Job Description

Factorial Energy is transforming battery technology to enable safe, scalable, and high-performance cells for electric vehicles. Operating out of its world-class research and development facility Massachusetts. Factorial holds a portfolio of solid-state innovations, including its segment-leading FEST™ (Factorial Electrolyte System Technology)


Factorial Energy is seeking a Power Electronics Design Engineer to join our team in Billerica, MA.


  • Design of very high current (up to 1000 A) low voltage switching circuits to control current and voltage in battery test systems.
  • Work with embedded software engineers to understand system requirements and develop software to interface with hardware.
  • Work with scientists and engineers to understand requirements and objectives.


  • Bachelor’s degree or higher.
  • 3+ years of experience in power circuits, such as inverters, power supplies and power controllers.
  • Experience in designing, testing and troubleshooting with GaNFETs and SiCFETs.
  • Mixed-Signal/Analog circuit design for High Speed I/O Interfaces.
  • Ability to develop very high speed control systems ranging from kHz up to MHz range.
  • Experience in the design of very high current low voltage switching circuits.
  • Experience with schematic capture, simulation and PCB layout tools such as Altium and KiCAD.
  • Experience with serial communication protocols such as I2C, SPI and CANBUS.
  • Experience in the interfacing with micro-controllers and single-board computers.
  • Collaborated with embedded software developers for the design, testing and debugging of circuits.
  • Familiar with test and measurement equipment including digital oscilloscopes, logic analyzers.
  • Experience in populating printed circuit boards and wiring circuits.
  • Experience in circuit design with FPGAs and BGA devices.
  • Experience with batteries.
  • Strong analytical and problem-solving skills.
  • Must be detail-oriented and organized. Experience with version control software (e.g., Git,) and bug tracking systems.
  • This job requires the ability to work independently, as well as part of a team. Strong communication and teamwork skills are essential for success in this role.
  • The candidate must Have the ability to adapt to new technologies and methodologies and continuously improve their skills to keep up with the industry trends.

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