Staff Mechanical Engineer
ttmtech
Staff 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 a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.
This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.
Candidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.
Frequently Asked Questions
What is the salary for the Staff Mechanical Engineer role at mainspringenergy?
The listed salary for this Staff Mechanical Engineer position at mainspringenergy is USD 172K–203K. This is an Salary role.
Where is the Staff Mechanical Engineer position at mainspringenergy located?
This Staff 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 Staff Mechanical Engineer role at mainspringenergy full-time or part-time?
This is listed as a Salary position. It is posted as a Staff Mechanical Engineer role in the Mechanical and Structural Systems department at mainspringenergy.
Which team or department does the Staff Mechanical Engineer at mainspringenergy belong to?
This Staff 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 Staff 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 Staff Mechanical Engineer job at mainspringenergy posted?
This Staff Mechanical Engineer position at mainspringenergy was posted on Aug 5, 2026. Apply as soon as possible — early applications are often reviewed first.
Staff Mechanical Engineer
mainspringenergy · 💰 USD 172K–203K
You'll be redirected to mainspringenergy's official application page on Lever.