Commissioning & Field Engineer, Mechanical

Fluidstack; San Francisco (CA); On-site; USD 161,000 - 203,000; Full time

Job summary

Fluidstack is seeking a commissioning lead to oversee the integration and testing of mechanical systems for mission-critical data centers in the San Francisco area. You will commission large-scale cooling plants, CDUs, liquid loops, and airside systems, ensuring all components operate as a unified system.

You will write rigorous test procedures from sequences of operation, execute tests, and coordinate with vendors under tight deadlines. Fluently reading P&IDs and controls drawings is required.

Qualifications

• Commissioning mechanical plant on mission-critical facilities through integrated systems testing.
• Written test procedures from sequences of operation and identified where sequences were wrong.
• Able to fluently read P&IDs and controls drawings.
• Troubleshoot live systems with vendors under deadlines.

Responsibilities

• Commission mechanical systems for gigawatt-scale data centers: chilled water plants, CDUs, liquid loops, airside systems (Level 2–Level 5).
• Write and execute test scripts proving capacity, redundancy, and failure response beyond basic on/off checks.
• Run functional and integrated systems tests with controls and electrical to ensure the building operates as a single system.
• Feed test findings back into standard designs to accelerate future site commissioning.

Skills

Commissioning

Test procedures

P&ID reading

Troubleshooting

Vendor coordination

Tools

Test scripting

Integrated systems testing

Controls drawings

Job description

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.
• You have commissioned mechanical plant on mission critical facilities through integrated systems testing.
• You have 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.

Compensation Range: $161K - $203K

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.

We are committed to pay equity and transparency.