Full-Time
Cell Design Engineer
All Solid State Battery
Posted on 6/20/2024
Factorial Energy
51-200 employees
Develops solid-state battery systems for EVs
No salary listed
Billerica, MA, USA
In Person
On-site at 805 Middlesex Turnpike, Billerica, MA 01821; Greater Boston area. No remote option indicated.
 Electrical Engineering (1) |
|---|
- 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
- Statistical analysis and Machine learning related skills are preferred.
- 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.
- 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.
- Experience with solid-state battery cell design in an industrial setting
- Knowledge of battery safety and qualification testing
- Experience with data analysis and visualization tools (e.g., Python, MATLAB)
- Familiarity with CAD software and 3D printing for prototyping
Factorial Energy develops FEST solid-state battery systems for the automotive market. Its solid electrolyte platform replaces liquid electrolytes to improve safety, energy density, and efficiency, and is designed for integration by OEMs and battery manufacturers for EVs. The company differentiates itself through end-to-end supply-chain collaboration and its own large-scale production capability, including a new 67,000 sq ft factory, with testing in high-spec EVs before broader rollout. Its goal is to deliver safe, high-energy-density batteries at scale to accelerate electric vehicle adoption.
Company Size
51-200
Company Stage
Series D
Total Funding
$249M
Headquarters
Woburn, Massachusetts
Founded
2013
Simplify's Take
What believers are saying
- Stellantis validated 77Ah FEST cells, advancing automotive qualification in 2026.
- Karma Kaveya super-coupe integrates FEST for 2027 U.S. production launch.
- Investments from POSCO Future M and Phil Energy fund drone and robotics expansion.
What critics are saying
- QuantumScape's 1,000-cycle cells redirect Stellantis and Hyundai resources now.
- Solid Power's 50Ah cells to BMW capture high-spec contracts in 12 months.
- Cheonan factory's 10% yield halts scaling and jeopardizes IPO immediately.
What makes Factorial Energy unique
- FEST quasi-solid-state cells achieve 375 Wh/kg over 600 cycles with 4C discharge.
- FEST operates from -30°C to 45°C, unlike traditional solid-state batteries.
- Gammatron AI platform accelerates battery optimization from lab to production.
Help us improve and share your feedback! Did you find this helpful?
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
6 month growth
↑ 0%1 year growth
↑ 0%2 year growth
↑ 0%South Korean battery equipment manufacturer Phil Energy has made a strategic investment in US solid-state battery company Factorial Inc., the company announced on 26 January. The investment, completed last month, secures Phil Energy exclusive rights to supply assembly equipment for Factorial's solid-state batteries. Founded in 2013, Factorial has attracted backing from Mercedes-Benz, Stellantis, Hyundai Motor and materials firms including Lotte Energy Materials and Posco Future M. Its Solstice platform claims 80% higher energy density than conventional lithium-ion batteries and stable operation at temperatures up to 90°C. Phil Energy aims to expand into next-generation mobility, defence and robotics markets through the partnership. Morgan Stanley projects the global humanoid market will reach $5 trillion by 2050, whilst Statista forecasts the physical AI market will grow at 23.3% annually to $64.3 billion by 2030.
SK Posco's battery materials division has made a strategic investment in Factorial, a Massachusetts-based solid-state battery company, according to Yonhap News Agency. The deal provides Posco Future M with access to the advanced battery market whilst securing material supplies for Factorial's US research and development operations. Factorial, which operates a trial manufacturing facility in Cheonan and is preparing for a US share listing, develops all-solid-state batteries that use solid electrolytes to reduce fire risks and extend vehicle range. The technology is considered crucial for autonomous transport and robotics applications. Analysts forecast the physical artificial intelligence sector will grow 23% annually, reaching $64.3 billion by 2030. Posco Future M is expanding beyond nickel-based production to include lithium iron phosphate and solid-state alternatives.
Karma and Factorial will launch first U.S. Solid-State battery program for passenger EVs. Karma Automotive partners with Factorial Energy to integrate semi-solid-state batteries into U.S.-built EVs. * Factorial's Semi-Solid-State Batteries to Power Karma's 1,000-HP Electric Super Coupe * FEST battery tech enables lighter weight, extended range, and easier manufacturing integration. * Karma's 2027 Kaveya super coupe will debut the advanced battery platform in a production EV. Karma Automotive and Factorial Energy have announced the first U.S.-based commercial solid-state battery program for passenger vehicles. The partnership will introduce Factorial's FEST battery technology into Karma's upcoming all-electric Kaveya super coupe, launching in 2027. The initiative integrates Factorial's semi-solid-state battery platform with Karma's U.S.-designed and manufactured vehicle architecture. The collaboration will validate solid-state technology in a production-ready vehicle environment. Factorial's FEST (Factorial Electrolyte System Technology) is designed to deliver improved range and performance by using a high-energy electrolyte system. Semi-solid-state chemistry also offers manufacturing advantages, allowing up to 80% of existing lithium-ion battery production equipment to be used, thereby enabling faster commercial deployment. The Kaveya super coupe will be the first Karma model to adopt FEST batteries. Target specifications include more than 1,000 horsepower, top speeds above 320 km/h, and an estimated range exceeding 400 km. The vehicle features a "dog bone" battery layout, with cells arranged in front and rear compartments connected through a central tunnel to improve weight distribution and maintain low seat positioning. Karma, headquartered in Irvine, California, has not yet released a fully electric vehicle. The Kaveya represents its transition from extended-range electric vehicles (EREVs), such as the Revero, to fully EVs. The company produced 146 Reveros in 2023 and has delivered fewer than 1,000 units since its inception. Its 2026 model pipeline includes the Gyesera and Amaris, both EREV platforms with anticipated market entry later this year. All Karma vehicles are developed and built in the United States, with manufacturing at the Karma Innovation and Customization Center in Moreno Valley, California. Factorial, based in Massachusetts, also collaborates with global OEMs including Mercedes-Benz, Stellantis, Hyundai, and Kia. Mercedes-Benz recently tested an EQS prototype powered by FEST cells, while Stellantis is expected to integrate the technology in an upcoming Dodge Charger Daytona EV prototype. Factorial claims that a 90-kWh FEST battery pack could offer between 800 and 1,000 kilometres of range while weighing approximately 263 kilograms.
Karma Automotive and Factorial have announced the first solid-state battery production programme in the United States for passenger vehicles. Factorial's FEST solid-state battery technology will be integrated into Karma's next-generation platform, starting with the all-electric Karma Kaveya super-coupé, scheduled for late 2027. The Kaveya will deliver over 1,000 horsepower and exceed 200mph. Karma had delayed the vehicle's 2025 launch until finding suitable battery technology. Factorial's FEST technology enables higher performance and extended driving range whilst working with up to 80% of existing lithium-ion manufacturing equipment. The collaboration pairs Karma's US-based engineering and production with Factorial's domestically developed battery platform, strengthening American manufacturing capabilities for next-generation electric mobility. Factorial's commercial partnerships include Mercedes-Benz, Stellantis, Hyundai and Kia.
POSCO Future M backs US solid-state startup. POSCO Future M announced a strategic investment in US-based solid-state battery developer Factorial to gain an early presence in the next-generation battery market. The company extended a partnership originally established in November to jointly develop all-solid-state battery technology. Solid-state batteries replace liquid electrolytes with solid materials, offering potential improvements in safety, energy density, and charging speed. POSCO Future M has tested its cathode materials with Factorial, receiving positive evaluations. The company aims to apply solid-state battery materials to electric vehicles, robotics, and AI applications. The partnership aims to strengthen POSCO Future M's competitiveness as solid-state batteries move toward commercialization. Food for thought. The commercialization timeline and manufacturing scale remain unclear. * Progress has been suggested by POSCO Future M's strategic investment and the companies' November memorandum of understanding to jointly develop all-solid-state battery technology, yet details on near-term effects have not been made public 1, 2. * Clear start-of-production dates for mass-market vehicles have not been set; Reuters reported that Mercedes-Benz and Factorial aim to have the Solstice solid-state battery ready for production by the end of the decade 3. * Production capacity for Factorial's pilot solid-state battery manufacturing facility in Cheonan, South Chungcheong Province (South Korea) has not been disclosed, so current readiness for supplying several global automakers cannot be judged 4. Component and equipment suppliers can target the solid-state supply chain. * Specialty chemical and equipment makers can sell into POSCO Future M's solid-state push, since it is developing materials for all-solid-state batteries, including cathode materials, high-capacity silicon and lithium metal anodes (negative electrodes), and sulfide-based solid electrolytes (solid materials that replace the liquid electrolyte in conventional lithium-ion batteries) 4. * That work can drive orders for precursors such as lithium sulfide, plus tools built for steps processes such as dry coating for cathode materials, which Factorial has described for its solid-state battery development work 5, 6. * Vendors can work with POSCO Future M and Factorial at the Cheonan, South Chungcheong Province (South Korea) pilot line, plus Factorial's development and production operations in Massachusetts, to get products considered during validation and scale-up phases 1, 4. How would you feel if you could no longer use Tech in Asia?