Commissioning Project Engineer, Data Centers

ABOUT FLUIDSTACK At Fluidstack, we build the compute, data centers, and power that will fuel artificial superintelligence. We supply GWs of compute capabilities to the world’s biggest AI Labs at industry-defining speeds. Our team is small, fast, and obsessed with quality. We own outcomes end-to-end, challenge assumptions, and treat our customers' problems as our own. No task is beneath anyone here. There are a few thousand people who will shape the trajectory of superintelligence. Come and be one of them. ABOUT THE ROLE The Commissioning Project Engineer is responsible for planning, coordinating, and executing commissioning activities for data center and mission critical facility projects, with a primary focus on Factory Acceptance Testing (FAT) and the development, review, and approval of project test procedures. This role ensures all critical infrastructure systems — from power and cooling to controls and monitoring — are fully validated against design intent before energization and handover, protecting uptime, reliability, and client SLA commitments. RESPONSIBILITIES Factory Witness Testing (FWT) Coordination - Plan, schedule, and coordinate Factory Acceptance Tests (FATs) and Factory Witness Tests (FWTs) for mission critical equipment including UPS systems, generators, switchgear, PDUs, transformers, precision cooling units (CRACs/CRAHs/CDUs), BMS/EPMS controllers, and fire suppression systems - Review and approve vendor-submitted FAT procedures prior to testing, ensuring alignment with project specifications, Uptime Institute Tier standards, and client-specific requirements - Develop and distribute FAT schedules, witness notifications, and travel logistics for internal teams, client representatives, and third-party commissioning agents (CxAs) - Attend and lead witness tests at manufacturer facilities, documenting results, managing non-conformance reports (NCRs), and driving punch list resolution - Ensure all test data packages, certificates of conformance, and factory test reports are complete and submitted per project documentation requirements - Coordinate re-test scheduling with vendors where equipment fails to meet acceptance criteria, managing impacts to overall project schedule Test Procedure Review & Development - Lead the review, development, and approval of Level 1 through Level 5 commissioning test procedures across all critical systems, including electrical distribution, standby power, mechanical cooling, controls, DCIM/BMS integration, and security/access systems - Ensure procedures align with ASHRAE, TIA-942, Uptime Institute, and applicable NEC/NFPA standards, as well as owner-specified commissioning requirements - Coordinate interdisciplinary procedure reviews with MEP engineers, IT infrastructure teams, controls specialists, and HSE representatives - Maintain a master commissioning procedure register, tracking revision status, approval workflows, and issue-for-construction releases - Issue approved procedures to field commissioning teams, providing technical clarification and support during integrated systems testing (IST) and critical load testing - Identify and resolve conflicts between test procedures, engineering deliverables, and equipment submittals Project Coordination & Reporting - Track and report commissioning progress against project milestones, including shell & core readiness, critical path mechanical and electrical completions, and white space readiness - Maintain commissioning databases, test records, and punch lists in commissioning management platforms (e.g., Cx Alloy, ICAT, Procore) - Coordinate with procurement and equipment expediting teams to align vendor FAT dates with construction and fit-out schedules - Participate in commissioning readiness reviews, pre-TAB meetings, and critical power energization planning - Support the development of Operations & Maintenance (O&M) documentation and system turnover packages - Liaise with hyperscale, colocation, or enterprise end-users during witness testing and integrated system validation BASIC QUALIFICATIONS - Bachelor's degree in Electrical, Mechanical, or Building Services Engineering (or equivalent technical qualification) - 4–8 years of experience in commissioning or project engineering, with at least 2 years in data center, colocation, or mission critical environments - Demonstrated experience coordinating FATs for mission critical equipment (UPS, generators, switchgear, cooling systems) and developing multi-level commissioning test procedures - Working knowledge of Uptime Institute Tier classification methodology, TIA-942, ASHRAE TC 9.9, and NFPA 70/72/75/76 - Strong understanding of single-line diagrams, electrical distribution architecture, mechanical schematics, sequence of operations, and BMS/EPMS control logic - Familiarity with data center metrics including PUE, redundancy configurations (N, N+1, 2N), and critical load testing proto