Staff Mechanical Design Engineer, Big Machines
- Salary
- $147,500 - $235,000
- Level
- Staff
Not stated in the posting: work type, visa.
Open. First seen 2 October 2026.
About the role
Redwood Materials's standard text
About Redwood Materials
Redwood Materials was founded in 2017 by JB Straubel, co-founder and former CTO of Tesla, on a simple but radical idea: the critical minerals powering the energy transition already exist. They just need to come back. Today Redwood is the largest lithium-ion battery recycler in North America — recovering, refining, and redeploying critical minerals from end-of-life batteries back into the supply chain.
On the energy side, Redwood has deployed the largest second-life battery project in the world, delivering power to AI data centers in months rather than years using proprietary energy architecture engineered entirely in-house. The company is profitable, the market it operates in is projected to grow 20 to 50 times over the next decade, and Redwood is the only company with the supply chain, the technology, and the operational scale to lead it.
About the team
Big Machines designs and builds custom equipment for our factories and processing plants. Most of what we make can’t be bought from a vendor, so we figure out how to design, build, and commission it ourselves. The scale is big. A full kiln system may weigh 100+ tons and be over 30m long.
We are looking for an engineer who has owned machinery from concept through commissioning. You have built things that failed and learned the hard lessons. You work from first principles when there is no precedent to lean on, run your own analysis, and you hold a high standard for detail without losing the ability to execute.
Responsibilities
Own the design, build, and commissioning of low-volume, custom integrated machines
Perform engineering hand calculations and finite element analysis to size structures and mechanisms
Create detailed models and engineering prints in SolidWorks, including managing large assemblies and drawing packages
Collaborate with internal fabrication teams and external vendors to manufacture parts
Support machine assembly and testing by performing hands-on commissioning, equipment operation, and floor troubleshooting
Basic Qualifications
Bachelor's degree in mechanical engineering or a related discipline
5+ years of professional experience designing and analyzing mechanical structures, mechanisms, or industrial equipment
Advanced proficiency in 3D CAD software such as SolidWorks, NX, CATIA, or Creo
Strong understanding and application of Geometric Dimensioning and Tolerancing (GD&T)
Preferred Qualifications
Experience designing and fabricating welded structures
Experience designing and testing mechanical mechanisms
Experience managing large CAD assembly models and engineering drawings
Experience with Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD)
Experience integrating servos, actuators, and sensors
Hands-on experience working in a production facility with heavy equipment and industrial machinery
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:
$147,500—$235,000 USD
The position is full-time. Compensation will be commensurate with experience.
Redwood Materials's standard text
We collect personal information (PI) from you in connection with your application for employment with Redwood Materials, including the following categories of PI: identifiers, personal records, professional or employment information, and inferences drawn from your PI. We collect your PI for our purposes, including performing services and operations related to your potential employment. If you have additional privacy-related questions, please contact us at privacy@redwoodmaterials.com.
What this role asks for
62% of this description is written for the role. The rest is Redwood Materials's standard text, folded away below.
Read against Redwood Materials's other open postings on this site.
The team: Engineering & Technology HIRES STEADILY
This role is one of 51 open in Engineering & Technology. 13 were posted in the last 30 days and the oldest in October: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (19 of 51), Embedded Systems (14 of 51), PCB Design (8 of 51), Simulink (8 of 51), C (7 of 51), MATLAB (7 of 51), AWS (6 of 51)
OTHER ROLES ON THIS TEAM
- Staff Power Electronics Engineer, Energy Storage posted Oct 14
- Electrical Engineer, Energy Storage posted Oct 14
- Supplier Industrialization Engineer, Mechanical Components posted Oct 13
- Senior Battery Test and Validation Engineer posted Oct 13
- Senior Battery Data Engineer posted Oct 13
- Staff Applications Engineer posted Oct 8
- Supplier Industrialization Engineer (SIE) – Electronics & PCBA posted Oct 8
- Staff Electrical Engineer, Energy Storage BoP posted Oct 7
- Senior Power Systems Engineer, Energy Storage posted Oct 7
- Staff Power Systems Engineer, Hardware in Loop posted Oct 5
- Principal Engineer, Extractive Metallurgy posted Oct 5
- Senior DevOps Engineer posted Oct 3
- Senior Power Electronics Engineer, Energy Storage posted Sep 29
- Senior Manager - Service Engineer, Energy Storage posted Sep 16
- Global Supply Manager, Electronics & PCBA posted Sep 6
- Manufacturing Equipment Engineer posted Sep 4
- Staff Cathode Engineer posted Sep 4
- Senior Technical Program Manager, Production Engineering posted Aug 11
- Software Validation Engineer, Energy Storage posted Aug 7
- Battery Software Integration Engineer, Energy Storage posted Aug 7
- Staff Chemical Engineer posted Aug 5
- Senior Mechanical Engineer, Production posted Aug 1
- Cathode Design Engineer posted Jul 29
- Electronics Technician posted Jul 27
- Production Engineering Manager posted Jul 24
- Development Engineering Technician posted Jul 24
- Senior Systems Engineer, Energy Storage posted Jul 22
- Senior Data Engineering Manager posted Jul 17
- Senior Analytics Engineer posted Jul 16
- Embedded Software Engineer – Power Electronics, Energy Storage posted Jul 9
- IT Support Specialist posted Jun 30
- Software Engineer - ML/Computer Vision (Battery Sorting) posted Jun 23
- Software Engineer - Site Controller, Energy Storage posted Jun 23
- Functional Safety Engineer, Energy Storage posted Apr 21
- Abuse Test Engineer, Energy Storage posted Apr 9
- Mechanical Design Engineer, Energy Storage posted Mar 26
- Field Quality Engineer, Energy Storage posted Mar 25
- Reliability Engineer, Energy Storage posted Mar 25
- Service Engineer, Energy Storage posted Mar 10
- Senior Software Engineer, Energy Storage posted Mar 10
- Staff Software Engineer posted Feb 13
- Hardware Technical Program Manager, Energy Storage posted Jan 13
- Infrastructure Software Engineer, Energy Storage posted Dec 16
- Power Electronics Controls Engineer, Energy Storage posted Dec 16
- Senior Manufacturing Quality Engineer, Energy Storage posted Dec 16
- Power Electronics Engineer, Energy Storage posted Dec 16
- Sr. System Modeling Engineer, Energy Storage posted Dec 15
- Software Technical Program Manager, Energy Storage posted Dec 10
- Staff Controls Engineer posted Oct 30
- Staff Software Engineer, Factory Automation posted Oct 24
From the team and dates on Redwood Materials's own job board.
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