Endurance Energy
Senior Power Electronics Engineer
Seattle, WA · Senior
Sponsorship not specifiedDetected 36 days ago
Thermal AnalysisPCB DesignEMI/EMCElectrical EngineeringPower ElectronicsLoad TestingCommunicationCollaboration
About the role
- Backed by Founders Fund, Felicis, First Round Capital, and Point72 Ventures, our founding team includes veterans from SpaceX, Helion, and Robinhood.
- We have completed multiple deep-ocean deployments and are launching a long-term demonstration project this fall.
- If a converter fails at depth, you will understand why and ensure it does not fail again.
Responsibilities
- Architect and design subsea power conversion and distribution systems from generator interface through export and load integration
- Design high-power PCBAs including schematic capture, magnetics design, gate drive architecture, current sensing, isolation strategy, and protection circuitry
- Own PCB layout review with specific attention to high di/dt loops, parasitic inductance, creepage and clearance, EMI containment, and thermal paths
- Mechanically collaborate on packaging, heat rejection, pressure-tolerant enclosures, and high-voltage isolation within subsea assemblies
- Define and implement system-level protection philosophy including overcurrent, overvoltage, short-circuit, ground fault detection, isolation monitoring, and coordinated fault response
- Develop fault trees and failure containment strategies to prevent single-point electrical failures from propagating through the system
- Lead board bring-up, lab validation, and full-load testing including efficiency characterization, thermal validation, EMI testing, and fault injection
- Drive root cause investigations for converter instability, switching noise, insulation breakdown, component overstress, and field failures
- Own the full system lifecycle including fabrication release, vendor coordination, revision control, and production readiness
- Establish electrical design standards, review rigor, documentation discipline, and reliability practices appropriate for subsea energy infrastructure
Requirements
- 6+ years of experience designing and shipping power electronics hardware in demanding or high-reliability environments
- Proven experience designing high-power PCBAs including schematic capture, layout collaboration or ownership, isolation strategy, and protection circuitry
- Strong working knowledge of grounding, shielding, EMI mitigation, creepage and clearance requirements, and high di/dt layout practices
- Ability to think from first principles and challenge legacy assumptions when appropriate
- Demonstrated experience architecting complete power systems, not just individual boards or subcircuits
- Deep understanding of power conversion fundamentals including topology tradeoffs, control loop stability, magnetics design, switching losses, thermal modeling, and efficiency optimization
- Experience implementing and validating protection strategies including overcurrent, overvoltage, short-circuit, ground fault detection, and fault isolation
- Hands-on lab experience bringing up high-power hardware, debugging instability, chasing down noise and parasitics, and performing controlled fault injection
- Demonstrated ownership of hardware through full lifecycle including board release, fabrication, bring-up, revision control, and production transition
- High ownership mentality and comfort being the single-threaded owner of a critical electrical system
- Strong cross-disciplinary communication skills and ability to collaborate with mechanical, controls, subsea, and offshore operations teams
- Entrepreneurial mindset and willingness to operate in ambiguity while building a new class of energy infrastructure
Nice to have
- Experience with high-voltage systems or DC buses preferred, including practical understanding of insulation coordination and safety considerations
Compensation
- Comprehensive salary and equity packages
Benefits
- Vision, Dental, Health insurance coverage
- Competitive Compensation: Comprehensive salary and equity packages
Company info
- Company-sponsored recreational dive certification
- We are looking for someone who has personally selected topologies, designed magnetics, laid out high-power PCBAs, brought up boards in the lab, debugged switching noise and instability, and driven designs through revision cycles into production.
- By leveraging modular design, manufacturing scale, efficient drilling, and latent cooling on the seafloor, we are pioneering a new category of energy that outperforms traditional sources on both environmental impact and cost.
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