---
title: 'Assembly Equipment Technician at Factorial Energy'
canonical: 'https://feeny.ai/job/assembly-equipment-technician-factorial-energy-cheonan-south-0exffe0v1s9h'
type: 'job'
last_seen: '2026-09-16'
---

# Assembly Equipment Technician at Factorial Energy

- **Company:** Factorial Energy
- **Location:** Cheonan South, South Korea
- **Posted:** 2026-08-14
- **Last confirmed live:** 2026-09-16
- **Apply:** https://job-boards.greenhouse.io/factorialenergy/jobs/6144180004

## Job description

## 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 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.

In this role, you will:

- 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.

We are looking for people who:

- 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.

## Preferred Qualifications

- 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

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 (recruitment@factorialenergy.com)

## About Factorial Energy

## Company Overview
- **One-liner**: Factorial Energy is a U.S. developer of high‑performance solid‑state battery technology for eMobility, defense, robotics, and hyperscale data centers.
- **Entity Type**: Public (Nasdaq: FAC)
- **Headquarters**: Billerica, Massachusetts, USA
- **Founded**: 2013 (spun out of a heritage company founded from Cornell University)
- **Founders**: Siyu Huang (Ph.D/MBA, CEO) and Alex Yu (Ph.D, CTO)

## Core Business
- **Primary industry**: Battery technology / Energy storage (solid‑state lithium‑metal batteries)
- **Target customers**: B2B – automotive OEMs, defense & aerospace contractors, robotics manufacturers, hyperscale data‑center operators
- **Mission**: “We purposefully pursue milestones to scale a high‑performing product that brings us closer to a greener future.” The company states it is “all charged up to save the planet, empower people, and advance our industry.”

## Products & Services
- **FEST® (Factorial Electrolyte System Technology)** – Proprietary solid‑state electrolyte platform. The company has delivered 40 Ah and 106 Ah automotive‑grade B‑samples to global OEMs and demonstrated a 100+ Ah cell at CES.
- **Solstice™** – Multi‑layer solid‑state battery platform (next‑generation architecture) designed for drones, robotics, and automotive applications.
- **Manufacturing Technology** – 80 % drop‑in compatible with existing lithium‑ion production lines; proprietary dry‑coating process to enhance efficiency and reduce cost.

## Market Standing
- **Valuation/Market Cap**: ~$1.3 billion equity value (as of June 2026 IPO via SPAC with Cartesian Growth Corporation III)
- **Key Metric**: Gross proceeds of more than $100 million from the SPAC transaction (revenue not yet publicly disclosed as the company just entered public markets)
- **Notable Investors/Partners**: In‑Q‑Tel (strategic investor for U.S. national security), Mercedes‑Benz, Stellantis, Hyundai Motor Company, Kia Corporation; board includes former Daimler CEO Dieter Zetsche and former Stellantis CTO Michael Bly
- **Growth Signals**: Completed Nasdaq listing in June 2026; real‑world road testing with Mercedes‑Benz achieved over 1,200 km range on a single charge; expanded into defense, aerospace, and hyperscale data‑center segments; 150+ patents and patent applications

## Competitive Advantages
- **Capital‑light model**: Joint manufacturing partnerships allow rapid, scalable deployment without massive factory investment.
- **Drop‑in compatibility**: 80 % compatible with existing lithium‑ion production lines, lowering adoption barriers for partners.
- **Proprietary dry‑coating process**: Reduces cost and energy use while improving performance.
- **Strong IP portfolio**: Broad patent estate covering electrolyte, cell design, and manufacturing processes.

## Strategic Focus
- **Scale to volume**: Progress toward the first U.S. solid‑state production program for passenger vehicles.
- **Market diversification**: Penetrate defense, aerospace, robotics, and data‑center energy storage beyond automotive.
- **Sustainability**: Achieve carbon neutrality by mid‑2030; develop end‑of‑life recycling (partnered with Young Poong for lithium‑metal recycling); sustainable and regionalized supply chain.

## Why Work Here
- **Culture & values**: “SMAHRT” – Safety, Meritocracy, Agility, Humility, Respect, Transparency. Collaborative environment where engineers and business experts work side‑by‑side on bold ideas.
- **Diversity & inclusion**: Female‑led company (CEO Siyu Huang); >70 % of employees from racial and ethnic minorities (as of July 2023). Explicit DEI statement and commitment to diverse perspectives.
- **Benefits**: Competitive wages; medical, dental, and vision insurance; HSA/HRA/DCRA programs; 401K with company match; flexible PTO; short‑ and long‑term disability; continuing education support; family leave.
- **Work environment**: On‑site at Billerica (MA) headquarters for manufacturing and R&D roles; also has sales/supply chain offices in Germany, Korea, and Japan. Likely on‑site for technical roles; hybrid may be possible for non‑lab positions.
- **Impact**: Work on battery technology that touches automotive, defense, robotics, and critical energy infrastructure – with a clear mission toward a greener future.

## Sources
1. [Factorial Energy – Company Website](https://factorialenergy.com/)
2. [Factorial Energy – Careers Page](https://factorialenergy.com/careers/)
3. [Factorial Energy – About Us](https://factorialenergy.com/about/)
4. [Factorial Energy – Investor Relations FAQs](https://ir.factorialenergy.com/ir-resources/investor-faqs)
5. [Factorial Energy – Nasdaq Listing Press Release](https://ir.factorialenergy.com/news-releases/news-release-details/factorial-lists-nasdaq-bringing-solid-state-batteries-validation)

## Other roles at Factorial Energy

- [General Affairs Specialist (2-Year Fixed-Term)](https://feeny.ai/job/general-affairs-specialist-2-year-fixed-term-factorial-energy-cheonan-south-qhh38wd4dq2e) — Cheonan South, South Korea
- [Inventory Manager - Battery Mass Production](https://feeny.ai/job/inventory-manager-battery-mass-production-factorial-energy-cheonan-south-xkeywtk4n4an) — Cheonan South, South Korea
- [Facility Specialist](https://feeny.ai/job/facility-specialist-factorial-energy-cheonan-south-cr4a7j5tesfk) — Cheonan South, South Korea
- [EHS Manager](https://feeny.ai/job/ehs-manager-factorial-energy-cheonan-south-6tcdasxwskrw) — Cheonan South, South Korea
- [Battery Production Technician - Electrolyte Mixing & Filling](https://feeny.ai/job/battery-production-technician-electrolyte-mixing-filling-factorial-energy-ps0zh25hwnq7) — Cheonan South, South Korea
- [Battery Production Manager - Mass Production](https://feeny.ai/job/battery-production-manager-mass-production-factorial-energy-cheonan-south-5jwmsd4pn6vq) — Cheonan South, South Korea
- [Formation Process Equipment Technician](https://feeny.ai/job/formation-process-equipment-technician-factorial-energy-cheonan-south-0gns19777a8r) — Cheonan South, South Korea
- [Senior / Staff MES System Engineer](https://feeny.ai/job/senior-staff-mes-system-engineer-factorial-energy-cheonan-south-fq5ng09g308k) — Cheonan South, South Korea
- [Senior / Staff Formation Equipment Engineer](https://feeny.ai/job/senior-staff-formation-equipment-engineer-factorial-energy-cheonan-south-8p1gxh6jezg8) — Cheonan South, South Korea
- [Senior / Staff Welding & Sealing Equipment Engineer](https://feeny.ai/job/senior-staff-welding-sealing-equipment-engineer-factorial-energy-cheonan-south-ecq3jsz6wn03) — Cheonan South, South Korea