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Jobs at Mainspring Energy
78 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
21–40 of 78 jobs
Senior Field Service Technician
6 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$40.00 – $55.00 an hourTrades & logisticsWe are searching for highly motivated, mechanically inclined individuals to join our growing Field Service team. In this position, you will play a direct role in completing planned and reactive service operations on our generators. In this position, you will play a key role in…
Field Service Technician
6 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteMid level$31.00 – $40.00 an hourTrades & logisticsWe are searching for highly motivated, mechanically inclined individuals to join our growing Field Service team. In this position, you will play a direct role in completing planned and reactive service operations on our generators. In this position, you will play a key role in…
Staff Mechanical Engineer, Sealing Systems
7 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$172K – $230K a yearEngineeringThe Rings team owns one of the hardest technical problems in the Linear Generator: a piston and ring system that seals without liquid lubricant. Getting this right is foundational to the product’s low emissions and maintenance business model. The design space is demanding, with…
Senior Reaction Controls Engineer
7 weeks agoMainspring Energy · Menlo Park, California, United States
HybridSenior$134K – $159K a yearEngineeringDo you love thermodynamics and dynamic system control? Have you thought about thermodynamic cycles as both continuous and discrete dynamic systems? As other industries convert their thermodynamic machines to electromagnetic machines and electrify their platforms, would you like…
Electrical Engineer, Electronics Design
7 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteMid level$125K – $213.2K a yearEngineeringAre you an innovative hardware leader who thrives on driving cutting-edge electronics from initial concept to production? Do you prefer the challenge of owning complex, low-voltage control systems and guiding cross-functional teams through technical hurdles over routine,…
Associate Operations Support Specialist II
8 weeks agoMainspring Energy · Remote
RemoteSenior$22.00 – $26.00 an hourCustomer success & supportWe are seeking a highly reliable and detail-oriented Operations Support Specialist to monitor system alerts, respond promptly to issues, and execute defined troubleshooting actions based on established flowcharts. This position requires strong problem-solving skills, comfort…
Field Service Engineer
8 weeks agoMainspring Energy · Menlo Park, California, United States
On-site$112K – $127K a yearEngineeringAs a Field Service Programs & Operations Engineer at Mainspring Energy, you will serve as a technical leader supporting the Operations & Maintenance organizations. You will bridge Field Service, Operations, Quality, and Engineering by translating field challenges into practical…
Electrical R&D Technician
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteEntry level$28.00 – $34.00 an hourTrades & logisticsThe Electrical R&D Technician will be someone with a solid baseline of experience in electrical fabrication, assembly, and troubleshooting. They will have had experience in an R&D environment beyond just circuit board work. They will be experienced in working on high voltage…
Field Service Manager
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteManager$128K – $150K a yearOperationsAs a Field Service Manager at Mainspring Energy, you will lead Field Service Supervisors and support the overall performance, availability, and reliability of Mainspring's operating fleet. You will translate fleet performance objectives into effective field execution by…
Director of Origination - Public Power
2 months agoMainspring Energy · Remote
RemoteDirector$167K – $191K a yearEngineeringMainspring is seeking a high-energy, commercially driven Director of Origination to lead our commercial strategy and transaction execution across Municipalities, Electric Cooperatives, and IOUs.
Senior Originator - Public Power
2 months agoMainspring Energy · Remote
RemoteSenior$145K – $170K a yearEngineeringMainspring is seeking a high-energy, commercially driven Public Power Senior Originator to drive our commercial strategy and transaction execution across Municipalities, Electric Cooperatives, and IOUs.
Cost Engineer
2 months agoMainspring Energy · Menlo Park, California, United States
HybridEntry level$86K – $115K a yearEngineeringWe are seeking a motivated and detail-oriented Cost Engineer to join our SC PM & Cost Engineering team. This position provides an excellent opportunity to gain hands-on experience in supply chain cost analysis and optimization strategies, should-cost modeling, and capacity…
Senior Staff Project Strategist
2 months agoMainspring Energy · Menlo Park, California, United States
HybridLead / staff$196K – $231K a yearOperationsAt Mainspring, Product Managers sit at the intersection of engineering, sales, marketing, installation, and maintenance. The Project Strategist sits one step further out, at the boundary between the product Mainspring repeats at every large site and the full site a customer is…
Senior Machinist / R&D Specialist
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$50.00 – $59.00 an hourTrades & logisticsMainspring Energy is searching for a motivated Sr. Machinist capable of supporting the needs of our engineering development lab at our Menlo Park facility. In this position you will work with a small team and manage the daily workload and respond to projects needing precision…
Electronics Returns & Repair Manager
2 months agoMainspring Energy · Menlo Park, California, United States
On-site$130K – $182K a yearThe Manager – Depot Operations & Field Return Repair is responsible for the end-to-end lifecycle management of all field-returned electronic control assemblies supporting the installed fleet of Linear Generators (LGENs).
Manager, Technical Writing Team
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteManager$117K – $137K a yearEngineeringAt Mainspring, technical documentation isn't just a support function—it’s the backbone of our operations. You won’t be tethered to a desk; you’ll be on the floor, working directly with our hardware and engineering teams. This role offers the unique opportunity to lead and…
Senior Software Engineer in Test
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$135K – $159K a yearEngineeringDo you enjoy diving into building new automation systems and formulating new testing approaches in areas like cloud computing, networking, IoT with real time operating systems, controls, simulations (MIL, SIL, PIL), and algorithms? We combine this technology with our company…
R&D Test Engineer
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteMid level$108.8K – $123.6K a yearEngineeringMainspring is seeking an open-minded, curious, and highly motivated R&D Test Engineer who likes to solve challenging cross-functional problems in both a research and production environment. In this role, you will design and execute tests on the Linear Generator, focusing on new…
Senior/Staff Materials Process Engineer
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$126K – $178K a yearEngineeringWe have a high-impact opportunity for a Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the…
Staff Electrical Engineer, Electronics Design
2 months agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$181K – $213K a yearEngineeringAre you an innovative hardware leader who thrives on driving cutting-edge electronics from initial concept to production? Do you prefer the challenge of owning complex, low-voltage control systems and guiding cross-functional teams through technical hurdles over routine,…
Updated 06 Nov 2026 09:37 UTC from the OptiTalent job library.