Battery Cell Engineer

Fluence (Nasdaq: FLNC) is a global market leader delivering intelligent energy storage and optimization software for renewables and storage. Our solutions and operational services are helping to create a more resilient grid and unlock the full potential of renewable portfolios. With gigawatts of successful implementations across nearly 50 markets, we are transforming the way we power our world for a more sustainable future. For more information, please visit  fluenceenergy.com . Job Description: Role Overview The Battery Cell Engineer is responsible for driving end-to-end battery development by integrating electrochemical, process, and mechanical engineering concepts into robust, scalable solutions. This role combines deep technical leadership with business technology planning to ensure successful implementation of new battery technologies across product development and manufacturing. The position leads the evaluation, introduction, and qualification of new materials, tooling, and fixtures, while ensuring readiness for production through the preparation and maintenance of Standard Operating Procedures (SOPs) and Bills of Materials (BOMs) for both sample builds and assembly operations. The role also oversees product operational testing, including charge and discharge performance, cycle life validation, and failure analysis, translating data into actionable engineering improvements. In addition, the role is accountable for the design and optimization of battery thermal management solutions, performing simulations, theoretical calculations, and physical testing to validate performance. Through efficiency modeling and service life prediction, the role ensures products meet performance, reliability, and lifetime targets while supporting continuous improvement and innovation in battery technology. Key Responsibilities This role will be responsible for Li-ion battery cell design specification and evaluation of cell and related battery system components from multiple manufacturers. You will be a member of a team focusing on specification and deep evaluation of third-party battery system components and DC systems and their incorporation into Fluence stationary energy storage systems. You will design and propose new research and testing of cell designs and evaluate outcomes of testing. You will guide Fluence cell technology selection and act as a subject matter expert for all strategies related to cell technologies. Track cell roadmaps of cell vendors and incorporate into Fluence system planning Design and qualification of new cell technology platforms by working across cell suppliers to adapt their technologies Drive new technology development with cell suppliers Define key parameters, procedures, and evaluation strategies for battery performance Work with 3rd party labs to evaluate new cell technologies and support development work Simulate cell performance in different aging stages by working with 3rd party lab & supplier Supplier management & communication to let them fully understand FLN battery cell development process & requirements and release corresponding deliverables on time Work with supplier to root cause test failures and production problems Collaboration with different function teams inside company to deliver the product on time Support ongoing/continuous product and process improvement Optimize designs via analytical, numerical, and/or empirical assessments Required Qualifications & Experience Bachelor’s degree or higher in Electrochemistry, Chemical Engineering, Materials Science, or a related field 3 years of experience in battery cell development, testing, qualification, or validation Demonstrated hands-on experience evaluating lithium-based battery cells, with a strong understanding of battery chemistry, performance, and degradation mechanisms Proven ability to translate battery system‑level requirements into cell‑level specifications Experience working with battery test systems, test methodol ... (truncated, view full listing at source)