Avionics Hardware Engineer, Senior, Staff

Castelion Corporation•Torrance, NM

About The Position

Castelion is hiring experienced Avionics Hardware Engineers to work across its avionics organization, specializing in high-speed digital design, flight computer architecture, and advanced avionics hardware development. The role is intended for engineers with strong electrical engineering fundamentals and hands-on experience owning complex embedded hardware for mission-critical systems. The work focuses on flight computer architecture, high-speed digital board design, system bring-up, and hardware validation using flight hardware. Engineers are expected to own complex board designs from architecture through integration and to work effectively in a fast-paced hardware development environment. The position involves close collaboration with avionics, embedded software, test, and manufacturing teams. The position may require access to classified information or restricted U.S. Government sites, systems, or information. If designated, employment may depend on obtaining and maintaining the required government security clearance or authorization and meeting applicable citizenship or other eligibility requirements. Access to export-controlled information is required, so employment is contingent on being able to access applicable information without additional export licensing.

Requirements

Bachelor's degree in electrical engineering or a related field.
Strong experience with complex digital or mixed-signal hardware design.
Experience with high-speed digital systems, embedded processors, memory interfaces, and board-level architecture.
Experience with PCB design tools.
Hands-on experience with oscilloscopes, logic analyzers, and power supplies.
Strong understanding of core electrical engineering principles, including digital systems, signal integrity, power distribution, and hardware debugging.
Comfort working in a fast-paced, highly collaborative environment.
Ability to access applicable export-controlled information without additional export licensing being required.

Nice To Haves

Experience owning flight computer, avionics, or embedded compute hardware architectures.
Experience taking complex PCB assemblies from concept through bring-up, validation, and integration.
Exposure to embedded systems, firmware, or FPGA interaction.
Familiarity with aerospace, automotive, robotics, defense, or other high-reliability hardware environments.
Familiarity with Ethernet, SPI, I2C, UART, CAN, PCIe, or DDR memory systems.
Basic scripting or programming experience, such as Python or C/C++.
Experience with Altium, which is preferred.

Responsibilities

Design and develop board-level electrical hardware, including schematic capture, PCB layout oversight, component selection, and interface definition.
Own high-speed digital and embedded flight computer architectures, including processors, memory systems, and board-level integration.
Perform board bring-up, validation, debugging, and root-cause analysis in the lab.
Test reference boards and early prototypes using standard lab equipment.
Address signal integrity, power integrity, and hardware reliability throughout the design lifecycle.
Collaborate with avionics, embedded software, test, and manufacturing teams to iterate designs quickly.
Support hardware/software integration and troubleshooting across avionics platforms.
Document designs, test results, and engineering changes.