Battery Production Technician - Electrolyte Mixing & Filling

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 a Battery Production Technician - Electrolyte Mixing & Filling to join our team in Cheonan, South Korea. This person will be responsible for supporting core manufacturing processes, including Electrolyte (EL) Mixing, Filling, and Degassing.

 

In this role, you will:

• Operate the Electrolyte (EL) Mixing process.
• Measure and mix electrolyte and solvents according to SOPs.
• Perform cell filling operations and operate production equipment.
• Carry out the degassing process.
• Report and respond immediately to process abnormalities.
• Record production results and work history.
• Maintain workplace and equipment cleanliness (5S).
• Follow safety procedures when handling electrolytes and chemicals.
• Work closely with engineers to support production.
• Participate in continuous improvement activities.

 

We are looking for people who:

• Associate degree (2–3 year college) or higher.
• Able to work in a clean room environment.
• Able to follow SOPs with a strong sense of responsibility.
• Good teamwork and communication skills.
• Experience in lithium-ion or solid-state battery manufacturing.
• Experience with Electrolyte Mixing or Filling processes.
• Previous cleanroom experience.
• Degree in Chemical Engineering, Materials Science, or a related field.
• Basic English communication skills for working with overseas engineers.

 

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]