Mechanical Engineer - Battery Sorting, Energy Storage

About Redwood Materials

Redwood is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recycling — keeping critical minerals in circulation and driving the energy transition. Founded in 2017, we're delivering low-cost and large-scale energy storage and producing battery materials in the U.S. for the first time, all from batteries we already have.

Mechanical Engineer - Battery Sorting, Energy Storage

Do you want to design and build the automated systems that make battery recycling possible at scale? Join the Battery Sorting team at Redwood Materials, where we are building a world-class, state-of-the-art, ML-enabled sorting platform that integrates conveyors, diverter mechanisms, computer vision, and operator-assist systems to classify and route thousands of end-of-life batteries per hour across diverse chemistries and form factors.

Our team partners closely with Controls, Software, and Production Engineering to solve tightly coupled electromechanical and AI-driven challenges as we scale the infrastructure driving the circular battery economy. By increasing the reach of recycled and sustainable materials, we are transforming the global battery supply chain.

As a Mechanical Engineer on the Sorting team, you'll work alongside a world-class, cross-functional group of engineers to design, fabricate, integrate, and sustain production sorting equipment. We're looking for hands-on problem solvers who are energized by rapid iteration, people who can move fluidly between CAD, the shop floor, and the production line to keep hardware performing.

If you're ready to make a tangible impact on the future of sustainable manufacturing, we want to hear from you.

Responsibilities:

• Design, prototype, and implement mechanical assemblies for sorting line subsystems including infeed, outfeed, conveyors, diverters, and guarding
• Collaborate with production engineering to troubleshoot and improve existing sorting equipment and processes to maximize throughput and uptime
• Apply engineering fundamentals (structural sizing, mechanism design, tolerance analysis) to deliver robust hardware solutions
• Create detailed models and engineering drawings in SolidWorks for custom fixtures, brackets, enclosures, and conveyor components
• Support machine activation alongside the controls engineering team; participate in development testing and validation runs with production engineering
• Assist with integration of sensors, cameras, and actuators into mechanical assemblies, ensuring hardware interfaces support the ML-based classification and computer vision pipeline
• Contribute novel mechanical concepts and designs with the potential to generate intellectual property and patents
  
  

Basic Qualifications:

• Bachelor's degree in Mechanical Engineering or a related engineering discipline
• Experience using a CAD software design package (e.g., SolidWorks, NX, CATIA, or ProE)
• Internship, co-op, or up to 2 years of professional experience in mechanical design (new graduates welcome)
  
  

Preferred Skills and Experience:

• Hands-on fabrication or prototyping experience (3D printing, sheet metal, welded structures, manual machining)
• Exposure to conveyor systems, material handling equipment, or automated sorting/packaging machinery
• Familiarity with sensor and actuator integration (encoders, servos, pneumatics, proximity sensors, cameras)
• Interest in or exposure to machine learning, computer vision, or AI-enabled manufacturing systems
• Understanding and application of GD&T
• Experience working in or adjacent to a production or manufacturing environment
• Comfort with engineering hand calculations and basic FEA
• Ability to prioritize and execute tasks in a fast-paced, dynamic environment
• Strong collaboration skills, including daily interactions with engineers, maintenance technicians, suppliers, and leadership
  
  

Additional Requirements

• Work schedule may vary depending on site operational needs, and flexibility is required
• Ability to work in challenging working conditions which may include exposure to noise, dust, chemicals, and temperature extremes, while protected by PPE, for extended periods of time
• Must be able to lift and carry up to 50 lbs. as needed
  
  

In accordance with California pay transparency laws, the salary range for this position is listed below. Actual compensation may vary based on a variety of factors, including experience, education, and skills.

California Pay Range:

$125,000—$197,500 USD

The position is full-time. Compensation will be commensurate with experience.

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