Lead Mechanical Commissioning (Cx) Engineer - Data Center

FST Technical Services, Inc.; United States; On-site; USD 150,000 - 180,000; Full time

Benefits offered by this job

Comprehensive benefits

Monthly per diem

Mobilization support

Job summary

FST Technical Services, Inc. is seeking a Lead Mechanical Commissioning Engineer to drive the validation of data-center HVAC and mechanical systems from design through field execution, ensuring performance and reliability.

The role requires 5+ years in commissioning, 3+ years data-center experience, and strong leadership in field environments. Candidates must relocate to Atlanta, Georgia for project deployments, with no remote work, comprehensive benefits, and mobilization support.

Qualifications

• Degree in HVACR, Mechanical or Electrical Engineering.
• 5+ years commissioning engineering experience.
• 3+ years data center experience required.
• Ability to read construction documents.

Responsibilities

• Lead commissioning activities across full data center lifecycle.
• Perform functional and witness testing and validation.
• Manage schedule, budget and quality expectations.
• Mentor junior engineers and support training.

Skills

Commissioning engineering

Data center experience

Project leadership

Strong communication

Education

Bachelor's in HVACR/Mechanical/Electrical Engineering

Tools

BIM experience

AutoCAD/3D CAD

Controls systems

Job description

Lead Mechanical Commissioning (Cx) Engineer - Data Center

Leadthe 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 centersand mission-critical environments tovalidatethat systems are designed, installed, and performing at the highest level.
We are seeking a Senior Mechanical Project Engineer who brings deep technicalexpertise, field leadership, and the ability to drive outcomes in high-performance environments.

Why This Role Stands Out

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.

WhatYou willDo

Project Leadership & Execution

• Lead commissioning activities across the full lifecycle of a data center build to include L1-L5
• 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 training

What You Bring

Core Qualifications

• Degree in HVACR, Mechanical, Electrical Engineering or related field
• 5+years experience in commissioning engineering
• 3+ years of 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, Facility Grid

Travel Requirements

Travel to project sites as needed based on project demands.

Why FST

At FST, we value execution, accountability, andexpertise. Engineers haveopportunities to gain experienceintoleadership roles and work on complex, high-impact projects.

Compensation & Travel Package

• Base Salary: $150,000 to $180,000 depending on experience, comprehensive benefits, monthly per diem and mobilization support
• Long-term opportunity within FST’s growing commissioning organization

Important: This position is not remote or rotational from home. The successful candidate must be willing to mobilize to Atlanta, Georgia and remain site-dedicated for the duration of the project assignment.
No visa sponsorshipavailable. Candidates mustbe authorized towork in the United States.