Endurance Energy

Senior Mechanical Engineer

Seattle, WA · Senior

Sponsorship not specified$150k-$250kDetected 69 days ago

Thermal AnalysisRoboticsMechanical DesignPower Electronics

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.
These systems must survive high pressure, corrosion, thermal cycling, mechanical loads, and long deployment durations in saltwater environments.

Architect and design critical mechanical systems from concept through offshore deployment
Perform first-principles analysis of loads, thermal behavior, sealing strategies, and failure modes
Design pressure-tolerant hardware, structural systems, and thermal interfaces for subsea environments
Develop robust sealing and corrosion mitigation strategies for long-duration saltwater exposure
Design assemblies including pressure housings, structural frames, fluid systems, and deployment mechanisms
Create detailed 3D CAD models, drawings, and tolerance stacks for complex hardware
Build and test prototypes to validate mechanical performance and uncover failure modes
Design and execute qualification tests including pressure testing, fatigue testing, thermal cycling, and corrosion exposure
Investigate hardware failures and implement permanent design improvements
Work directly with fabricators and suppliers to build hardware quickly and correctly

6+ years designing and delivering complex mechanical systems in demanding environments
Deep proficiency in 3D CAD and mechanical design of complex assemblies
Experience designing hardware for harsh environments (subsea, aerospace, automotive, energy, robotics, etc.)
Proven ability to debug mechanical failures through testing and root-cause analysis
Comfort working hands-on with hardware in a lab or shop environment
Ability to move quickly, close loops, and make good engineering decisions under uncertainty
Demonstrated ownership of hardware from early concept through testing and deployment
Strong first-principles understanding of mechanics, materials, thermal systems, and failure modes
Strong intuition for structural load paths, sealing strategies, corrosion mitigation, and thermal management
High ownership mentality and accountability for system performance and reliability

Company-sponsored recreational dive certification
We are looking for someone who has personally built hardware, debugged mechanical failures in the lab or field, and understands the difference between a clean CAD model and a system operating in a harsh environment.

This listing is sourced directly from Endurance Energy's careers page and normalized into a canonical job model.