Battery Cell Process Engineer (Entry Level) in Mountain View
Job Description
Position: Battery Cell Process Engineer (Entry Level)
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Location: Mountain View CA (Day 1 onsite)
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Hire Type: Contract / Full Time
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The Battery Cell Process Engineer (Pilot Line / Prototyping) will be supporting the fabrication and prototyping of next- battery technology for high-energy applications.
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The vendor will support senior process and cell design engineers by operating and maintaining lab-scale pilot line equipment, building pouch cells systematically, optimizing cell assembly parameters, and ensuring high manufacturing
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quality and repeatability across experimental builds.
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Services and Deliverables:
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• Support end-to-end lab-scale pouch cell fabrication, including slurry mixing, electrode coating, calendering, slitting/die cutting, precision stacking, tab welding, pouch sealing, electrolyte filling, and formation.
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• Operate, calibrate, and maintain pilot line equipment, tooling, dry rooms, and glove boxes to maintain baseline process capability.
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• Execute Design of Experiments (DOEs) for process optimization, identifying critical process parameters (CPPs) to improve cell yield, uniformity, and energy density.
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• Perform in-line quality inspections (e.g., thickness uniformity, loading density, alignment checks, seal integrity) and log fabrication metrics into tracking databases.
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• Troubleshoot fabrication defects (e.g., coating pinholes, delamination, stacking misalignment, poor wetting) and work with senior engineers to implement corrective actions.
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• Document Standard Operating Procedures (SOPs), assembly traveler logs, and safety protocols for new chemistries and form factors.
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Minimum Qualifications (Reference only):
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• Bachelor’s degree in Materials Science, Chemical Engineering, Mechanical
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• Engineering, Electrical Engineering, or equivalent practical experience.
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• 1+ years of practical experience operating lab-scale pilot line equipment for pouch cell fabrication.
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• Hands-on laboratory or cleanroom/dry room experience handling battery materials, chemicals, and mechanical assembly tools.
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• Direct experience or coursework involving lithium-ion cell manufacturing processes (e.g., slurry preparation, slot-die/doctor-blade coating, calendering, stacking, electrolyte filling, etc.).
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• Strong documentation skills, attention to detail in handling delicate pouch cell components, and adherence to lab safety/hazardous materials handling protocols.
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Qualifications (Reference only):
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• Working knowledge of pouch cell fabrication equipment, including tab welding, and electrolyte filling/sealing equipment.
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• Familiarity with statistical process control (SPC), yield analysis, and basic data analysis tools (e.g., Python, MATLAB, JMP, Excel).
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• Understanding of how upstream process variations impact downstream cell quality and electrochemical performance.