Avionics Flight Test Engineer

Castelion; Torrance (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

Castelion is seeking a Development Test Engineer to own planning, execution, and analysis of tests that turn designs into flight-ready hardware. This hands-on role sits at the center of engineering, manufacturing, and operations, translating requirements into real-world validation through benchtop, environmental, subsystem, and vehicle-level tests.

You will design test hardware, write procedures, run tests, and feed results back into design with clear data and recommendations, while maintaining

Qualifications

• 3+ years of hands-on development and test experience.
• Experience planning and executing hardware tests from concept through report-out.
• Proficiency with test instrumentation and lab equipment (DAQs, oscilloscopes, power supplies, sensors).
• Ability to design and fabricate simple test fixtures and GSE (CAD + shop familiarity).
• Strong debugging, troubleshooting, and root-cause analysis skills.
• Willingness to support extended hours, weekends, travel, and on-site operations during critical test campaigns.

Responsibilities

• Own development and qualification testing for avionics, mechanisms, propulsion, structures, and subsystems.
• Design and build test fixtures, ground support equipment (GSE), and instrumentation for benchtop, environmental, and system-level tests.
• Author test plans, procedures, and reports aligned with program requirements and qualification intent.
• Execute vibration, thermal, shock, EMI/EMC, functional, and performance testing.
• Instrument hardware and vehicles with sensors (strain, temp, pressure, accel, current/voltage) and DAQ systems.
• Lead anomaly detection, root‑cause analysis, and corrective action closure.
• Partner closely with design engineering to feed test results back into rapid design iteration.
• Support integration operations, range testing, and flight test campaigns as needed.
• Maintain rigorous configuration control, data management, and test documentation.
• Improve test infrastructure, automation, and data quality to increase test cadence and learning velocity.

Skills

Test planning

Hardware testing

DAQ instrumentation

Debugging

CAD + GSE design

Cross-discipline collaboration

Willingness to travel

Education

Bachelor's degree in Mechanical, Electrical, Aerospace, or related engineering

Tools

DAQs

Oscilloscopes

Power supplies

Sensors

CAD

GSE

Job description

Castelion is seeking a Development Test Engineer to own planning, execution, and analysis of tests that turn designs into flight-ready hardware. This hands-on role sits at the center of engineering, manufacturing, and operations, translating requirements into real-world validation through benchtop, environmental, subsystem, and vehicle-level tests.

You will design test hardware, write procedures, run tests, and feed results back into design with clear data and recommendations, while maintaining