Senior Power Electronics Engineer — Aerospace Defense (Equity)

Castelion

Torrance (CA)

On-site

USD 140,000 - 190,000

Full time

2 days ago

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Benefits offered by this job

Equity participation

Paid time off

Health benefits

Parental leave

Fitness stipend

Onsite charging

Catered meals

Stocked kitchen

Job summary

Castelion is seeking a Senior Power Electronics Engineer in Torrance, CA to lead development of advanced electrical power systems for high-reliability defense vehicles. You will work with multidisciplinary teams to design, analyze, test, and validate power electronics hardware in a fast-paced environment. The role emphasizes battery systems, DC-DC conversion, and power distribution, plus hardware bring-up and test campaigns.

U.S. citizenship is required and the ability to obtain a U.S.

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.

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.