Senior Mechanical Commissioning Project Engineer

Lead The Systems That Keep Critical Infrastructure RunningAt FST Technical Services, we ensure the most complex facilities operate exactly as intended. Our Commissioning division partners with clients across data centers and mission-critical environments to validate that systems are designed, installed, and performing at the highest level. We are seeking a Senior Mechanical Project Engineer who brings deep technical expertise, field leadership, and the ability to drive outcomes in high-performance environments.This is not a documentation-driven role. This is a position for someone who:Owns system performance from design through executionUnderstands how complex mechanical systems operate as a wholeCan identify and solve issues before they impact operationsYou will work on large-scale, mission-critical data center projects where performance, reliability, and precision are non-negotiable.Project Leadership & Execution • Lead commissioning activities across the full lifecycle • Execute functional testing, witness testing, and system validation • Manage assignments within schedule, budget, and quality expectations Technical Expertise & Problem Solving • Evaluate HVAC, chillers, boilers, pumps, and automation systems • Troubleshoot system performance issues • Review design documentation Client Engagement • Lead meetings and communicate findings • Build relationships with clients and contractors Operational Contributions • Complete reports and manage time and expenses Team Development • Mentor junior engineers and support trainingCore Qualifications • Degree in HVACR, Mechanical, Electrical Engineering or related field • 7+ years experience or 3+ years commissioning • Data center experience required Technical Capabilities • Experience with HVAC, controls, automation, fire safety systems • Ability to read construction documents Professional Skills • Strong communication and problem-solving skills Physical Requirements • Ability to work in field environments and lift 30 lbs Preferred • EIT, CEM, OSHA 30, BIM experienceTravel to project sites as needed based on project demands.At FST, we value execution, accountability, and expertise. Engineers have opportunities to gain experience into leadership roles and work on complex, high-impact projects.Important Notes No visa sponsorship available. Candidates must be authorized to work in the United States. Salary range: $130,000 to $150,000 FST Technical does not offer employment-based visa sponsorship for this position. Applicants must be legally authorized to work in the United States without the need for employer sponsorship now or in the future.