Associate Mechanical Engineer
mainspringenergy· Mechanical and Structural Systems
About this role
About Mainspring
Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
The core values that ground our work, guide our decisions, and connect us together:
Pragmatic Optimism
Excellence without Ego
Proactive Collaboration
About the Role
Mainspring is seeking an Associate Mechanical Engineer to contribute to mechanical engineering projects for our Linear Generator platform. In this role, you will build practical engineering skills by supporting mechanical design, CAD, drawings, analysis, testing, documentation, troubleshooting, and release activities.
This role is intended for early-career engineers who are developing practical engineering judgment and learning how to apply mechanical engineering fundamentals to real hardware. A strong candidate should be curious, detail-oriented, hands-on, eager to learn, and able to execute well-defined tasks with guidance from more experienced engineers.
Candidates who have already demonstrated independent ownership of defined-scope mechanical engineering work through multiple design, analysis, test, release, or implementation cycles may be better aligned to a Mechanical Engineer role.
Frequently Asked Questions
What is the salary for the Associate Mechanical Engineer role at mainspringenergy?
The listed salary for this Associate Mechanical Engineer position at mainspringenergy is USD 100K–113K. This is an Salary role.
Where is the Associate Mechanical Engineer position at mainspringenergy located?
This Associate Mechanical Engineer role at mainspringenergy is based in Menlo Park, CA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Associate Mechanical Engineer role at mainspringenergy full-time or part-time?
This is listed as a Salary position. It is posted as a Associate Mechanical Engineer role in the Mechanical and Structural Systems department at mainspringenergy.
Which team or department does the Associate Mechanical Engineer at mainspringenergy belong to?
This Associate Mechanical Engineer position is part of the Mechanical and Structural Systems department at mainspringenergy. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Associate Mechanical Engineer position at mainspringenergy?
Click the "Apply Now" button on this page. You will be redirected to mainspringenergy's official application portal hosted on lever where you can submit your application directly.
When was the Associate Mechanical Engineer job at mainspringenergy posted?
This Associate Mechanical Engineer position at mainspringenergy was posted on Aug 6, 2026. Apply as soon as possible — early applications are often reviewed first.
Associate Mechanical Engineer
mainspringenergy · 💰 USD 100K–113K
You'll be redirected to mainspringenergy's official application page on Lever.