Senior Subsea Structural Engineer – Primary Structures

Endurance Energy Inc.; Seattle (WA); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Health, Dental, Vision insurance

Flexible PTO including holidays

Global fieldwork travel

Hands-on sea trials

Cutting-edge development

Dive certification

Company boat access

Job summary

Endurance Energy is building the world’s first modular subsea geothermal power plants. We seek an engineer to own end-to-end load-bearing structures, from frames to pressure housings, in a fast-moving hardware environment.

You will define load cases, perform hand sizing, and validate with FEA, contributing to plant architectures and robust fabrication practices. You will work with ASME VIII, DNV, and API references, lead root-cause investigations, and collaborate with marine operations and

Qualifications

• Bachelor's degree in mechanical, aerospace, structural, or ocean engineering.
• 6+ years designing and analyzing load-bearing structures for demanding environments.
• Ownership of at least one large structure from design through fabrication and fielded use.
• Experience designing primary structures for subsea or offshore systems.
• Experience with ASME VIII, DNV, or API.
• Solid mechanics, structural dynamics, and fatigue fundamentals.
• Welding, tolerancing, and fabrication know-how.

Responsibilities

• Own specific elements of the primary structure end to end: frames, foundations and landing systems, lifting and deployment hardware, or pressure housings.
• Define structural load cases from first principles: lift through the splash zone, transit, landing on irregular seafloor, thermal expansion, and fatigue.
• Size structures with hand calculations, then prove them with FEA: static, fatigue, buckling, external-pressure collapse, and thermal.
• Design pressure-tolerant and pressure-compensated structures where possible; design and analyze pressure housings where required.
• Design lifting, rigging, deployment, and recovery hardware and the interfaces to vessels, cranes, and ROVs.
• Select materials and corrosion strategies for multi-year seawater exposure.
• Own weld design and fabrication for your structures and work with fabricators on procedures, inspection, tolerances.
• Build and test development articles, then qualify full structures.
• Lead root-cause investigations on structural and housing failures and implement corrective actions.
• Define interfaces with fluid components, electromechanical hardware, and well connection owned by peers.
• Contribute to plant-level architecture decisions alongside principal engineers.
• Create detailed 3D CAD models, drawings, and tolerance stacks for large assemblies.

Skills

Structural design

FEA

Pressure vessels

Welding & fabrication

Offshore/Subsea

ASME/API/DNV

Education

Bachelors in engineering

Tools

3D CAD

FEA software

Job description

Endurance Energy is building the world’s first modular subsea geothermal power plants. We seek an engineer to own end-to-end load-bearing structures, from frames to pressure housings, in a fast-moving hardware environment.

You will define load cases, perform hand sizing, and validate with FEA, contributing to plant architectures and robust fabrication practices. You will work with ASME VIII, DNV, and API references, lead root-cause investigations, and collaborate with marine operations and