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Jobs in United States
68 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–20 of 68 jobs
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Senior Executive Assistant
11 days agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$128K – $150K a yearAdministrationWe are seeking a highly proactive, detail-oriented, and adaptable Senior Executive Assistant to provide high-level administrative, operational, and strategic support to members of our Executive Leadership Team. Reporting directly to the SVP, People Operations, this role will…
Mainspring Energy · Menlo Park, California, United States
HybridMid level$119K – $140K a yearEngineeringDo you enjoy controlling multi-domain physical systems like robots, cars, or generators using embedded systems? Are you passionate about modeling system dynamics (linear or nonlinear), designing control algorithms, implementing them in hardware, and verifying real-world…
Senior Sustaining Controls Engineer
11 days agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$138.9K – $163.4K a yearEngineeringThe Senior Sustaining Controls Engineer will play a crucial role in the success of our product automatically and reliably fulfilling customers’ electricity demand. You will work closely with cross-functional teams to diagnose and resolve issues, differentiate between…
Senior Staff Controls Software Engineer
12 days agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$189.4K – $222.8K a yearEngineeringMainspring Energy is seeking a highly skilled Sr. Staff Controls Software Engineer to architect, develop, and deploy industrial-grade Human-Machine Interfaces (HMI) and SCADA systems for our Linear Generator sites. As a senior individual contributor and technical lead, you will…
Software Deployment Operations Manager
3 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteManager$115K – $135K a yearEngineeringMainspring Energy is growing rapidly and has begun to deploy its Linear Generators in volume. Deploying and tracking software updates across our fleet will play a crucial role in the reliability of our product and the success of our customers.
Vice President, Electrical Engineering
3 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteExecutive$285K – $335K a yearEngineeringLead all electrical hardware development for complex power electronics and controls boards, both inside the Linear Generator and also all of the grid integration equipment; Manage the development systems and processes, product deliverables and roadmap, strategy and goals;…
Senior Product Integration Engineer (CAD)
3 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$130K – $153K a yearEngineeringMainspring is seeking a Senior Product Integration Engineer (CAD) to own and maintain the integrated CAD definition of the Linear Generator as designs evolve. Design Engineers will continue to own the technical design and subsystem CAD; this role will make sure those designs…
Senior Product Performance Engineer
3 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$129.9K – $152.8K a yearEngineeringMainspring is seeking a rigorous, curious, and highly motivated Product Performance Engineer to own the performance of our Linear Generator. Reporting directly to the VP of Test Engineering, you will combine hands-on experimental work with in-depth data analysis to…
Staff Product Performance Engineer
3 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$156K – $183.5K a yearEngineeringMainspring is seeking a rigorous, curious, and highly motivated Product Performance Engineer to own the performance of our Linear Generator. Reporting directly to the VP of Test Engineering, you will combine hands-on experimental work with in-depth data analysis to…
Mainspring Energy · Menlo Park, California, United States
On-siteLead / staff$160K – $190K a yearEngineeringMainspring Energy has fundamentally redefined onsite power generation. Our breakthrough product—the Mainspring Linear Generator (LGen)—is a completely new category of energy technology. Distinct from an engine, turbine, or fuel cell, the LGen directly converts straight-line…
Manager, CAD & Design Systems
4 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteManager$180K – $210K a yearDesignMainspring is seeking a Manager, CAD & Design Systems to build and scale the Mechanical Engineering organization responsible for CAD operations, product definition, product integration, design release, and configuration management. This leader will set the strategy for how…
FP&A Manager — Services
5 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$132K – $145K a yearFinanceWe are seeking an experienced FP&A professional to support our Services business unit, which services and maintains our hardware/equipment fleet in the field (Operations & Maintenance - O&M) . This role will partner closely with Operations, Field Service, and Supply Chain…
Sustaining Controls Engineer
5 weeks agoMainspring Energy · Menlo Park, California, United States
On-siteMid level$119K – $140K a yearEngineeringThe Sustaining Controls Engineer will play a crucial role in the success of our product automatically and reliably fulfilling customers’ electricity demand. You will work closely with cross-functional teams to diagnose and resolve issues, differentiate between mechanical,…
Electrical Upgrades Technician
5 weeks agoMainspring Energy · Menlo Park, California, United States
On-site$29.00 – $38.00 an hourTrades & logisticsWe are searching for a well-organized, reliable electrical technician to join our growing team. They will be responsible for diagnosing and repairing electronics, reading work instructions, installing new equipment, and implementing electrical upgrades. You will run software,…
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,…
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…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.