The Opportunity:Factorial Energy is seeking a Manager/Senior Manager, Solid-State Battery Product Development to join our team in our Billerica, MA location. This person will be responsible for leading lithium-ion cell new product development. The ideal candidate will own the full design-to-manufacturing lifecycle - from prototype design and validation through pilot-line scale-up and production ramp - and partner with R&D, process, manufacturing, and quality teams to translate technical breakthroughs into scalable, reliable products.
In this role, you will:- Lead lithium-ion cell design, validation, and transfer from prototype to mass production
- Define specifications, performance targets, and acceptance criteria
- Drive root-cause investigations, develop new characterization methods, and continuously improve cycle life, safety, and yield
- Collaborate with process engineers, suppliers, and external vendors to source, qualify, and scale high-quality materials, components, and tooling
- Support customer projects with technical reports, datasheets, and on-time delivery of milestones
- Participate in DFMEA/PFMEA reviews
- Partner across R&D, manufacturing, and quality to ensure smooth handoffs, alignment on KPIs, and on-time program delivery in a fast-paced team environment
- Stay current with industry advances in LIB and solid-state technology, evaluate new materials and processes, and bring forward improvements that strengthen product reliability and cost
We are looking for people who:- has 5-10 years of hands-on experience in lithium-ion battery (LIB) product development, and has led or substantially contributed to lithium-ion cell design, validation, and transfer from prototype to mass production
- holds a Bachelor's degree or higher in Materials Science, Chemical Engineering, Chemistry, or a related field, with an advanced degree (M.S. or Ph.D.) preferred
- brings a strong background in cell design, electrochemistry testing, materials characterisation, and failure analysis, ideally with pilot-line scale-up and DFMEA/PFMEA experience
- has solid-state battery experience (preferred but not required)
- is willing and able to thrive in a fast-paced, high-pressure environment with tight deadlines and shifting priorities
- is a strong team player - collaborative, communicative, and dependable
- can work fully on-site in Billerica, MA, with occasional cross-site collaboration with global teams
- is familiar with automotive quality frameworks (IATF 16949, APQP, PPAP)
Some of our competitive benefits include:- Medical, dental, and vision insurance
- Generous paid time off
- 401(k) plan that includes employer matching funds
- Education assistance plan
- Life insurance and disability coverage
Salary Range : $135K-$175K Annual base+ Equity Incentives
Work Location:805 Middlesex Turnpike, Billerica, MA 01821
Pay Range (MA)
$135,000-$175,000 USD
