Senior Avionics Test Engineer

Castelion Corporation•Rio Rancho, NM

About The Position

Castelion is seeking a Senior Avionics Test Engineer to architect and execute the hardware test capabilities required to advance avionics and control systems from prototype to production. The engineer will own test requirements, automated test equipment (ATE) development, integration, validation, and performance characterization across power electronics, digital interfaces, RF assemblies, motion control, and flight avionics. The role involves designing fixtures, building automated test stations, supporting design verification and qualification, and defining performance envelopes for components, circuit cards, and integrated subsystems. It combines hands-on laboratory work with systems-level reasoning and collaboration with electrical, controls, software, and mechanical engineering teams. The position may require access to classified information or restricted U.S. Government sites, systems, or information. If applicable, employment may be contingent on obtaining and maintaining required government clearances or authorizations and meeting citizenship or other eligibility requirements. The role also requires access to export-controlled information, and hiring is contingent on being able to access applicable information without additional export licensing.

Requirements

Bachelor’s or master’s degree in Electrical, Mechanical, Mechatronics, Aerospace, or a related field.
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, and network analyzers.
Familiarity with embedded control systems and interfaces such as CAN, RS-422/485, SPI, and Ethernet.
Experience with instrumentation control and data acquisition using Python, C++, protobufs, or scripting.
Ability to work independently and lead cross-functional test integration.
Ability to access applicable export-controlled information without additional export licensing.

Nice To Haves

Experience with RF testing fundamentals or more advanced knowledge of radar architecture.
Experience developing test-automation software for digital, power, and RF electronics; Python is preferred.
Experience controlling test instrumentation using SCPI, VISA, or PyVISA commands.
Experience developing GUIs or dashboards.
Experience writing custom scripts for data analysis and database creation.
Experience writing software for environmental chambers and/or RF chambers.
Exposure to flight-like test environments, including environmental stress screening (ESS).
Experience with fault injection, failure-mode testing, and reliability qualification for mission-critical systems.
Working knowledge of C/C++ or Python for custom test tooling or embedded-systems debugging.
Background supporting flight test or launch operations.

Responsibilities

Develop and execute test plans at component, subassembly, and integrated-system levels.
Design and build test fixtures, hardware-in-the-loop (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.
Feed test results back to hardware teams to inform design cycles.
Drive qualification and environmental test campaigns, including thermal, vibration, and EMI testing.
Deploy and validate automated test equipment for boards and subsystems.