Full-Time

Cell Design Engineer

All Solid State Battery

Updated on 3/13/2025

Factorial Energy

Factorial Energy

51-200 employees

Develops solid-state batteries for electric vehicles

No salary listed

Senior

Billerica, MA, USA

Category
Electronics Design Engineering
Electrical Engineering
Required Skills
Python
Requirements
  • More than 5 years of industrial experience with all-solid-state cell design, including testing, data, and failure mechanism analysis.
  • Experience with pouch cell or prismatic cell is required.
  • Strong communication skills (verbal and written).
  • Proficiency with Microsoft Office Suite (Word, Excel, PowerPoint, Project).
  • Knowledge of programming (i.e. Python) is a plus.
  • Strong problem-solving skills and able to come up with creative solutions to challenges.
  • Willingness to execute multiple tasks in a fast-paced start-up environment.
Responsibilities
  • Spend at least 50% of your time inside Factorial's labs, working directly with our development teams.
  • Design the cell by the multiple performance aspects (cycle life, energy density, power density etc.).
  • Review and feedback on the designed cell parameters to fine-tune them up to the customer’s requirements.
  • Engage in cell failure root cause analysis if required.
  • Interface and work closely not only with the rest of cell design team but also with internal R&D team, process team and production team to solve/mitigate the problems from the cell level.
  • Engage in responding to the customer requests by coordinating with the project managers.
  • Maintain compliance with all company protocols related to confidentiality, assignment of inventions, and other policies or duties as identified and assigned.
Desired Qualifications
  • Statistical analysis and Machine learning related skills are preferred.

Factorial Energy develops and sells solid-state batteries, focusing on the automotive industry. Their main product, the Factorial Electrolyte System Technology (FEST®), offers a safer and more efficient alternative to traditional batteries, with higher energy density. This technology is designed for integration into electric vehicles (EVs) by major auto manufacturers and battery producers. Factorial Energy distinguishes itself from competitors through its strong partnerships with leading OEMs and battery manufacturers, as well as its recent expansion into a large-scale production facility. The company's goal is to enhance the performance and manufacturability of EV batteries, positioning itself for growth in the expanding electric vehicle market.

Company Size

51-200

Company Stage

Series D

Total Funding

$242.2M

Headquarters

Woburn, Massachusetts

Founded

2013

Simplify Jobs

Simplify's Take

What believers are saying

  • Partnership with LG Chem accelerates development of solid-state battery materials.
  • New Methuen facility enables large-scale production to meet growing demand.
  • $200 million funding from Mercedes boosts R&D and production capabilities.

What critics are saying

  • Competition from QuantumScape may impact Factorial's market share.
  • High production costs could strain financial resources.
  • Dependency on OEM partnerships may risk commercialization success.

What makes Factorial Energy unique

  • Factorial Energy's FEST™ technology offers higher energy density than traditional batteries.
  • The company focuses on solid-state batteries, a safer alternative for electric vehicles.
  • Factorial collaborates with major OEMs, enhancing its market presence and credibility.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Unlimited Paid Time Off

401(k) Company Match

401(k) Retirement Plan

Education Assistance Plan

Short-term Disability Insurance

Long-term Disability Insurance

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

3%

2 year growth

22%
Primera Clase Mexico
Feb 25th, 2025
Mercedes EQS with solid-state battery targets 621-mile range

Mercedes first announced its partnership with Factorial on solid-state battery technology in 2021.

Electrive
Oct 24th, 2024
Dodge Charger Daytona receives solid-state battery for demo purposes

The initiative builds on Stellantis' $75 million investment in Factorial in 2021.

InsideEVs
Sep 10th, 2024
Future Mercedes-Benz EVs May Get Solid-State Batteries With 80% More Range

Mercedes also led a $200 million funding round in 2022 and today Factorial announced a new solid-state battery named Solstice.

Autocar Professional
Sep 10th, 2024
Mercedes partners with Factorial to make solid-state batteries: Report

Mercedes Benz and Factorial are working on solid state battery which will drastically increase the EV range, and be production ready by the decade end, the firms said, as reported by Reuters.

Business Wire
Apr 23rd, 2024
Factorial And Lg Chem Sign Mou To Develop Solid-State Batteries

Factorial Inc. (Factorial), an industry leader in the development of solid-state battery technology for electric vehicle (EV) applications, and LG Chem, a global leader in battery materials, today announced the signing of a memorandum of understanding (MOU) to accelerate the development of solid-state battery materials. (Graphic: Business Wire)Factorial Inc. (Factorial), an industry leader in the development of solid-state battery technology for electric vehicle (EV) applications, and LG Chem, a global leader in battery materials, today announced the signing of a memorandum of understanding (MOU) to accelerate the development of solid-state battery materials. (Graphic: Business Wire)WOBURN, Mass.--(BUSINESS WIRE)--Factorial Inc. (Factorial), an industry leader in the development of solid-state battery technology for electric vehicle (EV) applications, and LG Chem, a global leader in battery materials, today announced the signing of a memorandum of understanding (MOU) to accelerate the development of solid-state battery materials.The agreement aims to strengthen cooperation in the field of next-generation battery materials and secure future competitive advantage by combining LG Chem's battery material capabilities and Factorial's next-generation battery material and process innovations