Avionics Hardware Engineer (All Levels)

 About Castelion

Castelion is redefining defense development through rapid iteration, aggressive testing, and modern commercial manufacturing at scale. We design, build, and test next-generation long-range strike weapon systems to give the United States and its Allies a decisive advantage and deter future conflicts.

Avionics Hardware Engineer

We are hiring Avionics Hardware Engineers to own flight‑critical electronics across design, bring‑up, test, and integration. This role is intended for engineers with experience in complex electronic systems who can take responsibility for avionics subsystems and operate effectively in a high‑tempo development environment. Engineers in this role may own areas such as motor controllers, avionics backplanes, power distribution, or outward‑facing avionics test and integration.

Responsibilities

• Own avionics hardware from architecture and schematic design through PCB layout, bring-up, and production support

• Drive design decisions including component selection, interfaces, and system tradeoffs

• Lead hardware bring-up, debugging, and root-cause analysis across lab, integration, and flight test

• Collaborate cross-functionally to ensure avionics hardware meets performance, reliability, and mission requirements

• Define and execute hardware validation strategies appropriate to development and flight maturity

• Produce clear technical documentation covering designs, test results, and engineering changes

• Partner with manufacturing and suppliers to transition hardware from prototype to production

• Continuously improve designs based on test results, field data, and evolving requirements

Basic Qualifications

• Bachelor's degree in electrical engineering or related field

• Proven end-to-end ownership of avionics or high‑reliability electronic hardware

• Strong experience with PCB design, bring‑up, and lab debugging

• Ability to operate autonomously and drive hardware issues to closure

Preferred Qualifications

• Avionics, aerospace, missile, space, automotive, or defense hardware experience

• Experience with motor controllers, backplanes, power electronics, or flight hardware

• Familiarity with MIL‑STD or aerospace hardware standards (e.g., DO‑254 exposure)

• Embedded systems or FPGA‑adjacent hardware experience

• Experience supporting hardware in integration, test, or flight environments