Senior Power Systems Engineer

NuEnergy Storage Technologies; United States; On-site; USD 120,000 - 190,000; Full time

Job summary

NuEnergy Storage Technologies is seeking a Senior Power Systems Engineer to design, integrate and commission battery energy storage systems, from data center rack systems to grid-scale BESS. You will own the electrical design from concept through energization, working with customers, utilities and field teams.

You will lead power system studies, coordinate BBUs with UPS, generators and switchgear, and ensure safe operation with NEC, UL, IEEE and NFPA standards.

Qualifications

• BS in Electrical or Power Engineering.
• 3–5+ years in power systems with BESS, BBU/UPS, data center or grid project experience.
• Knowledge of lithium-ion systems (LFP, NMC), BMS and inverter/PCS operation.
• Experience with ETAP, SKM, PSS/E or similar, and AutoCAD Electrical.
• Familiarity with NEC 706/705, UL 9540, UL 1973, NFPA 855 and IEEE 1547.

Responsibilities

• Design BESS electrical systems: single-line diagrams, DC/AC architecture, protection, grounding and equipment sizing.
• Design and integrate rack-level BBUs for data centers (OCP Open Rack V3, 48 V and HVDC).
• Coordinate BBUs with UPS, generators, switchgear and ATS/STS for seamless backups.
• Develop front-of-meter and behind-the-meter storage for grid services, peak shaving and data center backup.
• Integrate BMS, PCS/inverters, UPS and EMS/SCADA controls, and define operating modes.
• Run power system studies (load flow, short circuit, arc flash, coordination, harmonics).
• Lead FAT/SAT testing, field commissioning and troubleshooting, including root-cause analysis.
• Prepare utility interconnection packages and ensure NEC, UL, IEEE and NFPA compliance.

Skills

Power systems

BESS/BBU/UPS

Data center/grid experience

Lithium-ion knowledge

BMS/inverter/PCS operation

Education

BS in Electrical or Power Engineering

Tools

ETAP

SKM

PSS/E

AutoCAD Electrical

Job description

Battery & Energy Storage Systems (ESS)·NuEnergy Storage Technologies

Senior Power Systems Engineer

Battery & Energy Storage Systems (ESS)·NuEnergy Storage Technologies

About the role

NuEnergy Storage Technologies is hiring a Senior Power Systems Engineer to design, integrate and commission battery energy storage systems, from data center BBU rack systems to grid-scale BESS. You will own the electrical design of our storage projects from concept through energization, working closely with customers, utilities and field teams.

Responsibilities

• Design BESS electrical systems: single-line diagrams, DC/AC architecture, protection, grounding and equipment sizing.
• Design and integrate rack-level BBUs for data centers (OCP Open Rack V3, 48 V and HVDC), sized for hold-up time, AI/GPU loads and N+1/2N redundancy.
• Coordinate BBUs with UPS, generators, switchgear and ATS/STS so backup transfers are seamless.
• Develop front-of-meter and behind-the-meter storage for grid services, peak shaving, demand response and data center backup.
• Integrate BMS, PCS/inverters, UPS and EMS/SCADA controls, and define operating modes.
• Run power system studies (load flow, short circuit, arc flash, coordination, harmonics).
• Lead FAT/SAT testing, field commissioning and troubleshooting, including root-cause analysis.
• Prepare utility interconnection packages and ensure NEC, UL, IEEE and NFPA compliance.

Requirements

• BS in Electrical or Power Engineering.
• [3–5]+ years in power systems, with BESS, BBU/UPS, data center or grid project experience.
• Knowledge of lithium-ion systems (LFP, NMC), BMS and inverter/PCS operation.
• Experience with ETAP, SKM, PSS/E or similar, and AutoCAD Electrical.
• Familiarity with NEC 706/705, UL 9540, UL 1973, NFPA 855 and IEEE 1547.

Preferred

• PE license or EIT.
• Experience with hyperscale or colocation data centers and OCP specifications.
• Experience with utility-scale BESS (10 MW+) or grid-forming inverters.
• Knowledge of Modbus, CAN and DNP3; Python or MATLAB for modeling.
• NFPA 70E arc flash training.