Lead Battery Storage Engineer - Utility-Scale

Doist; San Francisco, Denver, San Diego (CA, CO, CA); On-site; USD 140,000 - 230,000; Full time

Job summary

SB Energy, a SoftBank Group company headquartered in Redwood City, California, is seeking a Sr. Energy Storage Engineer to lead utility-scale energy storage design, optimization, and permitting.

You will work with cross-functional teams to deliver high-quality, cost-effective projects on aggressive schedules. The role requires deep expertise in lithium-ion storage systems, PCS, transformers, MV equipment, EMS/BMS/SCADA, and stringent interconnection standards.

Qualifications

• Minimum 8 years of experience in utility-scale Battery Energy Storage Systems.

Responsibilities

• Create and maintain Energy Storage engineering standards, technical specifications, and design requirements to ensure quality, reliability, constructability, and cost optimization.
• Lead technical reviews of utility-scale BESS projects through development, detailed design, construction, commissioning, and handover.
• Support Engineering and Construction teams by reviewing EPC deliverables and driving design optimization for cost, schedule, reliability, and operability.
• Develop and review preliminary electrical designs, site layouts, equipment sizing, single-line diagrams, and balance of plant (BOP).
• Lead technical evaluation and selection of batteries, PCS, transformers, MV equipment, EMS, BMS, SCADA, and auxiliary systems.
• Review and approve EPC engineering packages, calculations, RFIs, submittals, shop drawings, FAT/SAT plans, and commissioning procedures.
• Provide engineering support during construction by resolving technical issues, reviewing field changes, and coordinating with EPCs, OEMs, utilities, and AHJs.
• Lead technical discussions with utilities, AHJs, independent engineers, and code officials to resolve design and permitting issues.
• Support interconnection studies, system modeling, and compliance with utility, ISO/RTO, IEEE, UL, NFPA, NEC, and local code requirements.
• Lead commissioning activities, performance testing, substantial completion, and final project acceptance.
• Visit battery, PCS, and major equipment manufacturers to support technical due diligence, factory acceptance testing (FAT), and procurement activities.
• Support procurement by performing technical evaluations, developing approved vendor lists, and managing technical bid evaluations.
• Support Operations & Maintenance teams by providing troubleshooting and long-term technical guidance.
• Review emerging energy storage technologies and support pilot projects for next-generation storage solutions.
• Serve as the technical subject matter expert for Energy Storage across the organization.

Skills

Electrical Engineering

Power Systems

BESS

Project Leadership

Interconnection & Permitting

Team Collaboration

Equipment Selection

Education

B.S. in Electrical Engineering

M.S. in Electrical Engineering

PE license

Tools

SCADA

BMS

EMS

Job description

SB Energy, a SoftBank Group company headquartered in Redwood City, California, is seeking a Sr. Energy Storage Engineer to lead utility-scale energy storage design, optimization, and permitting.

You will work with cross-functional teams to deliver high-quality, cost-effective projects on aggressive schedules. The role requires deep expertise in lithium-ion storage systems, PCS, transformers, MV equipment, EMS/BMS/SCADA, and stringent interconnection standards.