Commissioning Senior Manager - Mechanical

Overview

Fleet Data Centers designs, builds, commissions, and operates mega-scale data center campuses. Fleet provides its customers with flexibility and predictability to meet their upside demand forecasts, addressing a key need in the market as traditional leased models are struggling to keep pace with the demand for new Cloud and AI infrastructure. Fleet is led by a team of industry veterans that have already made a lasting imprint on the evolution of global digital infrastructure and are committed and uniquely capable of upleveling data center development scale and operations in the face of rising demand. Fleet is well positioned to bring in-house design, engineering, commissioning, and operational capabilities to collaborate with customers on tailored solutions for campuses of 500MW+. This unique model enables Fleet to provide the world’s largest and most sophisticated customers with a seamless extension of their own data center fleets with constant access to design innovation. Fleet is headquartered in Denver, Colorado, with satellite offices in Seattle, WA and Arlington, VA.

Position Overview

The Commissioning Senior Manager - Mechanical serves as Fleet’s onsite commissioning lead and representative for the assigned project/campus and leads the end-to-end commissioning lifecycle for all building systems in Fleet’s mission-critical and supporting facilities, with primary technical expertise in mechanical systems. This role is accountable for the execution, coordination, and delivery of commissioning across electrical, mechanical, plumbing, controls, fire protection/fire alarm, security, and related building systems, ensuring they are installed, tested, verified, and handed over to operations to meet performance, reliability, and safety requirements. This role integrates design intent with field execution, orchestrates multi-disciplinary teams, manages risk, and delivers auditable commissioning evidence that enables on-time, on-budget, and right-first-time facility readiness.

The successful candidate will need to possess a strong understanding of HVAC systems, chilled water plants, industrial water systems, adiabatic cooling, CRAC/CRAH units, hydronic distribution, fuel oil systems, building management systems (BMS), fire protection systems, water treatment plants, and administration and logistics buildings. In addition to deep mechanical commissioning expertise, the candidate must possess working knowledge of electrical, plumbing, controls, fire protection, fire alarm, security, and other interfacing building systems, and be capable of serving as Fleet’s onsite commissioning lead across the full project scope. Also they will need to lead multi-disciplinary teams under tight deadlines and high-pressure conditions, while maintaining accurate commissioning records and turnover packages shared with Fleet leadership. This person will attend all commissioning meetings, track schedule adherence, issue closure rates, and system performance metrics.

Job Responsibilities

The successful candidate will have experience and practical expertise in the following:

Planning & coordination:

Review Basis of Design (BoD), drawings, specifications, and submittals for commissioning requirements and testability.

Review and collaborate on sequences of operation (SOO) with design and controls teams; ensure sensor placement, access, and valving support for commissioning and future operations.

Development and/or assist with the development and upkeep of the Commissioning Plan (scope, phasing, staffing, RASIC, tools, documentation control, quality gates).

Define mechanical commissioning schedule aligned with construction and IST milestones; identify long-lead equipment and factory witness tests.

Develop and/or assist with the development of Level 1, Level 2, and Level 3 commissioning checklists.

Develop and/or assist in the development of Level 4 and Level 5 commissioning test scripts.

Commissioning Operations & Execution:

Be responsible for commissioning team communications and updates, including leading or co-leading meetings.

Oversee and/or lead Site Acceptance, Installation, and Pre-energization inspections, checklists, required documentation (i.e., torque reports, megger reports, continuity reports, NETA reports) provided by contractors and vendors and issue resolution.

Oversee and/or lead first time energization, pre-functional checklists (PFCs), start-up acceptance testing (SAT), and functional test scripts (FTs) for mechanical equipment and systems across all modes (normal, degraded, failover, emergency, maintenance bypass, recovery), including required documentation provided by contractors and vendors and issue resolution.

Oversee vendor/OEM Level – 3 start-ups; verify conformance to submittals and sequences of operation (SOO).

Oversee and coordinate TAB (Testing, Adjusting, Balancing) strategy, prerequisites, witnessing, and final report acceptance.

Validate BMS point-to-point, alarm priorities, trending, graphics, and historian; ensure controls narratives are executable and traceable.

Validate SCADA/EPMS point-to-point, alarm priorities, trending, graphics, and historian; ensure controls narratives are executable and traceable.

Oversee and/or lead the plan and execution load bank testing, thermal validation protocols (as applicable), and performance testing to prove capacity and stability.

Drive Integrated Systems Testing (IST) readiness and execution with electrical and life safety teams, ensuring mechanical responses and interlocks perform per design intent.

Regularly required to stand, walk, use hands and fingers, handle or feel objects, tools, or controls; reach with hands and arms; stoop, kneel, crouch, or crawl; talk, hear, and smell. Frequently required to sit, climb, and balance. Specific vision abilities required by this job include close vision, distance vision, basic color differentiation and the ability to adjust focus. Regularly lift and/or move up to 25 pounds.

Documentation & Turnover:

Maintain a controlled repository within the Commissioning Platform for commissioning artifacts: SAI, Installation, PFCs, SATs, FPTs, IST results, issues logs, RFIs, redlines, and sign-offs.

Review and/or produce consolidated Commissioning Reports with executive summaries, data visuals, narratives, and appendices.

Assist with assembling Turnover Packages: final SOO, as-builts, TAB report, O&M manuals, warranties, spare parts lists, PM matrices, and training materials.

Oversee and coordinate operator training and verify knowledge transfer (sign-in records and demonstration or assessment).

Team Leadership & Development:

Serve as Fleet’s onsite commissioning lead and representative for the assigned project, with primary technical leadership for mechanical systems and overall responsibility for commissioning execution across electrical, mechanical, plumbing, controls, fire/life safety, security, and related systems; build trusted relationships with clients, GC/CMs, sub-contractors, vendors, and operations.

Communicate progress, challenges, and solutions to leadership and cross-functional stakeholders; lead regular meetings and readiness reviews.

Collaborate closely with pre-construction, design, construction, and operations teams to ensure seamless transition from construction to steady-state operations.

Safety & Compliance:

Operate safely in a fast pace, multi-phase construction atmosphere.

Enforce lockout/tagout (LOTO), hot work permits, confined space, working at heights, and chemical handling protocols.

Ensure compliance with applicable codes and standards (e.g., ASHRAE guidelines, NFPA where applicable, local/state mechanical codes).

Conduct Job Hazard Analyses (JHAs) and pre-task plans; use proper PPE; lead daily toolbox talks during commissioning peaks.

Champion safety culture and environmental compliance across all commissioning activities.

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