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Mechanical Engineer

Factorial Energy
Billerica, Massachusetts
Full Time
Posted January 21, 2026
$90k - $110k
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Application opens on company website

Job Description

A Mechanical Engineer at Factorial Energy will be responsible for designing and improving mechanical components and systems related to solid-state batteries, supporting manufacturing processes, and ensuring quality and safety standards in a fast-paced energy storage environment.

Key Responsibilities

  • Design and execute mechanical design experiments to meet KPI targets
  • Design and validate clamping fixtures and support SOP alignment with customers
  • Perform quality checks and problem-solving related to mechanical designs
  • Support clamping process operations and testing for thickness uniformity and pressure distribution
  • Improve cell component mechanical design and update drawings
  • Design shipping packages and conduct risk assessments

Requirements

  • Bachelor's degree (BS) or Master's degree (MS) in Mechanical Engineering or Electro-Mechanical Engineering
  • 1 to 3 years of experience in a mechanical design role to issue drawings in a product development environment
  • Skills and experience with a 3D modeling software such as Solidworks, CATIA, Creo, etc.
  • Skills and experience utilizing machining equipment such as a vertical endmill, band saw, lathe, welding, 3D printer, etc.
  • Good written and verbal communication skills in English
  • Experience working with lithium-based battery technology for 1 to 3 years

Benefits & Perks

Salary range: 90,000-110,000 USD
Work schedule: Not specified
Work environment perks: Medical, dental, and vision insurance; Generous paid time off; 401(k) plan with employer matching; Education assistance plan; Life insurance and disability coverage

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