Lead Mechanical Commissioning Engineer - Data Center Projects

Location: Atlanta, GA

Department: Commissioning

• Lead the Mechanical Commissioning program through L1–L5 for a large-scale data center construction project.
• Manage and provide technical leadership to Mechanical Commissioning Engineers and field personnel.
• Assign work, establish priorities, monitor progress, and ensure the mechanical Cx team meets project milestones and client expectations.
• Serve as a primary mechanical commissioning interface with the client, GC/CM, MEP contractors, design engineers, controls teams, equipment vendors, and other commissioning disciplines.
• Represent the mechanical Cx team during client meetings, commissioning meetings, coordination meetings, schedule reviews, and project-status discussions.
• Lead mechanical commissioning planning, system readiness, startup coordination, functional testing, issue resolution, and turnover.
• Oversee L1 equipment/documentation verification and L2 installation verification/construction-readiness inspections.
• Coordinate L3 startup, pre-functional checks, equipment startup documentation, and system readiness.
• Lead L4 Functional Performance Testing (FPT), including test-procedure review and coordination of contractors, vendors, and controls personnel.
• Provide mechanical leadership during L5 Integrated Systems Testing (IST), including normal, failure, recovery, and emergency operating scenarios.
• Lead mechanical system walkdowns and determine readiness for commissioning and testing.
• Review mechanical drawings, specifications, submittals, equipment documentation, sequences of operation, controls documentation, and commissioning requirements.
• Coordinate mechanical activities with BMS/controls, electrical, EPMS, life-safety, and other project disciplines.
• Monitor mechanical commissioning progress against the project schedule 
• Ensure contractors, vendors, and internal Cx personnel complete required commissioning deliverables.
• Provide clear project-status reporting to FST leadership and the client.

• L1–L5 commissioning documentation and supporting evidence, commissioning checklists and test scripts
• Equipment startup documentation and pre-functional checklists, Functional Performance Test documentation, IST documentation
• Deficiency, issue, retest, and closure documentation
• System turnover packages, Mechanical commissioning reports
• Client deliverables and final project closeout documentation

• Chilled water systems and central plants, Chillers and cooling towers, CRAH and CRAC units
• Air Handling Units (AHUs), Pumps and hydronic systems, Condenser water systems and heat exchangers, Data hall cooling systems, HVAC and ventilation systems
• BMS and mechanical controls, sequences of operation and controls integration, In-row cooling systems, CDU/direct-to-chip or liquid cooling systems, where applicable
• Other mission-critical mechanical infrastructure

• 7+ years of mechanical commissioning, engineering, construction, or mission-critical facilities experience, with 10+ years preferred.
• Significant direct data center commissioning experience is required.
• Demonstrated experience leading mechanical commissioning activities through L1–L5 on data center construction projects.
• Proven experience managing Mechanical Cx Engineers and/or field commissioning personnel.
• Demonstrated ownership of commissioning documentation, system turnover, issue management, and client deliverables.
• L5 / Integrated Systems Testing experience required, with previous leadership responsibility strongly preferred.
• Ability to troubleshoot mechanical and controls-related problems during commissioning.
• Ability to read and interpret drawings, P&IDs, specifications, submittals, equipment documentation, and controls sequences.
• Strong leadership, organizational, technical communication, and client-facing skills.

• Bachelor’s degree in Mechanical Engineering, Construction Management, or related technical discipline; extensive relevant field experience may be considered in lieu of a degree.
• PE, CxA, CCP, BCxP, or other relevant professional certification is a plus.
• OSHA 10/30 or equivalent construction safety training.
• Experience with CxAlloy, Facility Grid, Procore, Autodesk Construction Cloud/BIM 360, Bluebeam, or similar platforms.

• Base Salary: $150,000 to $170,000 depending on experience, comprehensive benefits, monthly per diem and mobilization support
• Long-term opportunity within FST’s growing commissioning organization