Mainspring Energy
94 open jobsGeneral information
Mainspring Energy develops distributed power generation technology for firm, flexible, and low-emissions electricity production. Its main product is the Linear Generator, a modular, dispatchable power system that reaches 46% efficiency and produces less than 1.5 ppm of NOx emissions. The company has more than 1 GW of the technology in late-stage development and operation.
Mainspring Energy is headquartered in Menlo Park, California. It has validated more than 1.5 million core run hours on its technology.
Currently, there are no job openings at Mainspring Energy. Over the last 30 days, 0 jobs were added and 0 were removed. Mainspring Energy is an H-1B sponsor.1
Week by week at Mainspring Energy
New listings added per week
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Tracking since September 27, 2026 · day 33 of 60
Velocity stats appear after 60 days of clean history. We're on day 33.
A weekly-adds chart drawn from that window would mostly show the day we started looking, not how Mainspring Energy hires. Every window control above is disabled, and each one says when it opens.
Roles added per week
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Busiest week in this window
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Tracked by InterviewOS since
September 2026
Days of clean history
33 / 60
velocity stats unlock at 60 days
Open roles right now
90
Open jobs
94 open · updated todayPage 2 of 5, most recently added first · Download (CSV)2
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Score your CV for free before you applyVisa sponsorship
Does Mainspring Energy sponsor visas? Using USCIS data, we've collected the number of H-1Bs granted from 2021 to 2023 as well as the number of petitions they've requested so far this year. Mainspring Energy is a likely employer for applicants who require sponsorship. Currently, they have 16 jobs certified for sponsorship in 2026, at a median pay of $122,963.3
Visa petitions approved each year (USCIS)3
| Fiscal year | Approved |
|---|---|
| FY2021 | 10 |
| FY2022 | 9 |
| FY2023 | 2 |
Based on public USCIS and Department of Labor records. Past filings do not guarantee future sponsorship. Browse all H1B sponsors →
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Common questions
Is Mainspring Energy hiring now?
Yes. There are 90 open jobs.
Does Mainspring Energy sponsor H-1B visas?
Yes. Government records show 16 jobs certified for FY2026, at a median pay of $122,963.
Interview OS
Company pages built from direct checks of real hiring systems.
Notes & sources
- 1. Company description. Written by InterviewOS from Mainspring Energy's public materials and press coverage; facts are checked against the sources below.
- 2. Live counts. Deduplicated live listings observed daily on Mainspring Energy's own hiring system; last check October 30, 2026. Stale and syndicated posts on aggregator sites are not counted.
- 3. Federal visa records. USCIS H1B Employer Data Hub and US Department of Labor LCA disclosure files, matched to this company by name.
Sources
mainspringenergy.com
USCIS H-1B Employer Data Hub
US Department of Labor LCA disclosure files
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