Sr. Engineer - BESS Technology SME

Location: Juno Beach, Florida (Onsite)

About the role

An opportunity is available for an innovative and dynamic engineer to serve as the Battery Technology & Sizing Lead in a key Senior Engineering role. The successful candidate will support the team as a Subject Matter Expert (SME) in evaluating existing and emerging energy storage technologies. This role focuses on assessing technology performance, technical maturity, commercial readiness, cost, and applicability to utility-scale projects, while also providing expertise in BESS sizing and system optimization.

Responsibilities

• Serve as a Subject Matter Expert (SME) for utility-scale BESS sizing, providing technical leadership on methodology, assumptions, and optimization.
• Develop and optimize end-to-end BESS sizing, accounting for system losses, degradation, augmentation, temperature, and contractual requirements.
• Own and continuously improve BESS sizing methodologies, calculators, and technical guidance.
• Organize and maintain a clear tracking record of sizing assumptions, inputs, and decisions.
• Review project-specific sizing results, identify optimization opportunities and technical risks, and provide recommendations.
• Maintain sizing tools to ensure the latest BESS and PCS equipment ratings are incorporated.
• Assess and evaluate new and existing battery technologies and their applicability to utility-scale systems.
• Conduct technical evaluations of battery cells, modules, and systems, including degradation, efficiency, and reliability.
• Evaluate non-lithium-ion and emerging energy storage technologies for new use cases.
• Develop preliminary system sizing and CAPEX estimates for alternative energy storage technologies.
• Develop and improve engineering tools that automate BESS sizing, technical evaluations, and battery performance forecasting.
• Partner with software development and other technical teams to translate engineering methodologies into scalable digital tools.

Requirements

• Bachelor's or Master's degree in Electrical Engineering, Mechanical Engineering, Chemical Engineering, Materials Engineering, or a related field.
• Demonstrated expertise in utility-scale BESS sizing and optimization, including AC/DC sizing, degradation, system losses, augmentation/overbuild, thermal impacts, and project-specific operating requirements.

Qualifications

Preferred qualifications include:

• Experience with alternative chemistry technologies, such as flow battery, multi-day storage system, fuel-cell-like technologies, sodium ion battery, and supercapacitor.
• Background in IGBT and SiC inverters.
• Established experience in the energy storage industry with a strong professional network and relationships with major battery and/or PCS vendors.
• Experience applying AI, automation, programming, or advanced data-analysis tools (e.g., Excel/VBA, Python, Power BI) to engineering problems.
• Ability to combine strong engineering fundamentals with an innovative mindset to improve existing engineering processes.
• Excellent document and folder organizational skills.
• Excellent project management, communication, and leadership abilities.
• Willingness to travel to battery manufacturing sites for technology assessments.

About the company

This organization is a large generator of renewable energy from the wind and sun, and a leader in battery storage. The company provides energy-related products and services. The mission is to lead the decarbonization of the U.S. economy while improving customer affordability and reliability.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. The team values innovation, collaboration, and continuous learning.

Benefits

• Medical, dental, vision, life, and disability insurance plans.
• Employee Stock Purchase Program (ESPP).
• 401K program with company match after 12 months of tenure.
• Health Savings Account (HSA) on the HDHP plan.
• SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions.
• Corporate discount savings program and other discounts.
• On-demand training program.
• Access to certification prep, technical and leadership courses/books/seminars after 6+ months of tenure.
• Certification discounts and perks for associations including CompTIA and IIBA.
• Dedicated customer service team and certified Career Coach.