U.S. Locations - Data Center Commissioning Engineer; CxE - Mechanical

[2026] Multiple U.S. Locations - Data Center Commissioning Engineer (CxE) - Mechanical - All Levels

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Join to apply for the [2026] Multiple U.S. Locations - Data Center Commissioning Engineer (CxE) - Mechanical - All Levels role at Apollo Mission Critical Engineering

Apollo is a Mission‑Critical Infrastructure Engineering, Construction, Commissioning, and Operations Support Services Company. We serve mission‑critical industries globally with commissioning, emergency response, operations support, and owner’s representative services. Apollo is currently executing projects in multiple states in the United States, in Canada and Brazil.

Multiple U.S. Locations – Atlanta, GA;
Ashburn, VA;
Chicago, IL;
Phoenix, AZ;
Columbus, OH;
Portland, OR;
Jackson, MS

We are seeking skilled and motivated professionals of all experience levels to join our team as Data Center Mechanical Commissioning Engineers (CxEs). The Mechanical CxE will commission mechanical systems in data centers, ensuring they meet top performance and reliability standards. This role requires a deep understanding of mission‑critical environments, meticulous attention to detail, and the ability to work effectively under pressure.

Activities will include testing and/or validation of chillers, water loops/components, cooling distribution equipment, air handling units, air conditioning units, fan coil units, pumps, heat exchangers, cooling towers, humidification systems and Building Management and Automation Systems.

Note:

The Mechanical CxE should also have knowledge of the electrical components involved in the above mechanical systems, including motors, motor control centers, automatic transfer switches, variable frequency drives, control panels and electrical supply systems. This role involves supporting data center construction/commissioning activities, so working hours may include nights and/or weekends. This is an onsite, client‑facing role that may require approximately 90 % or more travel to various client locations.

• Conduct commissioning activities for mechanical systems, their electrical components and BMS systems in data centers.
• Create and implement detailed commissioning plans, procedures, and checklists for Level 2, Level 3, Level 4, and Level 5 systems.
• Review and evaluate design documents, submittals, and equipment specifications.
• Conduct site inspections, functional performance tests, and system verifications.
• Witness testing of all equipment during commissioning and validate sequence of operations.
• Work closely with project teams, including contractors, engineers, and data center operators.
• Help accomplish team goals both on‑site and remotely as necessary.
• Diagnose and resolve system performance, reliability, and safety issues.
• Document results/findings and generate comprehensive commissioning reports.
• Provide support to data center staff on system operation and maintenance.
• Ensure adherence to industry standards, codes, and regulations.
• Attend project meetings and offer technical expertise as needed to help accomplish team goals.
• Other duties as assigned.

• Frequently manipulating, moving, or grasping small parts, devices, or tools.
• Frequently required to remain in a stationary position.
• Frequently moving through office areas, critical facilities and other environments, including tight and confined spaces.
• Exposure to low/high temperatures and outdoor elements such as precipitation and wind.
• Working and walking on different types of terrain on active construction sites.
• Frequently ascending and descending stairs and ladders to access equipment.
• Occasionally positioning oneself under or over equipment.
• Occasionally moving equipment weighing up to 50 pounds.

• Proven experience in commissioning, designing, or constructing mechanical systems, especially in data centers or mission‑critical environments.
• Extensive knowledge of HVAC, electrical supply systems, and control systems.
• Strong communication and interpersonal skills, with the ability to work effectively with cross‑functional teams and clients.
• Excellent problem‑solving skills,…