Cx, QA, & Field Engineer, Site Manager

Fluidstack•Austin, TX

9d•$190,000 - $242,000•Onsite

About The Position

Fluidstack is building civilization-scale infrastructure for AI, focusing on delivering 10 to 100s of GWs of compute faster than anyone else. This involves acquiring power, designing and building data centers, and operating them. The company emphasizes speed, scale, and a deep commitment to the problem space of AI alignment and human freedom. The Commissioning Team is responsible for standing up commissioning programs, running commissioning and QA-QC for modular data centers, and automating commissioning processes. This role acts as the Owner's Commissioning Site Manager, overseeing multiple sites. The manager will direct general contractors, designers, commissioning agents, and vendors through all levels of commissioning for critical systems including chilled water, HVAC, electrical, BMS, and EPMS. Key responsibilities include witnessing and verifying field testing, reviewing technical documentation, managing commissioning schedules and issue logs, and troubleshooting startup and performance issues to drive resolution.

Requirements

Served as the Owner's commissioning lead on a hyperscale or mission critical data center build, holding general contractors, designers, commissioning agents, and vendors to the test plan and schedule.
Personally witnessed and signed off Level 1 to Level 5 testing on mechanical plant: chillers, cooling towers, dry coolers, pumps, CRAH and CRAC units, AHUs and MAUs, computer room ventilation, heat exchangers, expansion tanks and pressurization units, water treatment, piping distribution, control valves, VFDs, leak detection, fuel oil transfer, and the BMS and HVAC control sequences.
Witnessed and signed off Level 1 to Level 5 testing on electrical systems: generators and paralleling switchgear, HV, MV, and LV transformers and switchgear, main switchboards, UPS and battery systems, ATS and STS, PDUs, busways, RPPs, grounding, lighting controls, PLC-based automatic and semi-automatic switching controls, and the EPMS.
Tested to NETA specifications and run commissioning to ASHRAE or BCxA guidelines, and identified when a commissioning agent's script or a vendor's report does not meet them.
Diagnosed startup failures under schedule pressure, traced them to design, installation, controls, or equipment, and driven the fix through the responsible party.
Kept the issues log, test records, and turnover package current enough that a facilities team could operate the plant from them on day one.
Briefed GCs, designers, and owners in writing that leads to a decision.

Nice To Haves

BSc or MSc in mechanical or electrical engineering.
BCxA or ASHRAE commissioning certification (CxA, CBCP, or similar).
Commissioning of first-of-a-kind modular data centers.
Level 4 and Level 5 test automation.
Water treatment and fuel oil system commissioning at campus scale.

Responsibilities

Act as the Owner's Commissioning Site Manager across multiple sites, directing general contractors, designers, commissioning agents, and vendors through Level 1 to Level 5 commissioning of chilled water, HVAC, electrical, BMS, and EPMS systems.
Witness and verify pre-functional and functional testing in the field: flushing and pressure testing, test and balance, equipment startup, sequence of operations validation, NETA acceptance testing of electrical gear, and integrated systems tests.
Review commissioning plans, method of procedure documents, test scripts, and vendor startup reports against ASHRAE, BCxA, and NETA requirements.
Own the commissioning schedule and issues log for each site, surfacing failed tests, open punch items, and vendor readiness gaps to protect energization and turnover dates.
Troubleshoot startup and performance issues on mechanical plant, electrical distribution, and their controls, isolate the root cause, and drive the fix to close through the responsible party.