Assembly Equipment Technician

Factorial Energy

Cheonan, South Korea

Full Time

Posted August 14, 2026

Energy Storage

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Job Description

Factorial Energy is a pioneering U.S.-based solid-state battery company driving the future of energy storage and electrification.

Key Responsibilities

Factorial Energy is seeking an Assembly Equipment Technician to join our Cheonan, South Korea site. This role takes charge of daily operation, troubleshooting, routine maintenance, and minor optimization of core assembly equipment, including Notching, Stacking, Welding, and Sealing machines for Silicon Power Cell pouch cell lines. The incumbent will conduct on-site equipment debugging, abnormality disposal, regular preventive maintenance, support pilot trials and mass production ramp-up, assist engineers in equipment retrofitting and parameter verification, and maintain stable running of assembly stations. You will operate in a fast-growing, early-stage battery manufacturing environment with cross-functional global collaboration.
Perform daily startup inspections, routine preventive maintenance, and breakdown troubleshooting for Notching, Stacking, Ultrasonic Welding, and Sealing assembly equipment to minimize unplanned downtime.
Complete regular equipment lubrication, part replacement, fixture cleaning, and calibration
Record maintenance logs, equipment failure data, and spare parts consumption records completely.
Adjust basic machine process parameters, positioning coordinates, tension, and compaction pressure on site to mitigate common defects such as stacking misalignment, tab welding void, sealing leakage, and notching burr.
Assist equipment engineers in prototype debugging, FAT/SAT on-site acceptance, EVT/DVT/PVT pilot tests, NPI new product trials, and mass production parameter verification.
Cooperate with production, process, and quality teams to handle on-site equipment abnormalities, follow up on improvement actions, and support CAPA implementation for recurring machine issues.
Support minor equipment retrofits, fixture replacement, and multi-spec pouch cell product changeover; feed back equipment structural and functional defects to vendors and the engineering team.
Monitor real-time equipment running status, collect abnormal data, summarize recurring failure modes, and propose simple optimization suggestions to improve line OEE and production yield.
Strictly follow equipment SOP, safety operation rules, and IATF 16949 on-site management requirements to standardize daily equipment operation and maintenance work.

Requirements

College diploma or above, majoring in Mechatronics, Mechanical Maintenance, Electrical Automation, or related technical disciplines.
2+ years of hands-on maintenance experience in a lithium battery assembly workshop, familiar with Notching, Stacking, Tab Welding, or Cell Sealing automation equipment.
Able to independently complete equipment daily maintenance, breakdown diagnosis, and on-site minor adjustments; understand basic servo, cylinder, CCD positioning, and pneumatic/hydraulic control principles.
Capable of reading simple mechanical and electrical sketches; proficient in fixture disassembly, assembly, and replacement.
Familiar with workshop 5S, equipment maintenance record management, and able to fill maintenance, failure, and production shift logs accurately.
Strong on-site problem response capability; able to cooperate cross-functionally with production, quality and engineering staff.
Basic English reading ability for equipment operation manuals and simple technical instructions; basic Chinese communication capability is preferred.
Able to work shift schedules, adapt to a mass production workshop working environment, and possess strong safety awareness and execution ability.
Rich hands-on experience maintaining full set assembly line equipment covering Notching, Stacking, Welding and Sealing processes.
Working experience in battery manufacturers with mass production stacking & sealing line maintenance background.
Practical experience supporting silicon anode / high-expansion electrode pouch cell assembly equipment debugging and maintenance.
Experience supporting pilot line trial production and equipment transfer from lab to mass workshop.
Basic knowledge of IATF 16949 workshop site management, PFMEA, and equipment abnormality closed-loop management.
Work Location: Cheonan, South Korea