Senior Mechanical Commissioning Engineer

Lead the Systems That Keep Critical Infrastructure Running

At 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 execution
• Understands how complex mechanical systems operate as a whole
• Can identify and solve issues before they impact operations

You will work on large-scale, mission-critical data center projects where performance, reliability, and precision are non-negotiable.

• Lead commissioning activities across the full lifecycle
• Execute functional testing, witness testing, and system validation
• Manage assignments within schedule, budget, and quality expectations

• Evaluate HVAC, chillers, boilers, pumps, and automation systems
• Troubleshoot system performance issues

• Lead meetings and communicate findings
• Build relationships with clients and contractors

• Complete reports and manage time and expenses

• Mentor junior engineers and support training

Core Qualifications

• Degree in HVACR, Mechanical, Electrical Engineering or related field
• 7+ years experience or 3+ years commissioning
• Data center experience required

• Experience with HVAC, controls, automation, fire safety systems
• Ability to read construction documents

• Strong communication and problem-solving skills

• Ability to work in field environments and lift 30 lbs

• EIT, CEM, OSHA 30, BIM experience

Travel 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.

Base Salary: $130,000 to $150,000 depending on experience, comprehensive benefits, monthly per diem and mobilization support

No visa sponsorship available. Candidates must be authorized to work in the United States.