Commissioning Project Engineer, Data Centers

About FluidstackAt 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 RoleThe 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.ResponsibilitiesFactory Witness Testing (FWT) CoordinationPlan, 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 systemsReview and approve vendor-submitted FAT procedures prior to testing, ensuring alignment with project specifications, Uptime Institute Tier standards, and client-specific requirementsDevelop 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 resolutionEnsure all test data packages, certificates of conformance, and factory test reports are complete and submitted per project documentation requirementsCoordinate re-test scheduling with vendors where equipment fails to meet acceptance criteria, managing impacts to overall project scheduleTest Procedure Review & DevelopmentLead 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 systemsEnsure procedures align with ASHRAE, TIA-942, Uptime Institute, and applicable NEC/NFPA standards, as well as owner-specified commissioning requirementsCoordinate interdisciplinary procedure reviews with MEP engineers, IT infrastructure teams, controls specialists, and HSE representativesMaintain a master commissioning procedure register, tracking revision status, approval workflows, and issue-for-construction releasesIssue approved procedures to field commissioning teams, providing technical clarification and support during integrated systems testing (IST) and critical load testingIdentify and resolve conflicts between test procedures, engineering deliverables, and equipment submittalsProject Coordination & ReportingTrack and report commissioning progress against project milestones, including shell & core readiness, critical path mechanical and electrical completions, and white space readinessMaintain 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 schedulesParticipate in commissioning readiness reviews, pre-TAB meetings, and critical power energization planningSupport the development of Operations & Maintenance (O&M) documentation and system turnover packagesLiaise with hyperscale, colocation, or enterprise end-users during witness testing and integrated system validationBasic QualificationsBachelor'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 environmentsDemonstrated experience coordinating FATs for mission critical equipment (UPS, generators, switchgear, cooling systems) and developing multi-level commissioning test proceduresWorking knowledge of Uptime Institute Tier classification methodology, TIA-942, ASHRAE TC 9.9, and NFPA 70/72/75/76Strong understanding of single-line diagrams, electrical distribution architecture, mechanical schematics, sequence of operations, and BMS/EPMS control logicFamiliarity with data center metrics including PUE, redundancy configurations (N, N+1, 2N), and critical load testing protocolsProficiency in commissioning management software and document control platformsWillingness to travel domestically and internationally for vendor FATs and site commissioning supportPreferred QualificationsExperience on hyperscale, colocation, or enterprise data center projects (50MW+)Certified Commissioning Professional (CCP), ACG Cx credentials, or equivalentExperience with generator paralleling systems, medium voltage switchgear, static transfer switches (STS), and UPS systemsExposure to liquid cooling technologies including rear-door heat exchangers, direct liquid cooling (DLC), and immersion coolingBenefitsCompetitive total compensation package (cash + equity).Retirement or pension plan, in line with local norms.Health, dental, and vision insurance.Generous PTO policy, in line with local norms.The base salary range for this position is $150,000 - $220,000 per year, depending on experience, skills, qualifications, and location. This range represents our good faith estimate of the compensation for this role at the time of posting. Total compensation may also include equity in the form of stock options.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. Compensation Range: $150K - $220K