Welding & Fabrication Specialist

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.

What you'll be doing

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

• Global Fieldwork: Travel to fascinating deployment sites along oceanic ridges in locations like the Pacific Northwest, Hawaii, Iceland, Japan, New Zealand, and the Azores

• Hands-on Experience: Participate in sea trials and deployment operations in partnership with leading oceanographic institutions

• Cutting-edge Development: Work with technology that spans high-power electronics, marine systems, and clean energy

• Impactful Work: Help solve one of the world's most pressing challenges

• Competitive Compensation: Comprehensive salary and equity packages

• Benefits: Vision, Dental, Health insurance coverage

• Dive Certification: Company-sponsored recreational dive certification