Sr. Engineer - BESS Technology SMEAn opportunity is available for an innovative and dynamic engineer to serve as the Battery Technology & Sizing Lead in a key Sr. 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.
Key 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.
Required Qualifications
Education:
Bachelor's or Master's degree in Electrical Engineering, Mechanical Engineering, Chemical Engineering, Materials Engineering, or a related field.
Experience:
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.
Preferred Qualifications:
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.
Company Overview & Culture:
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. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including Clearly Rateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at accommodations@apexsystems.com or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.
