, sensors, datalinks, wire harnesses, and instrumentation. You will take hardware from block diagram to bench to aircraft, and support it through ground and flight test.

Responsibilities

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
Troubleshoot hardware on the aircraft during ground and flight test, including travel to our flight test site
Work with flight software, GNC, airframe, propulsion, and flight test on interfaces and installation

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

Preferred Qualifications

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

Why this role

Avionics connects every system on the aircraft: power, propulsion, flight controls, mission systems, and the link to the ground. You will design hardware, build it, install it, and see it fly on an aircraft that carries two tons.

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