Inventory Manager - Battery Mass Production

Factorial Energy is an American solid-state battery company headquartered in Billerica, Massachusetts, focused on developing high-performance energy storage solutions for electric mobility, defense, and AI-driven robotics applications. The company designs and manufactures solid-state batteries that overcome the fundamental limitations of conventional lithium-ion technology, including energy density constraints, weight penalties, and safety concerns associated with liquid electrolytes. Factorial's batteries have demonstrated real-world capability, including powering a vehicle on a drive exceeding 1,200 kilometers on a single charge using solid-state cells. Factorial's mission centers on advancing American technology leadership, economic resilience, and domestic industrialization of next-generation battery technology. The company positions its work as critical to U.S. national security, energy independence, and global competitiveness across the automotive, defense, and robotics sectors. With over 10 years of research and development and more than 150 patents and patent applications, Factorial has built a deep intellectual property portfolio and established partnerships with four top-tier automotive manufacturers, including Stellantis. What distinguishes Factorial is its capital-efficient manufacturing approach: its technology is approximately 80 percent drop-in compatible with existing lithium-ion production infrastructure, significantly reducing the cost and disruption required for partners to transition to solid-state production. The company also employs a proprietary dry-coating process to further enhance manufacturing efficiency and reduce costs. Recent milestones include securing its first commercial aerospace battery order and completing successful flight tests with partner Tulip.

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) that 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 an Inventory Manager - Battery Mass Production to join our team in Cheonan, South Korea. This person will be responsible for managing raw material and finished goods inventory, ensuring inventory accuracy, coordinating material movements to support battery mass production, and optimizing inventory control processes across the supply chain. The Ideal candidate will have strong experience in inventory management within a manufacturing environment, excellent organizational and communication skills, and the ability to work cross-functionally in a fast-paced production setting. Fluency in English is required.

 

In this role, you will:

• Manage inventory of raw materials, consumables, WIP, and finished battery products.
• Ensure accurate inventory transactions and maintain high inventory accuracy in ERP/MES/WMS systems.
• Coordinate material receiving, storage, internal transportation, and shipping activities.
• Support production by ensuring timely material supply to manufacturing lines.
• Monitor inventory levels and work closely with Supply Chain and Production Planning to prevent shortages or excess inventory.
• Lead cycle counts, physical inventories, and inventory reconciliation activities.
• Optimize warehouse layout, storage methods, and material flow to improve efficiency.
• Ensure FIFO/FEFO and proper handling of battery materials and finished goods.
• Collaborate with Quality, Production, Logistics, and EHS teams to resolve inventory and material issues.
• Develop and implement inventory control procedures and continuous improvement initiatives.
• Ensure compliance with safety regulations and company warehouse standards.
• Lead and develop warehouse supervisors, inventory coordinators, and material handlers.

 

We are looking for people who:

• 5+ years of inventory, warehouse, or logistics management experience in a manufacturing environment.
• Experience in battery, automotive, semiconductor, electronics, or other high-volume manufacturing industries is preferred.
• Strong knowledge of inventory control, warehouse operations, and material flow management.
• Experience with ERP, MES, and Warehouse Management Systems (WMS).
• Proficiency in Microsoft Office, especially Excel.
• Experience in lithium-ion battery cell mass production.
• Forklift operator certification/license is highly preferred.
• Knowledge of Lean Manufacturing, 5S, and warehouse optimization.
• Experience handling hazardous materials and battery-related logistics.
• Experience supporting high-volume manufacturing operations.

 

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]