Mainspring Energy · 22 hours ago
Senior Mechanical Engineer - Exhaust System
Menlo Park, CA
Full-time
Onsite
Senior Level
$126K/yr - $148K/yr
5+ years expMainspring Energy is revolutionizing power generation with innovative technology. They are seeking a Senior Mechanical Engineer to design and perfect exhaust systems for their Linear Generator, tackling complex engineering challenges while contributing to a sustainable energy future.
Clean EnergyEnergyOil and Gas
Responsibilities
Design for a Better World: Play a vital role in the entire design lifecycle of our low-emission exhaust subsystems. You'll take ideas from concept and analysis (FEA/CFD) to 3D modeling (Solidworks), prototyping, and validation testing
Solve Tough Challenges: Tackle fascinating engineering problems unique to exhaust systems, from selecting materials that withstand extreme temperatures to designing for durability in high-vibration environments and integrating emissions control and acoustic-damping technologies
Collaborate and Innovate: Work closely with a brilliant cross-functional team of engineers to integrate your designs and bring our next-generation products to life, contributing to a culture of continuous improvement
Validate and Perfect: Plan and execute rigorous testing to ensure your designs are robust, reliable, and ready to perform in the real world, meeting demanding requirements for performance, safety, and durability
Grow Your Skills: Stay at the forefront of mechanical engineering for clean power generation, continuously learning and identifying new opportunities to make our technology more efficient and cost-effective
Qualification
Required
A background in designing systems that operate in high-temperature and high-vibration environments
Solid engineering fundamentals in thermo-fluid systems and structural mechanics
An understanding of how to design for durability, fatigue, and long-term reliability
Proficiency with a 3D CAD package (we use Solidworks) and creating engineering drawings (GD&T)
Knowledge of common manufacturing processes like sheet metal fabrication, welding, and casting
Hands-on experience with prototyping, assembling, and testing hardware
Familiarity with analysis tools (FEA, CFD) to guide your design decisions
A degree in Mechanical Engineering or a related field
A strong background in mechanical design, typically demonstrated by 5+ years of professional experience
Experience taking designs from the drawing board to reality, preferably with complex hardware projects in fields like power generation, industrial equipment, or automotive systems
A natural curiosity and a drive to build, test, and create innovative solutions
Preferred
Exposure to acoustic or emissions control hardware is a great plus!
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