Engineering Jobs at Mainspring Energy with Visa Sponsorship
Mainspring Energy hires engineers across hardware, manufacturing, and systems disciplines to build and scale its linear generator technology. The company has a consistent track record of sponsoring work visas for Engineering roles, supporting candidates from application through multi-year status.
See All Engineering at Mainspring Energy JobsOverview
Showing 5 of 44+ Engineering Jobs at Mainspring Energy jobs
Have you applied for this role?
Have you applied for this role?
Have you applied for this role?
Have you applied for this role?
Have you applied for this role?
See all 44+ Engineering Jobs at Mainspring Energy
Sign up for free to unlock all listings, filter by visa type, and get alerts for new Engineering Jobs at Mainspring Energy.
Get Access To All JobsCompany Overview
Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable local power generation technology, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless reaction with near-zero NOx emissions. Backed by top-tier investors including Khosla Ventures, Bill Gates, American Electric Power, Lightrock, and General Catalyst, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers. We are looking to build relationships with people who share our values: Pragmatic Optimism. Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth. Excellence without Ego. We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors. Proactive Collaboration. The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.
Job Overview
Mainspring is seeking a Manager with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will work with cross-functional teams to ensure that key electrical and mechanical subsystems meet challenging technical requirements from concept through manufacturing launch. You will directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal.
Core responsibilities
- Lead ideation and design reviews to develop innovative solutions that enhance performance and reduce cost of the Linear Generator and its electrical subsystems
- Own the structure, layout, optimization, prototyping, testing, and deployment of electrical enclosures and harnesses
- Partner with Electrical, Reliability, Test, NPI, Manufacturing, and supplier teams to define design direction, validate solutions, and meet project milestones
- Oversee execution by setting requirements and coordinating across disciplines to maintain cohesive technical direction
- Manage and mentor engineers, guiding technical decisions, setting priorities, and supporting professional growth
- Proactively balance timelines, resources, and risks to ensure consistent delivery on key engineering initiatives
Qualifications
- Degree: BS or MS in Mechanical, Electrical, or related engineering field with 11 years of industry experience
- Proven ownership of electrical enclosure and cable designs, with experience influencing cross-functional teams
- Deep expertise in sheet metal, mechanical-electrical integration, and design for manufacturability
- Strong foundation in electrical principles, thermal modeling, and system-level design
- Proficient in SolidWorks and PDM; experience with CFD/FEA tools (e.g., Ansys) is a plus
- Demonstrated ability to make technical trade-offs, guide design direction, and deliver complex systems
- Passion for mentoring engineers and advancing high-impact, low-carbon energy technologies
Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
Company Overview
Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable local power generation technology, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless reaction with near-zero NOx emissions. Backed by top-tier investors including Khosla Ventures, Bill Gates, American Electric Power, Lightrock, and General Catalyst, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers. We are looking to build relationships with people who share our values: Pragmatic Optimism. Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth. Excellence without Ego. We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors. Proactive Collaboration. The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.
Job Overview
Mainspring is seeking a Manager with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will work with cross-functional teams to ensure that key electrical and mechanical subsystems meet challenging technical requirements from concept through manufacturing launch. You will directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal.
Core responsibilities
- Lead ideation and design reviews to develop innovative solutions that enhance performance and reduce cost of the Linear Generator and its electrical subsystems
- Own the structure, layout, optimization, prototyping, testing, and deployment of electrical enclosures and harnesses
- Partner with Electrical, Reliability, Test, NPI, Manufacturing, and supplier teams to define design direction, validate solutions, and meet project milestones
- Oversee execution by setting requirements and coordinating across disciplines to maintain cohesive technical direction
- Manage and mentor engineers, guiding technical decisions, setting priorities, and supporting professional growth
- Proactively balance timelines, resources, and risks to ensure consistent delivery on key engineering initiatives
Qualifications
- Degree: BS or MS in Mechanical, Electrical, or related engineering field with 11 years of industry experience
- Proven ownership of electrical enclosure and cable designs, with experience influencing cross-functional teams
- Deep expertise in sheet metal, mechanical-electrical integration, and design for manufacturability
- Strong foundation in electrical principles, thermal modeling, and system-level design
- Proficient in SolidWorks and PDM; experience with CFD/FEA tools (e.g., Ansys) is a plus
- Demonstrated ability to make technical trade-offs, guide design direction, and deliver complex systems
- Passion for mentoring engineers and advancing high-impact, low-carbon energy technologies
Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
See all 44+ Engineering at Mainspring Energy jobs
Sign up for free to unlock all listings, filter by visa type, and get alerts for new Engineering at Mainspring Energy roles.
Get Access To All JobsTips for Finding Engineering Jobs at Mainspring Energy Jobs
Document hardware experience with manufacturing specifics
Mainspring's Engineering roles span mechanical, electrical, and manufacturing systems. Frame your resume around hands-on hardware development, production scaling, or systems integration rather than software-adjacent work, since that alignment directly supports the specialty occupation case for your visa petition.
Target roles tied to production scale-up
Mainspring is actively expanding manufacturing capacity, so Engineering openings linked to factory build-out or process engineering tend to have genuine hiring urgency. Prioritize those postings when targeting the company, as sponsor willingness correlates with roles that are hard to backfill.
Confirm E-3 eligibility before your first interview
If you're an Australian citizen, the E-3 visa is available without a lottery and can be filed directly at a U.S. consulate. Raising this early in the process signals you understand your options and can reduce the employer's perceived sponsorship burden significantly.
Browse open Engineering roles using Migrate Mate
Mainspring Energy's Engineering openings that include visa sponsorship are filterable by visa type on Migrate Mate. Use it to identify which specific roles the company is currently hiring for before reaching out to recruiters or applying directly.
Prepare your degree evaluation before the offer stage
If your engineering degree is from outside the United States, get a credential evaluation from a NACES-member organization before you receive an offer. USCIS requires evidence of U.S. equivalency for H-1B specialty occupation petitions, and having it ready prevents delays after the offer is signed.
Understand the PERM timeline if you're targeting permanent residence
EB-2 and EB-3 sponsorship requires the employer to complete PERM labor certification with the DOL before filing the immigrant petition. That process typically takes 12 to 18 months before USCIS even receives the I-140, so raise your long-term goals during the offer negotiation, not after you've started.
Engineering at Mainspring Energy jobs are hiring across the US. Find yours.
Find Engineering at Mainspring Energy JobsFrequently Asked Questions
Does Mainspring Energy sponsor H-1B visas for Engineers?
Yes, Mainspring Energy sponsors H-1B visas for Engineering roles. The company has a documented history of filing H-1B petitions for engineers across mechanical, electrical, and manufacturing disciplines. Because H-1B is subject to an annual lottery, timing your application cycle correctly matters. Your employer files the petition with USCIS, and the registration window typically opens in March each year.
How do I apply for Engineering jobs at Mainspring Energy?
You can browse and apply for Engineering roles at Mainspring Energy directly through their careers page or through Migrate Mate, which filters for visa-sponsoring employers and shows open Engineering positions by visa type. Tailor your application to the specific engineering discipline listed, whether that's manufacturing engineering, systems integration, or hardware development, since Mainspring hires across several distinct tracks.
Which visa types does Mainspring Energy commonly sponsor for Engineering roles?
Mainspring Energy sponsors H-1B, E-3, TN, and F-1 OPT for Engineering positions, and supports EB-2 and EB-3 Green Card pathways for longer-term employees. Australian engineers benefit from the E-3 option, which has no lottery and allows consular filing. Canadian and Mexican engineers may qualify for TN status, which covers engineering occupations defined under the USMCA agreement.
What qualifications does Mainspring Energy expect for Engineering roles?
Mainspring's Engineering roles generally require a bachelor's degree or higher in a relevant engineering discipline, such as mechanical, electrical, chemical, or manufacturing engineering. Hands-on experience with hardware development, production systems, or energy technology is valued. For visa sponsorship purposes, your degree must correspond to the specific role, since USCIS evaluates specialty occupation status on a position-by-position basis.
How long does the visa sponsorship process take for an Engineering offer at Mainspring Energy?
Timeline depends on visa type. H-1B petitions filed under regular processing can take three to six months after the October 1 start date, while USCIS premium processing reduces adjudication to around 15 business days. E-3 consular appointments in Australia currently run two to six weeks. TN status for Canadians can be obtained at a port of entry on the same day as travel.
See which Engineering at Mainspring Energy employers are hiring and sponsoring visas right now.
Search Engineering at Mainspring Energy Jobs