Senior Avionics Test Engineer — RF, Power & Automation

Castelion Corporation; Torrance (CA); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Castelion is seeking a Senior Avionics Test Engineer to lead the test strategy for avionics and control systems from prototype to production. You will own test requirements, develop ATE, and define performance envelopes across power electronics, RF, and motion control, collaborating with electrical, controls, software, and mechanical teams.

The role blends hands-on lab work with system-level reasoning and requires experience in instrumented testing, automation, and cross-functional leadership.

Qualifications

• B.S./M.S. in Electrical, Mechanical, Mechatronics, Aerospace, or related field.
• Experience testing high-power subsystems, high-speed digital interfaces, actuators, or RF hardware.
• Hands-on experience developing automated test equipment using instruments (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

High-power subsystems testing

Automated test equipment development

Embedded control systems familiarity

Instrumentation control & data acquist

Independent work & cross-functional LE

Education

Bachelor/Master in Electrical, Mechanical, Mechatronics, Aerospace or related

Tools

Oscilloscopes

DMMs

Power supplies

Loads

Switch matrices

Network analyzers

SCPI

VISA

PyVISA

Job description

Castelion is seeking a Senior Avionics Test Engineer to lead the test strategy for avionics and control systems from prototype to production. You will own test requirements, develop ATE, and define performance envelopes across power electronics, RF, and motion control, collaborating with electrical, controls, software, and mechanical teams.

The role blends hands-on lab work with system-level reasoning and requires experience in instrumented testing, automation, and cross-functional leadership.