Staff Engineer, Energy Storage

Do you want to work with high-caliber professionals in a dynamic and growing company? Are you entrepreneurial, hard-working, and collegial? Join us at SB Energy, 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, SB Energy is a SoftBank Group company headquartered in Redwood City, California. In 2026, SoftBank Group and OpenAI announced a $1 billion investment to support SB Energy as their leading development and execution partner for data center campuses, while Ares Infrastructure continues its long-standing support of the company's growth. 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. Since its founding, the company has rapidly grown into a top-tier integrated platform with more than 3 gigawatts (GW) in operation and a multi-GW pipeline of energy and data center infrastructure nationwide.

SB Energy also leverages a strong culture of innovation to identify and integrate new technologies into its projects, including its AI-based digital platform, delivering energy infrastructure that is local, reliable, and matched to load. We are building the energy and infrastructure future-today.

Come join us in accelerating the energy and infrastructure transition!

Title : Sr. Energy Storage Engineer

Basic Function:

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 Sr. Energy Storage Engineer will have the ability to work independently while being able to contribute successfully to cross-functional teams. The Sr. Energy Storage Engineer will also have excellent organizational skills, be able to manage multiple projects at once, have excellent follow-through skills, and will have the ability to 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.

Qualifications/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.
• 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 travels.

Location-Redwood City, Anywhere in CA or Denver, CO. Open for remote for right candidates.

  Base Pay -$100000-$140000

The pay range mentioned above is a guideline. We tailor each offer based on your unique skills, experience, location, and market benchmarks-while ensuring internal parity across our teams. The compensation range provided reflects base pay. Total rewards may also include performance-based bonuses, equity grants, and a market leading comprehensive health and wellness benefits package. Final details will be discussed during the later stages of the hiring process.

Our Health & Wellness Benefits

At SB Energy, we invest in our people and their families with benefits designed for flexibility, support, and peace of mind. Full-time employees enjoy:

• 100% Company-Paid Medical, Dental & 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 & Long-Term Disability Coverage
• Flexible Spending Accounts (FSA) for Medical, Dependent Care, Transit & Parking (with company contributions)
• Mental, Physical & Social Wellness Support (with company contributions)
• Flexible Work Arrangements & Hybrid Office Setup Benefits
• Monthly Reimbursement for Phone, Internet & Data
• Optional Legal & Pet Insurance Plans
• Device Purchase Support

At SB Energy, the success of our projects is driven by a desire to see our projects benefit as many people as possible. We work to serve local communities through volunteering, fundraising, and much more. For example, we’re proud to support access and opportunity in engineering and clean energy through impactful mentorship programs and workforce training. When you join SB Energy, you can become a part of these efforts, collaborating with team members who share a vision of building a better future now! 

SB Energy is built on a foundation of collaboration and inclusion. We are proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other legally protected class.

To learn more about us, visit www.sbenergy.com.