Mainspring Energy · 20 hours ago
Senior Mechanical Design Engineer - Electromechanical
Menlo Park, CA
Full-time
Onsite
Senior Level
$132K/yr - $156K/yr
5+ years expMainspring Energy is revolutionizing power generation with its innovative Linear Generator technology. The Senior Mechanical Design Engineer will focus on designing electrical enclosures and cables, leading projects to enhance system performance and reliability while mentoring junior engineers.
Clean EnergyEnergyOil and Gas
Responsibilities
Lead brainstorming and technical review sessions to develop innovative solutions that enhance the performance and cost-efficiency of the Linear Generator and electrical subsystems
Take full ownership of the design, optimization, and execution of key electrical hardware, balancing cost reduction, safety improvements, and system-level reliability
Collaborate with reliability and test teams to validate systems and components, ensuring fast iteration cycles and incorporating feedback to drive the next-generation deployment of the Linear Generator
Collaborate cross-functionally with electrical engineering, manufacturing engineering, NPI, and external suppliers to deploy new designs into production, ensuring all systems meet the necessary performance and manufacturability requirements
Lead the development cycle of electrical hardware, including requirements development, prototyping, testing, iteration, and tooling, ensuring project milestones are met and resources are allocated effectively
Mentor and support junior engineers, guiding them through technical challenges, offering advice on design strategies, and helping to develop their skills while working towards project goals
Qualification
Required
Degree: BS or MS in Mechanical Engineering or a similar engineering field from an accredited institution. Experience and degree will determine the level, with the following minimum requirements: Senior: BS + 6 years or MS + 5 years
Proven experience taking ownership of electrical enclosure and/or cable design, from initial design to launch and managing cross-functional teams
Strong expertise in sheet metal design for medium-volume production, electrical component specification, mechanical design for electrical systems, and design-for-manufacturability challenges
A solid understanding of electrical engineering principles and thermal modeling, and the ability to integrate them effectively into larger system designs
Extensive experience in SolidWorks and PDM (or a similar CAD version control system). Experience with CFD, FEA, and programs like SolidWorks Flow Simulation or Ansys is a plus
Demonstrated ability to manage complex technical decisions, influence the direction of designs, and coordinate with teams to achieve successful outcomes
Passion for creating innovative and cost-effective solutions to enable the large-scale deployment of zero-carbon energy technologies
Benefits
Pre-IPO stock options
Benefits
Company
Mainspring Energy
Mainspring Energy provides power generation technology using linear generators for clean energy.
201-500 employees
H1B Sponsorship
Mainspring Energy has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (40)
2024 (23)
2023 (13)
2022 (12)
2021 (6)
Funding
Current Stage
Late StageTotal Funding
$813MKey Investors
General CatalystUS Department of EnergyBloombergNEF
2025-04-14Series F· $258M
2024-10-22Grant· $87M
2023-04-17Grant
Leadership Team
Shannon Miller
CEO and Founder
Adam Simpson
CCO and Founder
Recent News
Crunchbase News
2025-12-17
Company data provided by crunchbase