Commissioning Engineer

Summary

ON.energy develops mission-critical power infrastructure, including medium-voltage UPS and energy storage systems for data centers and grid-connected projects. The Commissioning Engineer will execute system-level commissioning, testing, troubleshooting, systems integration, documentation, and small-team leadership across highly traveled U.S. project sites.

Responsibilities

• Execute system-level commissioning tests including functionality checks, network verification, and performance validation for data center, utility-scale, and C&I energy storage projects
• Support FAT validation and site acceptance testing (SAT) in coordination with OEM and owner engineers
• Perform functional testing of inverters, PCS, BMS, EMS/SCADA, protection relays, and associated BOS equipment
• Identify, document, and resolve commissioning deficiencies; manage punch lists through to closeout
• Manage a subset of the on-site commissioning team (2–10 people), autonomously driving project initiatives as directed by the Senior Commissioning Engineer and management team
• Coordinate daily with EPC contractors, OEM field service engineers, and the ON.energy project and engineering teams to resolve technical challenges and keep milestones on track
• Collaborate with internal and external teams to resolve technical challenges as they arise in the field
• Review and validate configurations for PLC, SCADA, EMS, network infrastructure, and related control systems
• Conduct troubleshooting for control system issues, network faults, and inverter problems
• Verify system configuration against design drawings, specifications, and interconnection requirements
• Support integration and testing of SCADA/DMS communications (DNP3, Modbus, etc.)
• Foster and maintain a culture of safety for all team members on site, owning the Job Hazard Analysis (JHA) and Lockout/Tagout (LOTO) programs
• Support safety inspections and risk assessments throughout the commissioning lifecycle
• Ensure commissioning activities comply with NFPA 70E, NEC, IEEE, and applicable NERC/FERC standards
• Provide field reports and maintain thorough, audit-ready documentation for all commissioning activities

Skills

• 3–6 years of hands-on commissioning experience on BESS, solar + storage, or utility-scale renewable energy projects
• Direct experience with battery storage systems including BMS, PCS/inverter, and EMS/SCADA commissioning
• Proficiency reading and interpreting electrical schematics, single-line diagrams, and P&IDs
• Working knowledge of protection relay testing, CT/PT verification, and DC/AC high-voltage systems
• Strong technical writing skills; ability to produce clear field reports and commissioning documents
• Valid driver's license and US passport
• Ability to travel >80% of the time
• Technically sharp, highly organized, and comfortable leading a small team in fast-paced construction environments
• Strong communicator across EPC, OEM, and internal stakeholders
• Autonomous and accountable
• Safety- and quality-first mindset
• Hands-on experience with one or more major BESS OEMs (Tesla Megapack, BYD, CATL, Sungrow, or similar)
• Familiarity with SCADA communication protocols: DNP3, Modbus TCP/RTU, etc
• Familiarity with utility interconnection processes (distribution and transmission)
• NETA, NICET, or relevant electrical certifications
• OSHA 10 or OSHA 30 certification; NFPA 70E training
• Bachelor's degree in electrical engineering, Power Systems, or a related technical field (or equivalent field experience)

Qualifications

Must Haves

• 3–6 years of hands-on commissioning experience on BESS, solar + storage, or utility-scale renewable energy projects
• Direct experience with battery storage systems including BMS, PCS/inverter, and EMS/SCADA commissioning
• Proficiency reading and interpreting electrical schematics, single-line diagrams, and P&IDs
• Working knowledge of protection relay testing, CT/PT verification, and DC/AC high-voltage systems
• Strong technical writing skills; ability to produce clear field reports and commissioning documents
• Valid driver's license and US passport
• Ability to travel >80% of the time
• Technically sharp, highly organized, and comfortable leading a small team in fast-paced construction environments
• Strong communicator across EPC, OEM, and internal stakeholders
• Autonomous and accountable
• Safety- and quality-first mindset

Nice to Haves

• Hands-on experience with one or more major BESS OEMs (Tesla Megapack, BYD, CATL, Sungrow, or similar)
• Familiarity with SCADA communication protocols: DNP3, Modbus TCP/RTU, etc
• Familiarity with utility interconnection processes (distribution and transmission)
• NETA, NICET, or relevant electrical certifications
• OSHA 10 or OSHA 30 certification; NFPA 70E training
• Bachelor's degree in electrical engineering, Power Systems, or a related technical field (or equivalent field experience)

Benefits

• Hourly, non-exempt, eligible for overtime
• Per diem eligibility while traveling to project sites
• Eligibility for an annual short-term incentive bonus (performance based)
• Medical, dental, and vision insurance for US-based roles
• 401(k) with company match for US-based roles
• Paid time off and company holidays for US-based roles
• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy