Sr. Commissioning Field Service Engineer; UPS

Marietta, GA, United States | Posted on 03/15/2026

AI Talent Now, LLC is a powerhouse in direct-hire talent acquisition, connecting exceptional talent with industry-leading organizations across IT, Engineering, Financial Services & Fintech, and Manufacturing & Robotics. Headquartered in Atlanta, Georgia, we proudly serve clients and candidates nationwide.

A top-tier leader in critical power solutions is actively seeking a Senior Commissioning Field Service Engineer (UPS) to join their team in Marietta, GA. This is an exciting opportunity to work on cutting-edge power systems and make a real impact in the field.

(UPS) Uninterruptible Power Supply / Critical Power Focus – 5+ Years Experience

Location: Marietta, GA (Must reside within 1 hour or be willing to relocate)

We are seeking a senior-level Data Center Commissioning Technician with deep expertise in UPS systems, critical power infrastructure, and large-scale load testing. This is not a preventative maintenance or parts replacement role. This position requires a commissioning professional who can lead testing events, interface confidently with general contractors and clients, and execute high-risk power transitions in live environments.

The ideal candidate has completed multiple full data center commissioning projects, understands commissioning levels (L2–L5), and has hands‑on experience executing MW-scale load bank testing and generator-to-UPS transfers under load.

• Lead and execute data center commissioning activities (Levels L2–L5)
• Perform and oversee large-scale load bank testing (500kW to 1MW+)
• Commission and validate parallel redundant UPS systems (N+1, 2N)
• Perform static and maintenance bypass transitions without load disruption
• Validate synchronization (voltage, frequency, phase alignment)
• Commission lithium‑ion and VRLA battery systems
• Perform battery discharge testing and string balancing verification
• Identify and troubleshoot DC ground faults and bypass events under load
• Integrate UPS systems with BMS / EPMS platforms
• Execute commissioning from approved MOPs; redline and update documentation
• Ensure compliance with ISO, NFPA, and NEC standards
• Enforce safety standards and stop work when unsafe conditions arise
• Lead multi‑stakeholder commissioning events (GC, EC, CxA, client)

• 5+ years of UPS field service experience
• 3+ years specifically in commissioning
• Completion of at least 3 full data center commissioning projects
• Experience executing load bank tests above 500kW (1MW+ preferred)
• Experience with generator-to-UPS transfers under load
• Experience working in live data center environments
• Demonstrated ability to lead commissioning events

• Eaton
• Toshiba
• Riello / Legrand Trimod
• Static bypass vs. maintenance bypass operation
• Synchronization requirements (voltage, phase, frequency)
• Break-before-make vs. make-before-break transitions
• Wrap‑around bypass systems
• kVA to kW calculations (including 0.9 PF systems)

• Cable sizing and Cam-Lok verification
• Arc flash boundary understanding
• Power Quality Analyzer (PQA) placement
• Cooling capacity verification
• Generator capacity validation

• Commissioning lithium‑ion systems (Samsung SDI, Saft, Narada, etc.)
• VRLA battery systems
• Float voltage tolerances on 480V DC strings
• Ability to lead under pressure in high‑visibility environments
• Confident communicator with contractors and clients
• Strong decision‑making during live power events
• Willingness to stop testing if safety risks are identified
• Highly detail‑oriented with documentation and QA/QC

• Experience executing and redlining MOPs (Method of Procedure)
• Familiarity with QA/QC documentation and test scripts
• Experience preparing commissioning sign‑off packages
• Knowledge of ISO / NFPA / NEC compliant environments

• Closed‑transition generator testing
• Integration of BMS / EPMS during commissioning

• Travel required as needed for commissioning projects
• Must be comfortable with regional or national travel

Compensation will be commensurate with experience and commissioning leadership capability. This is a senior‑level position and will be structured competitively based on technical depth and project leadership experience.

• 5–10 years UPS field service background
• 3+ years dedicated commissioning experience
• Has led or executed 1MW+ load testing
• Comfortable leading MOP execution
• Has experienced real‑world generator transfer challenges
• Strong knowledge of both Lithium‑ion and VRLA battery systems
• Confident presence in front of GCs and clients

Three medical plan options with employer premium contributions that start on day one.

HSA.

401K plan with 100 % match on the first 4% of employee contribution.