Sr. Commissioning Field Service Engineer (UPS)

High-Level Data Center Commissioning position

Position Summary

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 (L2L5) and has hands-on experience executing MW-scale load bank testing and generator-to-UPS transfers under load.

Key Responsibilities

• Lead and execute data center commissioning activities (Levels L2L5)
  
• Perform and oversee large-scale load bank testing (500kW to 1MW)
  
• Execute generator-to-UPS transfer testing under live load
  
• Commission and validate parallel redundant UPS systems (N1 2N)
  
• Perform static and maintenance bypass transitions without load disruption
  
• Conduct closed-transition generator testing
  
• 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)
  

Required Experience

• 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
  

Required Technical Expertise

UPS Platforms (Must Have Experience with Multiple)

• Eaton
  
• Delta
  
• Schneider Galaxy
  
• Vertiv Liebert
  
• Toshiba
  
• Mitsubishi
  
• Riello / Legrand Trimod
  

Power Systems Knowledge

• 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)
  

Load Banking & Testing

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

Battery Systems

• Commissioning lithium-ion systems (Samsung SDI Saft Narada etc.)
  
• VRLA battery systems
  
• Float voltage tolerances on 480V DC strings
  
• String balancing verification
  
• Discharge testing procedures
  

Leadership & Professional Competencies

• 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
  

Documentation & Process Experience

• 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
  

Preferred / Elite Experience (Highly Desired)

• Commissioned parallel redundant UPS systems (N1 2N)
  
• Closed-transition generator testing
  
• Integration of BMS / EPMS during commissioning
  
• Experience in Tier III or Tier IV data centers
  
• Experience on multi-megawatt (MW) facilities
  

Travel

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

Compensation

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.

Requirements

Ideal Candidate Profile

• 510 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
  

Benefits

Competitive Pay

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