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Welding Engineer / AWS D1.1 CWI

Fluidstack· Manufacturing
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Phoenix, AZ$169k - $193k + equityFull-timePosted 3mo ago

About the role

Welding Engineer role focused on writing and qualifying welding procedures, inspecting welds, building and maintaining a weld quality program, qualifying welders, and reducing weld defects in modular data center assemblies.

Responsibilities

  • Write and qualify welding procedure specifications and procedure qualification records to AWS D1.1 for the structural and pressure-boundary welds in modular data center assemblies.
  • Inspect and certify welds across the manufacturing line, signing off on the work an AHJ or auditor will not accept without a qualified inspector.
  • Build the weld quality program for a factory producing data center modules at rate, setting the acceptance criteria, NDE requirements, and first-pass-yield targets.
  • Qualify welders and welding operators, and stand up the continuity and requalification tracking that keeps the whole line certified.
  • Drive down weld defect and rework rates by root-causing failures on the floor and feeding fixes back into procedures and fixturing.

Qualifications

  • The candidate holds a current AWS Certified Welding Inspector (CWI) credential and has signed off on structural or pressure welds to AWS D1.1 or an equivalent code.
  • You've written and qualified WPS and PQR documentation for production welding, not just reviewed someone else’s.
  • You've stood up or run a weld quality program in a manufacturing or fabrication environment producing at rate.
  • You've qualified welders and managed the continuity records that keep a line's certifications valid.
  • You root-cause weld defects on the floor and close the loop by fixing the procedure, the fixture, or the training, so the same defect doesn't come back.
  • You read a weld map and a fabrication drawing and catch the problem before the first arc strikes.

Skills

Required:AWS D1.1 weld proceduresWeld inspection and certification
Last updated Oct 13, 2026. Interested? Apply on the company site.
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About Fluidstack

Fluidstack builds civilization-scale infrastructure for AI

Fluidstack builds civilization-scale infrastructure for AI, delivering gigawatts of compute in 6 months. We're leading the deployment of Anthropic's $50B compute build out.

AI infrastructurecompute centershardwaresoftwarepowerdata centersAnthropicfrontier compute
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