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DESRI (formerly D. E. Shaw Renewable Investments) is a market‑leading owner and operator of renewable energy projects throughout the United States. We have acquired or developed approximately 11.9 gigawatts of contracted capacity across a portfolio of over 80 renewable energy projects in 24 states.

DESRI is seeking a talented and highly motivated individual to join its Engineering and BESS team as a Manager or Director, Battery Engineer, title to be commensurate with experience. This individual will serve as a technical authority for battery energy storage system design, integration strategy, and engineering quality across the development, procurement, and execution of utility‑scale BESS projects.

The role offers the opportunity to shape how DESRI specifies, evaluates, and integrates battery storage systems across both fully integrated OEM solutions and DC block configurations where DESRI leads the integration strategy. You will work closely with procurement, pre‑construction, construction, engineering, and external suppliers to ensure projects are technically sound, executable under EPC delivery models, and aligned with DESRI’s performance and reliability expectations.

You will lead the technical definition and engineering oversight of DESRI’s battery energy storage system balance of system scope from early development through turnover to operations. Responsibilities include defining technical standards, project design requirements, and specifications; reviewing EPC and OEM deliverables for compliance with project requirements, resolving interface issues, and supporting cost optimization efforts as the battery subject matter expert.

• Establish technical standards, basis‑of‑design criteria, and specification packages for battery systems and related plant interfaces.
• Define project‑level BESS design criteria, including LV collection systems, inverter strategy, layout optimization, auxiliary power optimization, and key integration assumptions.
• Translate and ensure compliance with project constraints, interconnection, offtaker, and AHJ requirements, and operating use cases into clear BESS plant design requirements.
• Lead technical review of OEM proposals, design packages, exceptions, deviations, and submittals.
• Define scope boundaries and interface matrices among OEM, EPC, SCADA/controls, and DESRI.
• Support technical diligence for equipment selection, without owning commercial negotiations or sourcing process administration.
• Partner with the BESS Procurement Engineer to ensure supplier technical schedules reflect DESRI’s design intent and interface requirements.
• Serve as the technical escalation point for BESS‑related RFIs, design clarifications, and field engineering issues.
• Review supplier and EPC technical changes for consistency with design intent and project requirements.
• Define the technical basis for (non‑SCADA) commissioning and performance testing of the BESS package.
• Support development and validation of test protocols, acceptance criteria, and performance verification logic.
• Help translate operating lessons learned into updated specifications, design standards, and supplier requirements for future projects.

• An undergraduate degree in engineering, electrical engineering, power systems, or a related technical field.
• Significant experience in utility‑scale battery energy storage engineering, system integration, design review, or product engineering.
• Candidates should have a strong technical foundation in battery energy storage systems and experience supporting the design, construction, operation, troubleshooting, or lifecycle management of complex power systems.
• Strong working knowledge of BMS architecture, PCS/inverters, EMS/plant controls, SCADA interfaces, fire safety systems, transformers, switchgear, and medium‑voltage plant equipment.
• Demonstrated experience developing technical specifications, reviewing OEM/EPC designs, and managing multi‑disciplinary design compliance.
• Experience with system integration across multiple suppliers and disciplines, particularly for utility‑scale BESS projects.
• Strong analytical skills, including the ability to assess technical submittals, test results, and performance data.
• Excellent communication and documentation skills, with the ability to work effectively across development, procurement, construction, commissioning, and external vendors.

• Experience with both fully integrated BESS OEM offerings and DC block / split‑package delivery structures.
• Experience supporting FAT, SAT, commissioning, and performance testing for utility‑scale battery projects.
• Familiarity with project contracts and technical exhibits sufficient to support, but not lead, technical‑commercial negotiations.
• Experience with fire protection engineering deliverables, fire alarm design, NFPA 72 and NFPA 855 requirements for utility‑scale BESS sites.

The expected annual base salary for this position is $150 000 to $180 000. Our compensation and benefits package includes variable compensation in the form of a year‑end bonus, guaranteed in the first year of hire, and benefits including medical and prescription drug coverage, 401(k) contribution matching, paid time off, wellness reimbursement, family building benefits, and a charitable gift match program.