Welding & Fabrication Specialist

Endurance Energy • Seattle, WA

23h • Onsite

About The Position

Welding and Fabrication Specialist | Seattle, WA
Endurance is developing modular seafloor geothermal power plants that harness the vast thermal energy beneath the ocean floor to provide gigawatts of clean, reliable energy. We're addressing the critical power bottleneck facing AI infrastructure development while creating a path toward energy independence and decarbonization across the globe.
Backed by premier venture capital firms including First Round Capital and Point72 Ventures, our exceptional founding team includes veterans from SpaceX, Robinhood, Helion, and Neuralink, with specialized expertise in complex thermal and fluid systems and business development.
We’re seeking an experienced welder to join our team at our headquarters in Seattle. In this role, you’ll support the manufacturing of our heat exchangers, process piping, and support structures for our revolutionary seafloor power generation systems. This is a critical position where your welding, assembly, and fabrication skills will directly contribute to technologies that operate in some of the harshest environments on Earth.
The Role
As a welder at Endurance Energy, you’ll work alongside engineers to develop welding processes, fabricate novel heat exchanger designs, and develop repeatable manufacturing processes.
You’ll gain hands-on experience with GTAW and handheld laser welding of stainless steel, nickel alloys, and titanium while helping us manufacture the world’s first subsea geothermal power plant.
Additionally, you will support rapid prototyping and the first of a kind manufacturing efforts required to deliver subsea infrastructure in a fast-paced environment.

Requirements

• 3+ years of professional experience TIG welding advanced alloys including Inconel, stainless steel, and titanium
• Demonstrated proficiency in HHLBW (handheld laser beam welding) or willingness to train into laser processes
• Deep understanding of weld quality standards for high-pressure, high-temperature systems
• Experience fabricating or repairing components for marine, aerospace, or power generation systems
• Proven ability to fit, tack, and weld complex multi-material assemblies with tight tolerances
• Hands-on familiarity with fabrication tools, machining, and precision measurement
• Strong understanding of weld metallurgy, joint design, and distortion control for nickel and titanium alloys
• Comfortable reading and interpreting detailed engineering drawings and weld symbols (AWS D17.1 / ASME Section IX experience preferred)
• Knowledge of purging techniques, filler selection, and heat input control for corrosion-resistant weldments
• Track record maintaining a clean, organized, and safe fabrication environment
• Commitment to safety and continuous improvement in shop practices
• Ability to thrive in a fast-paced, prototype-driven environment where designs evolve rapidly
• Excellent communication and documentation skills to support engineering traceability and QA review

Nice To Haves

• Experience welding pressure vessels or process piping for 10,000 psi systems
• Familiarity with ASME code work or WPS/PQR development in collaboration with engineers
• Background in aerospace, energy, or marine fabrication environments
• Capability to perform visual and dye penetrant inspections
• CWI or other weld inspection certifications

Responsibilities

• TIG welding of Inconel, stainless steel, and titanium
• HHLBW (handheld laser welding) of Inconel, stainless steel, and titanium
• Fit, tack, and weld heat exchangers that transfer 100-1000s of kW of power
• Weld thick-walled process piping for extreme high-pressure systems
• Collaborated with engineers on welding procedure qualification
• Perform hands-on machining, fabrication, and modifications to support rapid prototyping and test readiness
• Follow safety procedures in a welding and fabrication shop, ensuring shop is compliant and safe
• Document assembly steps, test procedures, and observations for engineering review
• Collaborate with engineers to troubleshoot fit up and welding issues
• Maintain a clean and organized fabrication shop

Benefits

• Hands-on Experience: Work directly with large-scale, cutting-edge clean energy systems and participate in sea trials
• Impact-Driven Work: Contribute to solving one of the world’s most pressing challenges—clean, reliable power generation
• Competitive Compensation: Comprehensive salary
• Benefits: Health, dental, and vision coverage
• PTO: unlimited with advanced notice

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed