Senior Power Electronics Engineer

Responsibilities

• Architect and design subsea power conversion and distribution systems from generator interface through export and load integration
• Select and justify converter topologies for AC-DC, DC-DC, and DC-AC systems based on efficiency, fault tolerance, thermal constraints, and scalability
• 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
• Integrate power hardware cleanly with controls, firmware, mechanical systems, and offshore operations
• 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
• 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
• 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
• 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
• Ex

Benefits

Additional Information

About Endurance Endurance is building the world's first modular subsea geothermal power plants, converting vast thermal resources under the ocean into gigawatts of baseload power. 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. 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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