Energy Storage Systems Engineer

About the role

You will join a clean energy company deploying utility-scale battery storage projects that firm up renewables and capture wholesale market value. The storage engineering team owns system sizing, technology selection, controls strategy, and performance guarantees from development through operations. This role matters because storage economics live or die on dispatch strategy, degradation modeling, and availability, and your engineering sets all three. You will own the full storage lifecycle from use-case modeling through augmentation planning, since a battery that degrades faster than modeled destroys project returns. The role spans front-of-meter and behind-the-meter applications, each with different dispatch logic, warranty constraints, and revenue stacks. You will be the technical voice in utility and ISO stakeholder processes as interconnection and market rules for storage keep evolving. Safety engineering is central to the job: you will review thermal propagation test results and site layouts against NFPA 855 until every authority having jurisdiction signs off.

What you will achieve

• Size and configure 200+ MWh of battery storage pipeline per year, optimizing duration, augmentation plans, and inverter topology against revenue models
• Deliver dispatch and controls strategies that capture 95 percent or more of modeled merchant and contracted revenue across energy, ancillary, and capacity products, with degradation curves reconciled against manufacturer warranties and field telemetry
• Own degradation and augmentation modeling so warranted capacity and 15-year performance guarantees hold with margin
• Cut commissioning timelines by 20 percent through standardized test plans, FAT/SAT procedures, and EMS integration checklists, stress-tested against low, base, and high price scenarios before any investment decision
• Drive technology selection with bankability-grade comparisons of LFP cell suppliers, PCS options, and thermal management architectures

What you will bring

Must-haves

• 2 to 5 years of experience engineering battery energy storage systems at commercial or utility scale
• Deep understanding of lithium-ion chemistries (especially LFP), degradation mechanisms, and thermal runaway mitigation
• Working knowledge of storage use cases: frequency regulation, energy arbitrage, capacity, and renewable firming
• Familiarity with NFPA 855, UL 9540/9540A, and fire protection requirements for BESS installations
• Ability to model storage dispatch and economics in HOMER, PSCAD, or equivalent tools
• Understanding of inverters, transformers, and medium-voltage interconnection for storage plants
• Strong documentation habits for design bases, test plans, and performance guarantee calculations

Nice-to-haves

• Experience with EMS integration and market bidding interfaces in ISO/RTO markets
• Knowledge of augmentation strategies and warranty negotiation with cell suppliers
• Exposure to hybrid solar-plus-storage plant controls
• EIT certification or progress toward a PE license
• Familiarity with UL 9540, UL 9540A, and NFPA 855 fire safety requirements