Mainspring Energy
Direct Lever career site

Senior Mechanical R&D Technician

Location
Menlo Park, CA
Listed
Today

Job Overview

We are seeking enthusiastic and resourceful individuals with a strong mechanical background to join our growing Research & Development team as a Mechanical R&D Technician.

If you have a knack for mechanics, enjoy tackling novel challenges, and possess a passion for improvisation and creative problem-solving, this could be the perfect opportunity for you. In this role, you will be instrumental in the development of our innovative generator technology, working closely with our talented engineering team at our dedicated R&D Center of Excellence in Menlo Park. You'll have the chance to experiment, build prototypes, and contribute directly to bringing affordable, dispatchable, and clean energy to the world.

We offer excellent working conditions, with at least 30% of your time spent in comfortable indoor environments. Ergonomics and safety are paramount in our facility, ensuring a supportive and healthy work environment.

Responsibilities

  • Dive headfirst into the exciting world of next-gen high-efficiency generator development, collaborating with a dynamic build and test team to push the boundaries of energy technology
  • Leverage your mechanical prowess and unique skills to construct cutting-edge components and assemblies for our generators, following procedures while also identifying opportunities for innovation
  • Join forces with our talented engineers to troubleshoot, repair, and even reimagine components and assemblies, directly influencing the evolution of our designs
  • Become a detective of mechanical systems, conducting thorough inspections of test units and meticulously documenting your findings to provide crucial insights for our engineering team
  • Partner with your fellow innovators to proactively identify and implement improvements that enhance both the safety and efficiency of our groundbreaking work

Qualifications

  • Minimum of 7 years of hands-on experience with mechanical assembly and/or repair
  • Experience with automotive or heavy equipment assembly is a plus
  • Proven ability to learn quickly, a strong sense of self-motivation, and a demonstrated commitment to safety
  • Experience with precision measuring instruments, capable of measurements down to.001", using tools such as micrometers, bore gauges, and gauge blocks
  • Metal fabrication skills are considered a plus
  • Must possess a valid California Driver's License; Commercial Driver's License (Class A CDL) is a plus

Additional information

Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement.

At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you.

Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.

Pay and benefits

This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise.

New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.

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
Read the original posting

From Mainspring Energy's careers page, first listed on Rolev.ai on November 12, 2026. Rolev.ai is not the employer.

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Common questions

Where is the Senior Mechanical R&D Technician job at Mainspring Energy located?

This Senior Mechanical R&D Technician position at Mainspring Energy is located in Menlo Park, CA. Always check Mainspring Energy's application page for specific state eligibility or relocation policies.

How do I apply for the Senior Mechanical R&D Technician position at Mainspring Energy?

This listing links directly to Mainspring Energy's Lever application page. You can apply directly on Mainspring Energy's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Lever application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.