Senior Power Electronics Engineer - Flight Hardware

Castelion Corporation; Los Angeles (CA); On-site; USD 150,000 - 190,000; Full time

Job summary

Castelion is seeking a Senior Power Electronics Engineer to develop and integrate advanced electrical power systems for Castelion's long-range hypersonic strike vehicles. This role is critical to ensuring reliable power generation, storage, and distribution across mission-critical avionics and vehicle subsystems.

You will work hands‑on with multidisciplinary engineering teams to design, analyze, test, and validate power electronics hardware in a fast‑paced, hardware‑driven environment.

Qualifications

• 5+ years of experience in power electronics design, analysis, and validation for aerospace, defense, or other high-reliability systems.
• Strong background in battery systems, power conversion (DC-DC), and power distribution architectures.
• Experience designing power controllers and power management systems for embedded or avionics applications.
• Proficiency in circuit design, simulation, and analysis tools (e.g., SPICE, MATLAB/Simulink, or equivalent).
• Experience with hardware bring-up, test, and troubleshooting in a lab or flight hardware environment.
• Familiarity with thermal management, EMI/EMC considerations, and ruggedized electronics design.
• Strong problem-solving mindset, thriving in a fast-paced, hardware-rich, high flight cadence environment.

Responsibilities

• Design and develop power electronics systems including battery architectures, power conversion, and distribution for high‑performance flight vehicles
• Lead the design and optimization of power controllers and power management systems to ensure stable, efficient operation across all mission phases
• Develop and analyze battery systems, including selection, packaging, thermal considerations, and safety mechanisms for demanding environments
• Work closely with avionics, GNC, and flight software teams to ensure seamless integration of power systems with vehicle subsystems
• Conduct circuit-level and system-level modeling and simulation to evaluate performance, efficiency, and reliability under dynamic conditions
• Support hardware bring‑up, integration, and test campaigns, including troubleshooting and root cause analysis
• Define and execute qualification and flight test plans, translating results into system‑level improvements
• Mentor junior engineers and contribute to best practices in power electronics design
• Partner closely with program leadership to make technical trades aligned with mission success

Skills

Power electronics design

Battery systems

Power conversion (DC-DC)

Power management systems

Embedded/avionics applications

Circuit design & simulation tools

Education

Bachelor's/Master's/PhD in Electrical Engineering

Tools

SPICE

MATLAB/Simulink

Job description

Castelion is seeking a Senior Power Electronics Engineer to develop and integrate advanced electrical power systems for Castelion's long-range hypersonic strike vehicles. This role is critical to ensuring reliable power generation, storage, and distribution across mission-critical avionics and vehicle subsystems.

You will work hands‑on with multidisciplinary engineering teams to design, analyze, test, and validate power electronics hardware in a fast‑paced, hardware‑driven environment.