Senior Avionics Test Engineer — Build Flight‑Ready Systems

Cantos Ventures; Albuquerque (NM); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Equity

Paid time off

Holidays

Health benefits

Parental leave

Fitness stipend

Onsite EV charging

Catered meals

Job summary

Castelion is moving incredibly fast to develop and deliver advanced defense systems, giving you a chance to influence critical decisions and see immediate impact. This Senior Avionics Test Engineer role blends hands‑on lab work with systems thinking across power electronics, RF assemblies, and flight avionics.

You will own test requirements, develop automated equipment, and collaborate with electrical, controls, software, and mechanical teams to push prototypes toward production.

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.

Job description

Castelion is moving incredibly fast to develop and deliver advanced defense systems, giving you a chance to influence critical decisions and see immediate impact. This Senior Avionics Test Engineer role blends hands‑on lab work with systems thinking across power electronics, RF assemblies, and flight avionics.

You will own test requirements, develop automated equipment, and collaborate with electrical, controls, software, and mechanical teams to push prototypes toward production.