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Who We Are Factorial Energy is a pioneering U.S.-based solid-state battery company driving the future of energy storage and electrification. Partnered with global leaders including Mercedes-Benz, Stellantis, Hyundai, and Kia, Factorial is at the forefront of developing next-generation e-mobility platforms for commercial, defense, and consumer applications—spanning electric vehicles (EVs), drones, eVTOL aircraft, power tools, marine systems, robotics, and more. The company has achieved multiple industry firsts, including being the first to power a demonstration vehicle with a global OEM (Mercedes- Benz), which achieved over 1,200 km (749 mi) of range, and the first to earn UN 38.3 certification for automotive-sized lithium-metal solid-state cells, and the first to deliver B-samples of automotive-sized solid-state batteries to major OEMs.   The Opportunity: Factorial Energy is seeking a Cell Test Engineer to join our team in our Cheonan, South Korea location. This person will be responsible for cell testing validation, protocol development, data processing and analysis. The ideal candidate will have experience in cell testing, and capable of interpreting test plans, and collaborating with the development team to complete cell qualifications.   In this role, you will: Developing and optimizing the cell testing system, including processes, standards, specifications, use cases, DVP, report templates, etc Coordinating with customers regarding testing standards, plans and schedules Following up on cell testing, including conducting tests, analyzing results, resolving testing issues and supporting the cell development team in failure analysis Organizing and analyzing cell data, reviewing test reports, establishing a cell database, and compiling automated data processing scripts Tracking and interpreting international standards and regulations, and benchmarking against industry-leading testing standards Managing the testing laboratory and maintaining testing equipment, and planning annual testing requirements Develop new testing schemes   We are looking for people who: Master’s degree  More than four years of relevant experience in cell testing, be familiar with the cell performance testing process and methods, understand the testing standards and safety regulations Able to quickly understand various testing requirements and possess the ability to convert requirements and write test plans, and implement testing work Data analysis skills and be proficient in using data processing software to generate test reports Familiar with the operation and data management of cell testing equipment (such as Neware, etc.), and have equipment maintenance capabilities Have good teamwork and cross-departmental communication and cooperation skills, and be able to effectively communicate and cooperate with personnel from different departments to promote testing progress Understand the working principle of lithium batteries, the mechanism of degradation and influencing factors Possess strong data analysis capabilities and safety awareness in cell testing, be meticulous and sensitive to data Fluent in English   Work Location: Cheonan, South Korea   Factorial Energy is an equal opportunity employer that values diversity at all levels. All qualified applicants, regardless of personal characteristics, are encouraged to apply. To request a reasonable accommodation to complete an application, job interview, and/or to otherwise participate in the hiring process, please contact ( [email protected] )