Senior / Staff Power Cell Development Engineer

Factorial Energy seeks a Senior Power Cell Development Engineer in South Korea. You will lead the development of next-gen cell products, focusing on silicon-based drone cells and LMB power cells. Enjoy the opportunity to work with industry leaders and contribute to innovative energy storage solutions. Become a Senior Power Cell Development Engineer with Factorial Energy in South Korea, a leader in solid-state battery technology. In this role, you will drive the development of next-generation cell products, focusing on silicon-based drone cells and lithium-metal batteries. Collaborate with global partners, validate performance, and lead new product initiatives. Factorial offers a dynamic work environment and the chance to shape the future of energy storage.

Factorial Energy South Korea On-site Full Time UTC+09:00

Factorial Energy

Company Overview

Name

Factorial Energy

Headquarters

Woburn, Massachusetts, United States

Founded

2013

Size

Approximately 150 employees (source: linkedin.com). Factorial has raised over $65 million and achieved a $1 billion valuation (source: batteryburnbook.com).

What They Do

Factorial Energy specializes in the development of solid-state batteries, which are pivotal for various applications including electric mobility, defense, AI/robotics, aviation, power tools, marine vehicles, consumer electronics, and energy storage systems. Their technology emphasizes high energy density, achieving 350-450 Wh/kg compared to the 200-300 Wh/kg typical of current electric vehicle (EV) cells. Additionally, Factorial's batteries are designed for enhanced safety, fast charging capabilities, and a wide operational temperature range from -30°C to 45°C (source: factorialenergy.com).

The core of their innovation lies in the Factorial Electrolyte System Technology (FEST®), which utilizes a quasi-solid polymer electrolyte combined with an ultrathin lithium-metal anode and a high-capacity cathode. This technology allows for approximately 80% compatibility with existing lithium-ion production lines, facilitating scalability and integration into current manufacturing processes (source: factorialenergy.com).

Complementary technologies such as Solstice™, a sulfide-based all-solid-state electrolyte, and Gammatron™, an AI-driven battery digital twin software, further enhance their offerings. Solstice™ boasts high thermal stability and zero liquid content, while Gammatron™ accelerates R&D in electrolyte development and battery management systems (source: enertherm-engineering.com).

Projects & Track Record

Factorial Energy has achieved significant milestones in battery development, including a series of prototypes that have progressively increased in capacity and complexity. Notable achievements include the validation of 0.6 Ah Li-metal chemistry in 2017, the introduction of a 40 Ah 30-layer graphite anode prototype in 2021, and the unveiling of a 106 Ah automotive B-sample cell at CES 2023. These advancements demonstrate Factorial's commitment to pushing the boundaries of solid-state battery technology (source: factorialenergy.com).

Recent Developments

In October 2023, Factorial Energy inaugurated its $50 million manufacturing facility in Methuen, Massachusetts, which is set to be the largest solid-state battery production line in the U.S. with a capacity of 200 MWh. This facility is expected to significantly enhance their production capabilities and support the scaling of automotive applications (source: waveep.com).

In 2024, the company shipped 106 Ah B-samples to various OEMs and unveiled their Solstice™ technology after a period of stealth development. Additionally, they have been recognized as a leading player in the deep tech sector, ranking #25 among the Top 100 Private Deep Tech Companies (source: factorialenergy.com).

Working There

Factorial Energy is actively hiring across various departments including R&D, manufacturing, sales, and engineering, particularly in response to their recent expansion efforts. The Methuen facility is expected to create over 150 jobs, contributing to the local economy while supporting the company's growth in solid-state battery production. The company culture emphasizes speed and innovation, with a focus on ethical governance and sustainability goals, including a commitment to carbon-neutral production by mid-2030 (source: factorialenergy.com).

Contact

Website · Careers · LinkedIn

Last updated on 2025-12-27 | Report an issue

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

We are looking for a Senior / Staff Power Cell Development Engineer who will be responsible for Factorial's next-generation cell product development and cell technology. The successful candidate will assume a cell engineering and development role and join Factorial's team in South Korea. This role will execute new platform development for silicon-based drone cells and LMB power cells in accordance with the technical roadmap, including material, formula, and process evaluations to enable product realisation. The role involves designing cell products according to customer requirements and validating performance, including electrochemical and safety performance, while driving continuous optimization. The engineer will lead NPI activities and be responsible for preparing and releasing all related documentation, including BOMs, DFMEAs, and a sample-building index. The role will participate in technical discussions with customers related to new product development programs and support battery material development, including cathodes (high-nickel NMC), anodes (graphite with silicon-based materials and lithium metal), separators, binders, and current collector foils, while also supporting other internal departments on cell product-related technical issues.

Duties and Responsibilities for the power cell development engineer (cover Si drone and LMB power cell)

Base on the technical roadmap to conduct the new platform development including the material, formula, process evaluation to make it come true.
Base on the customer requirements to design the cell products. And validate the performance including electrochemical/safety performance, then conduct the continuous optimization.
Lead the new produce NPI, Responsible for all the related documents preparation and release, including the BOM, DFMEA and sample building index,
Follow up the sample building and solve the issue, lead the FA
Join the discussion with customers about the new product development-related topic.
Support battery materials developments, for example: cathode (high Ni NMC), Anode (graphite+SiC, Li metal), Separator, new binder, collector foil etc.
Support the other departments for the cell product related issues.

Requirements

At least mater degree
At least 3years of power cell or drone cell product development experience. Know the lithium-ion battery and lithium metal battery very well. Can lead the product development independantly.
Good FA/problem solving/data analysis capability
Good communication with English.
Rich experience for customer communication.

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])