LotusWorks is an Engineering Services provider specializing in managing Commissioning, Construction Services, Calibration, Operations & Maintenance scopes of work within global manufacturing facilities. LotusWorks operates globally across EMEA and North America partnering with the world's leading manufacturers across the Semiconductor, Pharmaceutical & Biologics, Medical Device and Data Center sectors. Our team of Engineering and Technical professionals is immersed in cutting-edge technologies and innovations. LotusWorks is committed to a diverse and inclusive workplace, integral to our people-first approach. LotusWorks is seeking an experienced and safety-focused Senior Data Center Commissioning Manager to lead the end-to-end commissioning program for a major data center project in Grafton, Wisconsin. This role will be responsible for planning, executing, documenting, and turning over the commissioning program while ensuring MEP, controls, electrical, and life-safety systems perform in accordance with the Basis of Design (BOD), Owner’s Project Requirements (OPR), and project requirements. The Senior Data Center Commissioning Manager will own the end-to-end commissioning program for the facility — planning, execution, documentation, and turnover — and is the single point of accountability that the MEP, controls, and life-safety systems perform to the Basis of Design and OPR before the operations team accepts them. Responsibilities: Planning and pre-construction • Develop and maintain the Cx Plan, Cx specification (Div 01 91 13 / 25 08 00 etc.), and Level 1–5 definitions • Review OPR/BOD, design drawings, sequences of operations, and submittals for commissionability and testability • Build the integrated Cx schedule and tie it to the CM's master schedule; define Cx milestones and gating criteria • Define the Cx budget, staffing model, and test equipment/instrumentation needs • Establish the issues log, document control, and Cx software workflow (CxAlloy, BlueRithm, Facility Grid, etc.) Execution • Direct Cx engineers and field technicians; assign systems and coordinate with contractors' startup teams • Author or approve pre-functional checklists, functional performance tests, and IST scripts, including failure scenarios (utility loss, generator/UPS transfers, chiller failover, controls loss) • Witness L2–L3 (factory/site startup, QA/QC), run L4 functional testing, and lead L5 integrated systems testing under load • Manage load bank strategy, method of procedure (MOP) reviews, and energized-work safety controls • Chair Cx meetings; drive issue resolution and re-test; escalate schedule or quality risks to the owner and CM • Coordinate with the BMS/EPMS integrator on point-to-point, trending, alarms, and graphics verification Quality and documentation • Own the Cx issues log through closure; verify corrective work rather than accepting contractor sign-off • Manage test data, trend logs, and evidence packages per system • Produce the Final Cx Report, systems manual inputs, and lessons-learned • Verify O&M manuals, as-builts, training, and warranty documentation are complete before turnover Turnover and operations handoff • Lead operator training coordination and confirm operations staff witness key tests • Define and execute the turnover criteria and any seasonal/deferred testing plan • Support first-year warranty issues and any post-occupancy performance verification Interfaces Owner's rep/PM, CM/GC, MEP subcontractors, controls integrator, design engineers, AHJ/fire marshal, utility, and the incoming facilities O&M team. Skills Required: • 8–12+ years of experience in MEP construction, startup, commissioning, or a related field, with 3+ years of hyperscale or colocation data center experience. • Proven experience leading end-to-end commissioning programs from pre-construction through final turnover. • Strong experience with Level 1–5 commissioning, including L2–L3 startup/QA/QC, L4 functional testing, and L5 Integrated Systems Testing (IST). • Experience developing and maintaining Commissioning Plans, Cx specifications, integrated commissioning schedules, milestones, and gating criteria. • Strong understanding of OPR/BOD, design drawings, sequences of operation, specifications, and submittals, with the ability to evaluate systems for commissionability and testability. • Experience leading and coordinating Cx engineers, field technicians, contractors, and startup teams. • Strong knowledge of data center MEP, electrical, controls, and life-safety system. • Working knowledge of Uptime Tier and TIA-942 criteria, NFPA 70/72/110, ASHRAE 90.1/0.5. • Fluent in BMS/EPMS platforms, medium-voltage switchgear, gensets, UPS, chilled water/air-cooled plants, and fire suppression. Education / Licenses / Certifications: • CxA (ACG), CCP, QCxP, or CBCxP; EIT/PE or trade license a plus. • OSHA 10 or OSHA 30 required. • Proof of education, licenses, and certifications will be required where applicable. Benefits: • Medical, Dental and Vision Insurance • Life, Short-Term, Long-Term Disability Insurance • Training and Education Assistance • 401k Retirement Plan • Extra Annual Leave with Years of Service • Maternity/Paternity Leave • Recognition Rewards LotusWorks is an equal opportunity employer and prohibits discrimination and harassment of any kind. We are committed to creating a diverse and inclusive workplace where all employees feel valued, respected, and empowered.