Senior Control Electronics Engineer Torrance, CA; Rio Rancho, NM Leviathan Engineering

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

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
• 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

Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.

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 at any time with or without notice.

This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements.

You will be notified if and when such requirements apply.

Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran…