Senior Mechanical Commissioning Project Engineer-Data Center Construction

FST Technical Services•Chicago, IL
•$150,000 - $170,000•Onsite

About The Position

FST Technical Services is seeking a Senior Mechanical Project Engineer for its Commissioning division, supporting large-scale data center and other mission-critical projects. The role is based in Atlanta, Georgia, or Detroit, Michigan, and requires willingness to travel or relocate, mobilize to the project site, and remain site-dedicated for the duration of the project assignment. It is not remote or rotational from home. Monthly per diem and mobilization support are offered. The engineer leads commissioning across the project lifecycle, taking ownership of system performance from design through execution. The work includes functional and witness testing, system validation, evaluating and troubleshooting mechanical systems, reviewing design documentation, and managing assignments to schedule, budget, and quality expectations. The role also involves leading client meetings, communicating findings, building relationships with clients and contractors, completing reports, managing time and expenses, and mentoring junior engineers. The position requires data center experience and a degree in HVACR, mechanical engineering, electrical engineering, or a related field, along with at least 7 years of experience or 3 years of commissioning experience. Candidates should be familiar with HVAC, controls, automation, and fire safety systems and be able to read construction documents. The role involves field work and the ability to lift 30 pounds. Salary is $150,000–$170,000 depending on experience, with comprehensive benefits, monthly per diem, and mobilization support. Visa sponsorship is not available; candidates must be authorized to work in the United States.

Requirements

  • Degree in HVACR, mechanical engineering, electrical engineering, or a related field.
  • At least 7 years of experience or at least 3 years of commissioning experience.
  • Data center experience.
  • Experience with HVAC, controls, automation, and fire safety systems.
  • Ability to read construction documents.
  • Strong communication and problem-solving skills.
  • Ability to work in field environments and lift 30 pounds.
  • Willingness to travel or relocate, mobilize to the project site, and remain site-dedicated for the project assignment.
  • Authorization to work in the United States; visa sponsorship is not available.

Nice To Haves

  • EIT certification.
  • CEM certification.
  • OSHA 30 certification.
  • BIM experience.

Responsibilities

  • Lead commissioning activities across the full project lifecycle.
  • Execute functional testing, witness testing, and system validation.
  • Manage assignments within schedule, budget, and quality expectations.
  • Evaluate HVAC, chiller, boiler, pump, 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.

Benefits

  • Comprehensive benefits.
  • Monthly per diem.
  • Mobilization support.
  • Long-term opportunity within FST’s growing commissioning organization.
  • Opportunities to gain experience in leadership roles and work on complex, high-impact projects.
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