Mainspring Energy
Senior Package R&D Technician
Skills
2 months ago
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Important information
Contract type:
Permanent
Salary:
$36 – $51 / year
Location:
Menlo Park, CA, USA
Work mode:
Onsite
Published on:
5 September 2026
What they need
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
Job Overview
The Package R&D Technician will be someone with a solid baseline of experience in fabrication and assembly. They will have had experience in an R&D environment where work instruction may not be fully defined and collaboration with engineers is required to achieve the goals of a prototype build. They will be flexible and team oriented, helping their colleagues where needed to build and learn our product as new designs come out.
Requirements
Build components and assemblies that make up our generator enclosures, install components and modify parts as needed for new prototype builds and to support production builds.
Collaborate with engineers to fix, repair, and redesign components and assemblies focusing on manufacturability and reliability in order to meet the testing and qualification schedule of new designs.
Work with a quick-learning build and test team to support ongoing testing and retrofits
Identify opportunities to improve safety and productivity in the build process
Qualifications
Minimum of 7 years of experience with mechanical assembly and/or repair, including experience with metal fabrication; cutting, grinding, and drilling required. Welding experience is preferred.
Demonstrated ability and certification to use a forklift
Ability to learn quickly, be self-motivated and safety oriented
Candidates must be able to stand for long periods of time, lift up to 50 lbs., and wear required PPE
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.
In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
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.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
This position is onsite
at our Menlo Park HQ
. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
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