Senior Mechanical Commissioning Project Engineer

We’re excited to connect with candidates in Phoenix, AZ; however, this role is based in Atlanta, GA or San Jose, CA. The position offers opportunities for travel and relocation, and we’re seeking candidates who are open to this flexibility. Please note that the role is not based in Phoenix. Monthly per diem and mobilization is on offer.

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.

• 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
• Review design documentation

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

• Complete reports and manage time and expenses

• Mentor junior engineers and support training

• Degree in HVACR, Mechanical, Electrical Engineering or related field
• 7+years experienceor 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 in leadership roles and work on complex, high‑impact projects.

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

Salary range: $130,000 to $150,000