Sales Engineer

2 days ago

Boston, Lincolnshire, United Kingdom Factorial Energy Full time

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) 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

Factorial Energy is seeking a Sales Engineer to join our commercial team in Billerica. This role bridges the gap between technology and business—helping customers understand the value of Factorial's solid-state technology and driving new opportunities across mobility and energy market segments.

You will combine technical depth with customer-facing skill, acting as a trusted advisor to both engineers and procurement teams at OEMs, tier suppliers, and strategic partners.

In this role, you will:

  • Act as the primary technical liaison for customer accounts, supporting both pre-sales and post-sales interactions.
  • Develop and maintain comprehensive account plans that define customer goals and track progress.
  • Build and maintain customer relationships through proactive communication, onsite visits, and hosting structured customer and partner meetings with cross-functional teams.
  • Support proposals, including RFIs and RFQs, and technical presentations to clearly communicate Factorial Energy's value proposition and technology.
  • Coordinate with Engineering, Product, Program, Quality, Operations, and Supply Chain teams to document customer specifications, ensure alignment, and meet customer expectations.
  • Capture and relay customer feedback and actionable insights to guide product development and commercialization.
  • Prepare concise technical documentation that highlights Factorial's technology and meets customer needs.

We are looking for people who:

  • Hold a bachelor's or higher in mechanical, electrical, chemical, materials, or related engineering.
  • Bring 3+ years of technical sales, field applications, or program management experience, ideally in batteries, EV, or hardware with direct customer interaction.
  • Have strong technical communication skills and experience leading customer presentations, RFI/RFQ responses, and account planning.
  • High proficiency in preparing technical slides and customer-facing presentations
  • Are comfortable working cross-functionally and independently, with excellent organizational and relationship-building skills.
  • Are fluent in English; additional language skills (KR, CN, GER) are a plus.
  • Are willing to travel and occasionally host customers at company sites.

Location: 805 Middlesex Turnpike, Billerica, MA 01821

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

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