Senior Engineer - Battery Energy Storage Systems

E2 Consulting Engineers•Pasadena, CA

3d•$150,000 - $200,000•Onsite

About The Position

E2 Consulting Engineers, LP is seeking a Senior Engineer to lead engineering and design for utility-scale Battery Energy Storage System (BESS) projects, typically ranging from 10 MW to 500+ MW. The role delivers coordinated designs from early development through detailed engineering and construction support, drawing on experience in power systems, renewable integration, and multi-discipline coordination. It includes work on high-voltage interconnections, battery systems, and grid compliance requirements. The Senior Engineer supports projects through the full lifecycle, from development and design through construction and commissioning. The position also serves as a technical lead for clients, mentors junior staff, and contributes to internal engineering standards and E2’s renewable and storage engineering capabilities. The position operates in a professional office environment using standard office equipment such as computers and phones. Local candidates only. The stated salary range is $150,000–$200,000, with starting salary commensurate with skill, education, experience, and working environment.

Requirements

Bachelor’s degree in Electrical Engineering.
7–12+ years of relevant experience in power systems, renewables, or energy storage.
Demonstrated experience in utility-scale BESS or solar-plus-storage projects.
Strong understanding of medium- and high-voltage electrical systems, inverter-based resources (IBRs), and protection and controls.
Experience with power system study tools such as ETAP, PSCAD, SKM, or PSLF.
Knowledge of applicable codes and standards, including IEEE, NEC, NFPA, UL, and utility standards.
Professional Engineer (PE) license required or ability to obtain.
Ability to sit or stand for up to 8 hours per day.
Ability to move freely for up to 8 hours per day.

Responsibilities

Lead engineering and design of utility-scale BESS projects, typically 10 MW to 500+ MW.
Develop and review one-line and three-line diagrams, AC and DC system layouts, equipment specifications, and grounding, protection, and control schemes.
Define system architecture, including DC-coupled and AC-coupled configurations.
Support interconnection processes and utility coordination; review and interpret system impact and facility studies.
Coordinate or perform load flow, short circuit, protection coordination, and harmonic analysis studies.
Ensure compliance with utility and ISO/RTO requirements, including CAISO and WECC requirements.
Coordinate with civil, structural, and transmission teams on site layout and grading constraints, equipment foundations and trenching, and high-voltage interconnection design.
Coordinate with OEM vendors, including battery suppliers and inverter manufacturers.
Support projects from development through IFC (Issued for Construction) design.
Prepare engineering packages, drawings, and technical reports.
Support procurement by developing technical specifications and evaluating bids.
Assist with project scheduling, cost estimating, and risk identification.
Respond to RFIs and support field engineering during construction.
Review shop drawings and vendor submittals.
Support commissioning activities and system energization.
Serve as a technical lead in client meetings and design reviews.
Support proposals, scope development, and level-of-effort estimates.
Provide clients with technical guidance on BESS technologies and design decisions.
Mentor junior engineers and designers.
Support development of internal standards, templates, and best practices.
Contribute to building E2’s renewable and storage engineering capabilities.