Senior Avionics Test Engineer: Hardware Validation

Castelion; Torrance (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

Castelion is seeking a Senior Avionics Test Engineer to architect and execute the complete hardware testing suite, moving avionics and control systems from prototype to production. You will own test requirements, build automated test stations, and collaborate with electrical, controls, software, and mechanical teams to ensure robust qualification and performance.

You will blend hands-on lab work with systems-level thinking, leading cross-functional test integration in a fast-paced environment.

Qualifications

• B.S./M.S. in Electrical, Mechanical, Mechatronics, Aerospace, or related.
• Experience testing high-power subsystems, high-speed digital interfaces, actuators, or RF hardware.
• Hands-on experience developing automated test equipment using instruments such as oscilloscopes, DMMs, power supplies, loads, switch matrices, network analyzers.
• Familiarity with embedded control systems and interfaces (CAN, RS-422/485, SPI, Ethernet).
• Experience with instrumentation control and data acquisition (Python, C++, protobufs, scripting).
• Ability to work independently and lead cross-functional test integration.

Responsibilities

• Develop and execute test plans at component, subassembly, and integrated system levels.
• Design and build test fixtures, HIL environments, and automated test rigs.
• Validate hardware performance across electrical, digital, mechanical, and RF metrics.
• Instrument and log tests to ensure precision and traceability.
• Lead failure analysis and root-cause investigations.
• Support hardware teams by feeding test results back into design cycles.
• Drive qualification and environmental test campaigns (thermal, vibe, EMI).
• Deploy and validate automated test equipment for boards and sub-systems.

Skills

Independent work

Cross-functional collaboration

Test integration

Lab automation

Education

B.S./M.S. in Electrical, Mechanical, Mechatronics, Aerospace, or related

Tools

Oscilloscopes

DMMs

Power supplies

Loads

Switch matrices

Network analyzers

SCPI / VISA

PyVISA

Python / C++

Job description

Castelion is seeking a Senior Avionics Test Engineer to architect and execute the complete hardware testing suite, moving avionics and control systems from prototype to production. You will own test requirements, build automated test stations, and collaborate with electrical, controls, software, and mechanical teams to ensure robust qualification and performance.

You will blend hands-on lab work with systems-level thinking, leading cross-functional test integration in a fast-paced environment.