Mainspring Energy
Senior/Staff Materials Process Engineer
Menlo Park, CA · Staff+
Stay score
odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~45% per draw at Level III). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
$7,557 more — $133,557 — moves this role to Level III and 3 lottery entries. That figure is inside the range the employer already advertised.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $133,557 would place this position at wage Level III. That figure is within the posted range, and I'd like to target it. This role classifies under "Materials Engineers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Materials Engineers (17-2131) · San Francisco-Oakland-Fremont, CA. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
Employer immigration record
from this employer's Department of Labor filings
Files H-1B transfers
Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.
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About the role
- 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.
- The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of, performance and processing of a wide range of materials - non ferrous, ferrous, coatings, graphite, polymers etc.
- Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement.
Requirements
- MS + 5 years or PhD + 3 years of industry experience
- Fundamental understanding of and performance of engineering materials, and basic knowledge of structure-property relationships
- Working knowledge and experience with FMEA (Failure Mode and Effects Analysis)
- Demonstrated experience with statistical data analysis and reporting (Matlab/Python, Google Sheets/Excel, Weibull++, etc.)
- BS in Materials Science/Engineering or Mechanical Engineering
Nice to have
- Prior experience with metal casting processes (e.g., die casting, investment casting, sand casting) and their impact on part and performance is strongly preferred
- Broader exposure to other materials and process areas - such as coatings, polymers, graphite, forging, or joining/welding - is a plus
- Experience with volume production of metal or cast components is highly preferred
Compensation
- 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.
This listing is sourced directly from Mainspring Energy's careers page and normalized into a canonical job model.