Job Opportunities API

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, the first to deliver B-samples of automotive-sized solid-state batteries to major OEMs.  The Opportunity: Factorial Energy is seeking an Electrode Process Engineer/ Senior Engineer to join our team in our Cheonan, South Korea location. This person will be responsible for  the development, optimization, and scale-up of anode and cathode electrode manufacturing processes for our Silicon Power Cell line, owning the full electrode process chain from slurry mixing and coating through  calendaring  and slitting. The ideal candidate brings deep hands-on  expertise  in wet electrode processes and slurry  rheology and  is comfortable translating lab-scale breakthroughs into scalable, high-yield manufacturing processes in a fast-moving environment.   In this role, you will: Lead development and optimization of anode and cathode electrode processes for Si-based power cells, including slurry mixing, slot-die coating, drying, calendaring, and slitting   Define and maintain process windows for slurry rheology, coating weight, thickness uniformity, calendaring density, and adhesion strength   Establish and maintain SOPs, PFMEA, and Control Plans for all electrode process steps, defining CTQs and process parameters   Develop electrode formulation strategies to accommodate silicon anode expansion/contraction behavior while maintaining coating stability and adhesion   Design and optimize high-solid slurry mixing sequences, dispersion conditions, and deaeration protocols for both anode (Si/C) and cathode (NCM/NCA) systems   Control slurry rheology to ensure coating stability, minimize defects (pinholes, streaks, edge beading), and achieve thickness uniformity   Optimize slot-die coating parameters including coating speed, gap, pump rate, and drying profile   Develop process-structure-performance correlations linking slurry properties and coating conditions to electrode quality and cell performance   Define calendaring conditions to achieve target porosity and density while minimizing spring back and cracking risk for high-Si electrodes   Optimize slitting conditions to minimize burr generation, edge defects, and web breakage   Lead electrode process transfer from lab/pilot scale to new line, including process condition setting, trial runs, and ramp-up support   Participate in NPI stage-gate reviews (EVT/DVT/PVT/MP) and ensure electrode process readiness at each phase   Support FAT/SAT and equipment qualification (IQ/OQ/PQ) for coating, calendaring, and slitting equipment   Apply DOE, SPC, and FMEA methodologies to identify root causes of electrode defects and drive yield improvement   Partner with QA/QE to define incoming material inspection criteria and electrode quality standards   Work closely with R&D, cell design, equipment, and production teams to align electrode process requirements with cell performance targets   We are looking for people who: Have 3+ years