Senior Avionics Test Engineer - Lead HIL & Flight Systems

Castelion seeks a Lead Avionics Test Engineer to own the vision, architecture, and execution of our avionics test organization as we move from prototype to production and flight operations. You will set technical direction, mentor engineers, and drive test infrastructure, automated test equipment, and validation across power electronics, digital interfaces, RF assemblies, and flight avionics. This role blends hands-on lab work with systems-level reasoning and close collaboration with electrical,