Principle Energy Storage Engineer

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Full Time Bloomington, MN, US

Salary Range: $ To $ Annually

Principal Energy Storage Engineer (BESS SME)

Geronimo Power develops, owns, and operates large-scale power and affiliated digital infrastructure projects throughout America's Heartland, including solar, wind, energy storage, and powered data parks. As a farmer-founded and community-focused business, Geronimo Power equips landowners and rural communities with sustainable revenue to ignite local economic growth. To learn more about Geronimo Power, visit  or follow the company on Linked In.

Geronimo Power is seeking a Principal Energy Storage Engineer to serve as a subject matter expert for its growing portfolio of utility-scale battery energy storage systems (BESS). This senior individual contributor will provide technical leadership across the full project lifecycle, from development and commercial evaluation through design, interconnection, procurement, contracting, construction, commissioning, operations, and continuous improvement.

The role establishes technical direction, resolves high-impact issues, strengthens engineering practices, and communicates complex technical matters clearly to technical and nontechnical stakeholders. The successful candidate may bring deep battery-storage expertise or advanced, transferable experience in utility-scale power systems.

• Lead BESS engineering across development, design, interconnection, procurement, contracting, construction, commissioning, operations, and asset improvement activities.
• Translate project, commercial, interconnection, safety, operational, and contractual requirements into clear technical criteria, scopes, specifications, and decisions.
• Evaluate BESS architectures and major equipment, including battery enclosures, cells and modules, battery management systems, power conversion systems, medium-voltage collection systems, transformers, protection and controls, plant controllers, energy management systems, SCADA, communications, auxiliary systems, and balance of plant.
• Lead or oversee technical due diligence, conceptual design, sizing, performance evaluation, degradation and augmentation review, availability assessment, and design-basis development.
• Review engineering deliverables for technical accuracy, completeness, constructability, operability, maintainability, code compliance, and alignment with project requirements.
• Manage technical interfaces among BESS suppliers, EPC contractors, engineering consultants, substation and transmission scopes, utilities, RTO/ISOs, construction teams, commissioning teams, and operations personnel.
• Support competitive solicitations, bid evaluations, contract exhibits, technical negotiations, supplier selection, and resolution of exceptions, clarifications, and commercial-technical risks.
• Support project estimating, scheduling, risk assessment, value engineering, procurement planning, and major-equipment decisions.
• Provide field and office support during construction, factory and site acceptance testing, energization, commissioning, performance testing, turnover, and operations.
• Analyze technical data, test results, alarms, trends, failures, and operating performance; lead or support root-cause investigations and drive issues to practical resolution.
• Interpret and apply applicable codes, standards, listing requirements, utility criteria, and industry practices related to BESS safety, fire protection, controls, commissioning, and grid interconnection.
• Develop and maintain owner requirements, design standards, specifications, checklists, lessons learned, technical guidance, and repeatable engineering processes.
• Communicate technical risks, alternatives, recommendations, decisions, and changes in a timely and practical manner.
• Mentor colleagues and share knowledge to strengthen BESS capability across the organization.
• Travel up to 25% based on project needs, including travel to project sites, supplier facilities, offices, and industry events.
• Perform other duties as assigned.

• Bachelor's degree in electrical engineering or another relevant engineering discipline, or an equivalent combination of education and directly applicable experience.
• Typically, eight or more years of progressively responsible engineering experience in battery energy…