Senior Engineer - Battery Energy Storage Systems

E2 Consulting Engineers, Inc.; Pasadena (CA); On-site; USD 150,000 - 200,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

401(k) with employer match

Paid time off

Job summary

E2 Consulting Engineers, LP in Pasadena, CA is seeking a Senior Engineer to lead engineering and design of utility-scale Battery Energy Storage System (BESS) projects, delivering complete designs from development through construction support.

You will oversee power systems, interconnection work, and multi‑discipline coordination, mentor junior staff, and interface with clients to develop technical scope and estimates.

Qualifications

• Bachelor’s degree in Electrical Engineering.
• 7–12+ years of experience in power systems, renewables, or energy storage.
• PE license required or ability to obtain.

Responsibilities

• Lead the engineering and design of utility-scale BESS projects (10 MW to 500+ MW).
• Develop and review design deliverables: one-line diagrams, layouts, and specs.
• Define system architecture: DC- vs AC-coupled configurations.
• Coordinate interconnection processes and utility coordination.
• Review studies: load flow, short circuit, protection coordination, harmonic analysis.
• Mentor junior engineers and support internal standards.

Skills

Power systems

Energy storage

Electrical design

Interconnection studies

High voltage

Team leadership

Project coordination

Education

Bachelor’s degree in Electrical Engineering

Tools

ETAP

PSCAD

SKM

PSLF

Job description

About the Organization

E2 Consulting Engineers, LP (E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering services including, project engineering and design, federal base operations and infrastructure support services, gas pipeline construction and inspection services, environmental consulting and remediation, and information technology services. At E2, we value safety, innovation and collaboration, and we are dedicated to excellence.

Overview

E2 is seeking a Senior Engineer to lead the engineering and design of utility-scale Battery Energy Storage System (BESS) projects. This role is responsible for delivering complete, coordinated designs from early development through detailed engineering and construction support.

The candidate brings strong experience in power systems, renewable integration, and multi-discipline coordination, with the ability to lead complex projects involving high-voltage interconnections, battery systems, and grid compliance requirements.

Responsibilities

Engineering & Design Leadership

• Lead the engineering and design of utility-scale BESS projects (typically 10 MW to 500+ MW)
• Develop and review key design deliverables, including:
  • One-line diagrams and three-line diagrams
  • AC and DC system layouts
  • Equipment specifications (battery systems, inverters, transformers, switchgear)
  • Grounding, protection, and control schemes
• Define system architecture (DC-coupled vs. AC-coupled configurations)

Power Systems & Interconnection

• Support interconnection processes and utility coordination
• Review and interpret system impact studies and facility studies
• Coordinate or perform studies such as:
  • Load flow
  • Short circuit
  • Protection coordination
  • Harmonic analysis
• Ensure compliance with utility and ISO/RTO requirements (e.g., CAISO, WECC)

Multi-Discipline Coordination

• Coordinate with civil, structural, and transmission teams for:
  • Site layout and grading constraints
  • Equipment foundations and trenching
  • High-voltage interconnection design
• Interface with OEM vendors (battery suppliers, inverter manufacturers)

Project Delivery

• Support project lifecycle 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 in project scheduling, cost estimating, and risk identification

Construction & Commissioning Support

• Respond to RFIs and support field engineering during construction
• Review shop drawings and vendor submittals
• Support commissioning activities and system energization

Client Interface

• Serve as a technical lead in client meetings and design reviews
• Support proposals, scope development, and level-of-effort estimates
• Provide technical guidance to clients on BESS technologies and design decisions

Mentorship & Leadership

• Mentor junior engineers and designers
• Support development of internal standards, templates, and best practices

Contribute to building E2’s renewable and storage engineering capabilities

Qualifications

• Bachelor’s degree in Electrical Engineering (required)
• 7–12+ years of relevant experience in power systems, renewables, or energy storage
• Demonstrated experience in utility-scale BESS or solar + storage projects
• Strong understanding of:
  • Medium- and high-voltage electrical systems
  • Inverter-based resources (IBRs)
  • Protection and controls
• Experience with power system study tools (e.g., ETAP, PSCAD, SKM, or PSLF)
• Knowledge of applicable codes and standards (IEEE, NEC, NFPA, UL, utility standards)
• Professional Engineer (PE) license required or ability to obtain

Benefits

E2 Consulting Engineers, LPoffers an excellent benefits package including health, dental, vision, and life insurance, 401(k) with employer match, paid time off.

Wage Data Per State Requirements

Salary range for this position is $150,000 - $200,000. The starting salary will be commensurate with skill, education, experience, and working environment.

Work Environment/Physical Demands

Work Environment

This job operates in a professional office environment and uses standard office equipment such as computers and phones.

Physical Demands

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• Ability to sit/ stand for up to 8 hours per day.
• Ability to move freely for up to 8 hours per day.

Local Candidates only

Yes

Drug Free Workplace

E2 Consulting Engineers, LPis a Drug Free Workplace. After accepting an offer of employment, applicants may be required to undergo background checks, drug testing, and/or fit-for-duty physical examination. Drug screens will include, but not be limited to, Amphetamines, Cocaine Metabolites, Marijuana Metabolites (THC), Opiates, and Phencyclidine (PCP). As a federal contractor, E2 cannot permit employees in certain positions to use medical marijuana, even if prescribed by an authorized physician.

Solicitation

Please no solicitation of any kind from agencies, staffing, or recruiting firms.

EEO Statement

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.