Avionics Engineer, Autonomous Cargo Aircraft

Poseidon Aerospace; Berkeley (CA); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Equity (meaningful early-stage)

Relocation support

Health benefits

6% Retirement matching

Flexible PTO

Free lunches and stocked fridge

AI tools and subscriptions

Job summary

Poseidon Aerospace in the San Francisco Bay Area is seeking an Avionics Engineer to design, integrate, and validate avionics systems powering our autonomous cargo aircraft.

You will work across flight computers, sensors, and data buses, develop wiring diagrams and ICDs, and support HIL testing to ensure robust, reliable flight software and hardware integration. Strong cross-team collaboration is essential.

Qualifications

• Experience integrating complex electronic systems on vehicles or aircraft.
• Proficiency with schematic capture and harness design tools like Altium/AutoCAD Electrical.
• Hands-on experience with lab equipment for debugging hardware.
• Knowledge of how sensor rate changes affect flight controllers.

Responsibilities

• Own the integration of flight computers, sensors, actuators, and communication suites into a cohesive aircraft system.
• Develop comprehensive wiring diagrams, interconnect drawings (ICDs), and system schematics.
• Configure and troubleshoot data bus architectures (CAN, ARINC 429, RS-232/485, Ethernet).
• Support electrical load analysis (ELA) and ensure clean power distribution and EMI/EMC mitigation across the airframe.
• Assist in bench-to-bird processes, including building test harnesses, breadboarding circuits, and performing HIL testing.
• Act as the technical glue between the software team, the mechanical structures team, and the flight test pilots.
• Get hands-on with the aircraft to diagnose gremlins during ground and flight testing, using oscilloscopes and data logs.

Skills

System integration

Schematic capture

Lab equipment debugging

Sensor data analysis

Python

C/C++

Cross-functional communication

Tools

Altium

AutoCAD Electrical

Capital

Job description

Poseidon Aerospace in the San Francisco Bay Area is seeking an Avionics Engineer to design, integrate, and validate avionics systems powering our autonomous cargo aircraft.

You will work across flight computers, sensors, and data buses, develop wiring diagrams and ICDs, and support HIL testing to ensure robust, reliable flight software and hardware integration. Strong cross-team collaboration is essential.