Senior Control Electronics Engineer

Why Castelion, Why NowCastelion 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.Senior Control Electronics EngineerWe 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.ResponsibilitiesDesign and develop real-time control electronics for flight-critical systems, including TVC controllers and attitude control system (ACS) driver electronicsLead the architecture and implementation of actuator control systems, including motor drivers, valve drivers, and associated feedback/control loopsDevelop high-reliability analog and mixed-signal circuits for precision control, sensing, and actuationWork closely with GNC, avionics, and flight software teams to ensure seamless integration of control electronics with vehicle systemsPerform circuit-level and system-level modeling and analysis to validate performance, stability, and robustness under dynamic flight conditionsSupport hardware bring-up, integration, and test campaigns, including debugging, root cause analysis, and performance tuningDefine and execute qualification and flight test plans, translating results into system-level improvementsEnsure designs meet requirements for thermal performance, EMI/EMC, and operation in extreme environmentsMentor junior engineers and contribute to best practices in control electronics designPartner closely with program leadership to make technical trades aligned with mission successBasic QualificationsBachelor's, Master's, or PhD in Electrical Engineering or related field5+ years of experience designing and validating control electronics for aerospace, defense, or other high-reliability systemsStrong background in real-time control systems, actuator electronics, and feedback control implementation in hardwareExperience designing motor drivers, valve drivers, or similar high-performance actuator control electronicsProficiency 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 environmentFamiliarity with EMI/EMC design practices, ruggedized electronics, and operation in high-vibration/high-temperature environmentsStrong problem-solving mindset, thriving in a fast-paced, hardware-rich, high flight cadence environmentOther DutiesPlease 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.Benefits And PerksAll full-time employees are granted meaningful long-term equity, sharing in the company's significant growth trajectory. We offer four (4) weeks of paid time off, ten (10) company-paid holidays, and comprehensive health benefits - including 100% employee-covered medical and strong dependent coverage, along with dental and vision plans. We also provide paid parental leave to support growing families, a $100 monthly fitness stipend to promote health and performance, and onsite EV charging for convenience. In addition, employees enjoy perks like catered meals, company-covered food during high-demand periods, and a fully stocked kitchen to stay fueled throughout the day.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.Affirmative Action/EEO StatementEmployment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.