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Cx, QA, & Field Engineer, Mechanical

Commission gigawatt-scale data center mechanical systems for a faster, more efficient future.

Commission mechanical systems for massive data centers, write and execute rigorous tests, ensure seamless integrated performance, and streamline future deployments. Contribute to building civilization-scale AI infrastructure with full autonomy and intense urgency.

Why This Role?

Directly contribute to a mission-driven company shaping the future of AI through cutting-edge infrastructure.

Key Responsibilities

  • Commission mechanical systems like chilled water plants and CDUs for gigawatt-scale data centers.
  • Develop and execute comprehensive test scripts to verify capacity, redundancy, and failure response.
  • Collaborate with controls and electrical teams for end-to-end system functionality testing.
  • Translate test findings into design improvements for accelerated future deployments.

Requirements

  • Proven experience commissioning mechanical systems in large-scale data centers.
  • Strong understanding of chilled water plants, CDUs, liquid loops, and airside systems.
  • Ability to write and execute detailed test scripts and analyze results.
  • Experience with Level 4 and Level 5 commissioning processes.

Required Skills

qafield-engineeringmechanical-systemstest-scriptingsystem-testingData Center CommissioningMechanical EngineeringSystem TestingProblem-SolvingCollaborationAttention to Detail

Indonesia Context

Working Hours Overlap:
Flexible — work your own hours
See remote (USD) vs local pay →
View Original Description from Ashby Job Boards

Original description from Ashby Job Boards

ABOUT FLUIDSTACK We exist to make humanity more free. For most of human history, you farmed or you starved. Technology gave people more time for the things they wanted to do, instead of things they had to do. Powerful AI will be the biggest lever for human choice we've ever built - but only if models are aligned with what humanity actually wants. There are groups building AI who don't share these goals. Whoever deploys frontier compute infrastructure fastest will decide whether AI expands human freedom or shrinks it. We're singularly focused on delivering 10 to 100s of GWs of compute faster than anyone else, rethinking every layer of the stack. We acquire power, design and build data centers, and operate them - with teams spanning hardware and software. Speed and scale are our key differentiators. Come be a part of building civilization-scale infrastructure for AI. We hire people who care deeply about this problem space. If that is you, please apply! HOW WE OPERATE - Be a barrel. Full autonomy. Own things end to end, take on scope without being asked, no permission required to operate outside your core role. - Insane urgency. We drive everything forward as fast as possible. - Reason from first principles. Challenge every assumption. Zero analogy thinking, no egos, the best idea wins. - Love of the game. The frontier of AI is the most interesting problem of our time. We put in long hours at high intensity to push the frontier forward. - Build something that actually matters. If you're going to spend your time, spend it on something that matters to the world. THE COMMISSIONING TEAM Examples of key problems the team is working on - Stand up the commissioning program for 10s to 100s of GWs of capacity this decade. - Run commissioning and QA-QC for first-of-a-kind modular data centers. - Automate Level 4 and Level 5 commissioning. ROLE SCOPE - Commission mechanical systems for gigawatt-scale data centers: chilled water plants, CDUs, liquid loops, and airside systems from Level 2 through Level 5. - Write and execute test scripts that prove capacity, redundancy, and failure response, not just that equipment turns on. - Run functional and integrated systems tests with controls and electrical so the building performs as one system. - Feed test findings back into the standard design so the next site commissions faster. WHAT WE'RE LOOKING FOR - The below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would https://jobs.ashbyhq.com/fluidstack/05c2e69c-42f9-4fcb-9cf0-a467aaf98f1c. - You've commissioned mechanical plant on mission critical facilities through integrated systems testing. - You've written test procedures from sequences of operation, and found where the sequence was wrong. - You read P&IDs and controls drawings fluently. - You troubleshoot live systems with vendors watching and a deadline standing behind you. - Bonus: Liquid cooling and direct-to-chip systems. CxA credential. Modular data centers. Test and balance oversight. We are committed to pay equity and transparency. Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law. You will receive a confirmation email once your application has successfully been accepted. If there is an error with your submission and you did not receive a confirmation email, please email careers@fluidstack.io with your resume/CV, the role you've applied for, and the date you submitted your application-- someone from our recruiting team will be in touch.

Salary Context

Similar Engineering roles on LokerDollar pay around $170k/yr (range $855–1000k/yr, n=709 active listings).

Hiring at Fluidstack

Fluidstack has 14 other active roles on LokerDollar and has been hiring here since Jun 10, 2026 — across Engineering.

View all Fluidstack openings →
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Company
Fluidstack
Salary
Job Type
full time
Location
Remote · Open worldwide
Category
Seniority
senior
PostedNew & verified
Aug 3, 2026

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Frequently asked questions

Is Cx, QA, & Field Engineer, Mechanical at Fluidstack a remote job?
Yes. Cx, QA, & Field Engineer, Mechanical at Fluidstack is a fully remote role open to candidates worldwide.
What is the salary for Cx, QA, & Field Engineer, Mechanical at Fluidstack?
The listed pay range for this role is $190k–242k/yr.
What type of employment is Cx, QA, & Field Engineer, Mechanical at Fluidstack?
This is a full time position.
How do I apply?
Click the "Apply" button on this page to go to the official application at Fluidstack.

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