OptiTalent · Job Finder
Jobs in California, United States
68 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
41–60 of 68 jobs
Senior Mechanical Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$140K – $165K a yearEngineeringMainspring is seeking a Senior Mechanical Engineer to own significant mechanical engineering projects, subsystems, or technical workstreams for our Linear Generator platform. In this role, you will develop robust mechanical designs, drive projects through the full design cycle,…
Mechanical Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
On-site$119K – $140K a yearEngineeringMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work…
Director, Regulatory
3 months agoMainspring Energy · Menlo Park, California, United States
RemoteDirector$233K – $275K a yearLegal & complianceMainspring Energy is seeking an experienced legal or regulatory professional to lead the Company's strategy on environmental, energy, and regulatory matters. Reporting to the General Counsel, this individual will drive regulatory strategy, policy engagement, and compliance…
Staff Software Controls Engineer - Site Control
3 months agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$161.5K – $190K a yearEngineeringMainspring Energy is seeking a highly skilled Staff Controls Software Engineer to develop and test the critical software that integrates our Linear Generators into global energy infrastructure. As an individual contributor (IC) within a high-performing Scrum team, you will…
Mainspring Energy · Menlo Park, California, United States
HybridLead / staff$135K – $160K a yearEngineeringWe have a high impact opportunity for a Modeling and Simulation Engineer to support the design, test, and manufacture of reliable and efficient linear generators at Mainspring Energy. On the system modeling and simulation team, you will have a central role in refining the way…
Staff CFD Modeling Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
HybridLead / staff$160K – $190K a yearEngineeringDo you have a favorite upwinding technique for hyperbolic PDEs? We have a high impact opportunity for a CFD Modeling Engineer to support the design, test, and manufacture of reliable and efficient linear generators at Mainspring Energy. On the system modeling and simulation…
Staff Mechanical Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$172K – $203K a yearEngineeringMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work…
Staff Reliability Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$151K – $178.2K a yearEngineeringMainspring Energy is growing rapidly and has begun to manufacture its Linear Generators in volume, and reliability is a crucial element to the success of the product. The reliability team is responsible for evaluating design risks, and implementing tests and analyses to…
Staff Software Test and Automation Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
HybridLead / staff$140K – $165K 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…
Mainspring Energy · Menlo Park, California, United States
On-siteLead / staff$151.4K – $178K a yearEngineeringMainspring is revolutionizing energy generation. As the Staff Technical Program Manager for Software Engineering, you are the operational catalyst for our most critical software initiatives. Operating as the 'Chief of Staff' for execution, you translate high-level strategy into…
Senior Failure Analysis Engineer
3 months agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$117K – $138K a yearEngineeringOur Linear Generator is a sophisticated system integrating a wide range of engineering disciplines, including thermodynamics, mechanical, electrical, software, and controls. To support our rapid transition into volume manufacturing we are actively expanding the scope and size…
Staff Reliability Engineer, Electrical Systems
4 months agoMainspring Energy · Menlo Park, California, United States
On-siteLead / staff$151K – $178.2K a yearEngineeringMainspring Energy is growing rapidly and has begun to manufacture its Linear Generators in volume, and reliability is a crucial element to the success of the product. The reliability team is responsible for evaluating design risks, and implementing tests and analyses to…
Mainspring Energy · Menlo Park, California, United States
On-siteLead / staff$172K – $203K a yearEngineeringMainspring is seeking a Staff Mechanical Design Engineer to own the design of electrical enclosures and power electronics packaging for the Linear Generator. You’ll lead projects from requirements through design, review, testing, and release, working closely with EE,…
Fleet Operations & Analytics Engineer
4 months agoMainspring Energy · Menlo Park, California, United States
On-site$109K – $123K a yearData & AIThe Linear Generator is a sophisticated, automated, and integrated system spanning a wide range of engineering disciplines including thermodynamics, mechanical, electrical, software, and controls. As a member of our Fleet Operations & Analytics Team, you will be part of a…
Director, Electrical Strategic Sourcing
5 months agoMainspring Energy · Menlo Park, California, United States
RemoteDirector$188.2K – $221.5K a yearOperationsWe are seeking a Director, Electrical Strategic Design Sourcing to build and lead the electrical commodity supply chain function. Reporting to the VP of Supply Chain, this role directs a team of commodity managers and program resources, owns the departmental budget, and…
Senior Mechanical Engineer - Electromechanical
5 months agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$140.3K – $165K a yearEngineeringMainspring is seeking Senior Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional…
Senior Reliability Engineer, Electrical Systems
5 months agoMainspring Energy · Menlo Park, California, United States
On-siteSenior$126K – $148.3K a yearEngineeringMainspring Energy is growing rapidly and has begun to manufacture its Linear Generators in volume, and reliability is a crucial element to the success of the product. The reliability team is responsible for evaluating design risks, and implementing tests and analyses to…
Mainspring Energy · Menlo Park, California, United States
On-siteMid level$125K – $147K a yearEngineeringThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest…
Staff Electrical Engineer - Power Electronics
7 months agoMainspring Energy · Menlo Park, California, United States
HybridLead / staff$181K – $213K a yearEngineeringThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest…
Senior Electrical Engineer - Power Electronics
7 months agoMainspring Energy · Menlo Park, California, United States
HybridSenior$147K – $173K a yearEngineeringThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.