Senior Control Electronics Engineer

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts.

This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact.

We are seeking a Senior Control Electronics Engineer to design and deliver real-time electronic control systems for Castelion's long-range hypersonic strike vehicles. This role is critical to enabling precise actuation and vehicle control through robust, high-performance electronics. You will work hands‑on with multidisciplinary engineering teams to design, build, test, and validate control electronics hardware, with a focus on thrust vector control (TVC) systems and attitude control system (ACS) drivers in a fast‑paced, hardware‑driven environment.

• Design and develop real-time control electronics for flight-critical systems, including TVC controllers and attitude control system (ACS) driver electronics
• Lead the architecture and implementation of actuator control systems, including motor drivers, valve drivers, and associated feedback/control loops
• Develop high-reliability analog and mixed-signal circuits for precision control, sensing, and actuation
• Work closely with GNC, avionics, and flight software teams to ensure seamless integration of control electronics with vehicle systems
• Perform circuit-level and system-level modeling and analysis to validate performance, stability, and robustness under dynamic flight conditions
• Support hardware bring-up, integration, and test campaigns, including debugging, root cause analysis, and performance tuning
• Define and execute qualification and flight test plans, translating results into system-level improvements
• Ensure designs meet requirements for thermal performance, EMI/EMC, and operation in extreme environments
• Mentor junior engineers and contribute to best practices in control electronics design
• Partner closely with program leadership to make technical trades aligned with mission success

• Bachelor's, Master's, or PhD in Electrical Engineering or related field
• 5+ years of experience designing and validating control electronics for aerospace, defense, or other high-reliability systems
• Strong background in real-time control systems, actuator electronics, and feedback control implementation in hardware
• Experience designing motor drivers, valve drivers, or similar high-performance actuator control electronics
• Proficiency in analog and mixed-signal circuit design, simulation, and analysis (e.g., SPICE, MATLAB/Simulink, or equivalent)
• Experience with hardware bring-up, integration, and troubleshooting in a lab or flight hardware environment
• Familiarity with EMI/EMC design practices, ruggedized electronics, and operation in high-vibration/high-temperature environments
• Strong problem-solving mindset, thriving in a fast-paced, hardware-rich, high flight cadence environment

While this position does not currently require a U.S. government‑issued security clearance, it may in the near future. Therefore, the ability to obtain and maintain a U.S. government‑issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change…