Senior Engineer - Battery Energy Storage Systems (BESS)

What You Can Expect

As a Battery Energy Storage Systems (BESS) Senior Engineer within Renewables Flex Power Business Unit (RFGBU) in North America, you will play a key role in developing advanced battery energy storage solutions, with a focus on lithium-ion technologies. You’ll collaborate with Subject Matter Experts (SMEs) to define system requirements, design battery systems, specify components, and support both business development and operations teams.

 

Your responsibilities will span the full project lifecycle—from initial design and sizing through development, installation, commissioning, and operation. You’ll generate detailed bills of materials for cost evaluation and serve as the primary engineering interface for EPC partners, ensuring technical excellence throughout project execution.

 

What You Will Do:

• Lead the design and development of lithium-ion Battery Energy Storage Systems (BESS), including system sizing, layout, and component specification, in collaboration with Subject Matter Experts (SMEs)
• Oversee all technical aspects of project execution—from design through commissioning and operation—serving as the primary engineering interface for EPC partners and Owner’s Engineers
• Support business development by identifying technical requirements, engaging with utilities and Authorities Having Jurisdiction (AHJs), and contributing to proposals and cost evaluations
• Review and ensure compliance with system designs and drawings with ENGIE standards, NEC, IEEE, and other applicable codes and regulations
• Independently lead and collaborate with project teams to deliver high-quality electrical engineering, including oversight of consultants and contractors, ensuring compliance with company policies, safety standards, interconnection agreements, and overall project objectives
• Generate and update site layouts, grading and stormwater plans, single‑line and utility diagrams, and incorporate external survey, geotechnical, and consultant drawings—maintaining company CAD standards
• Support Operations & Maintenance (O&M) teams through training, troubleshooting, and staying current on emerging technologies, industry standards, and regulatory changes

 

What You’ll Bring

• Minimum of a Bachelor's Degree in Electrical or Mechanical Engineering or related field
• At least five (5) years of experience in renewable systems engineering, with a focus on battery energy storage
• Extensive technical expertise in battery energy storage systems (BESS), including inverters, transformers, substations, protection and controls, battery management and energy management systems
• Proven experience managing projects across the full lifecycle—from design through commissioning—while collaborating with EPCs, SMEs, and O&M teams
• Analytical and problem-solving skills applied to complex BESS challenges, including system integration and performance optimization
• Proficiency in creating, reading, and interpreting construction plans and technical specifications
• Advanced AutoCAD Civil 3D experience to create and revise full civil drawing sets for utility‑scale BESS sites
• Excellent communication skills and the ability to engage effectively with internal stakeholders, utilities, and regulatory authorities

 

Additional Details

• This role is eligible for our hybrid work policy
• Must be available to travel domestically up to 30% of the time and with the need for some overnight trips
• Must be willing and able to comply with all ENGIE ethics and safety policies

 

Compensation

Salary Range: $99,000 – $151,800 USD annually

 

This represents the average expected pay range for a qualified candidate.

 

ENGIE complies with all federal, state, and local minimum wage laws. Actual salary offered may vary depending on geography, experience, education, internal pay alignment, or other bona fide factors. 

 

In addition to base pay, this position is eligible for a competitive bonus / incentive plan.

 

Your Talent Acquisition Partner can share more specific information regarding the benefits or the salary for the position based on the work location.

 

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