Sr. Energy Storage Engineer

About the Company

SB Energy is a leading infrastructure company backed by SoftBank Group and Ares Infrastructure, pairing cutting-edge innovation with best-in-class execution. Our mission is to deliver reliable and secure data center and power infrastructure to strengthen America's future. Founded in 2019 and headquartered in Redwood City, California, SB Energy develops, builds, owns, and operates some of the largest and most technically advanced energy and data center infrastructure projects in the United States. With more than 3 gigawatts (GW) in operation and a multi-GW pipeline, we leverage a strong culture of innovation, including an AI-based digital platform, to deliver energy infrastructure that is local, reliable, and matched to load.

About the Role

As a part of the Engineering team, the Sr. Energy Storage Engineer will provide subject matter expertise on Energy Storage design, optimization, final engineering, and construction permitting of utility-scale energy storage projects. The role requires the ability to work independently while contributing successfully to cross-functional teams, with excellent organizational skills to manage multiple projects and meet strict deadlines.

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.

Requirements

• Minimum 8 years of experience in utility-scale Battery Energy Storage Systems (BESS), with significant experience in engineering, EPC execution, or owner's engineering.
• B.S. in Electrical Engineering (Power Systems preferred) from an ABET-accredited university; M.S. and PE license are preferred.
• Strong experience delivering projects through the complete lifecycle, including engineering, procurement, construction, commissioning, and commercial operation.
• Extensive experience working with EPC contractors and resolving engineering, construction, and commissioning issues.
• Strong knowledge of utility interconnection requirements, permitting processes, and coordination with utilities and AHJs.
• Experience supporting inspections, code compliance, and resolving AHJ comments through project completion.
• Deep understanding of lithium-ion battery technologies, PCS, transformers, MV systems, protection and controls, EMS, BMS, SCADA, and plant integration.
• Strong understanding of applicable codes and standards including IEEE, NEC, NFPA, UL, ANSI, and local jurisdiction requirements.
• Experience reviewing engineering calculations, protection studies, grounding, short-circuit, arc flash, relay coordination, and commissioning documentation.
• Experience supporting utility interconnection studies and working with consultants using ETAP, PSCAD, PSS®E, PowerFactory, or similar tools.
• Strong technical writing, communication, and leadership skills with the ability to lead cross-functional engineering efforts.
• Experience supporting vendor selection, technical due diligence, FAT/SAT, and procurement activities.
• Proficiency with AutoCAD, Bluebeam, Microsoft Office, and engineering documentation tools.
• Experience with Python, AI applications, or data analytics is a plus.
• Experience with renewable energy hybrid plants (solar + storage) is a plus.

Travel Requirements

The position requires up to 15% domestic and international travel.

Location

Redwood City, anywhere in California, or Denver, CO. Open to remote for the right candidates.

Pay

The base pay range is $100,000–$140,000. The final offer is tailored based on skills, experience, location, and market benchmarks, while ensuring internal parity. Total rewards may also include performance-based bonuses, equity grants, and a comprehensive health and wellness benefits package.

Benefits

• 100% company-paid medical, dental, and vision for employees and dependents.
• 401(k) with company match.
• Generous paid time off + 11 paid holidays.
• 12 weeks paid parental leave.
• Life, AD&D, and long-term disability coverage.
• Flexible Spending Accounts (FSA) for medical, dependent care, transit, and parking (with company contributions).
• Mental, physical, and social wellness support (with company contributions).
• Flexible work arrangements and hybrid office setup.
• Monthly reimbursement for phone, internet, and data.
• Optional legal and pet insurance plans.
• Device purchase support.

Community Impact

At SB Energy, we work to serve local communities through volunteering, fundraising, and mentorship programs focused on engineering and clean energy. Employees are encouraged to participate in these efforts, collaborating with team members who share a vision of building a better future.