Senior Mechanical Commissioning Engineer

FST Technical Services; Atlanta (GA); On-site; USD 130,000 - 150,000; Full time

Benefits offered by this job

Comprehensive benefits

Monthly per diem

Mobilization support

Job summary

FST Technical Services is seeking a Senior Mechanical Project Engineer to lead commissioning on large-scale data center projects. You will own system performance from design through execution and mentor junior engineers in the field.

Responsibilities include leading commissioning activities across the full lifecycle, conducting functional and witness testing, and ensuring work stays on schedule, within budget, and to quality standards. Strong HVACR and data center experience are essential.

Responsibilities

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

Job description

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.

Why This Role Stands Out

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.

What You will Do

• 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

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 training

What You Bring

Core 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 experience

Travel Requirements

Travel to project sites as needed based on project demands.

Why FST

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.