Welding & Fabrication Specialist
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.
Key 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
Qualifications
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
Preferred Skills
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
Benefits & Perks
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
Endurance is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.