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Staff Embedded Software Engineer
Mainspring EnergyMenlo Park, United Statesfull_timeVerifiedPosted 7 Sept 2025
About the role
Company Overview
Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, 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 technology with near-zero NOx emissions.
Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, 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.
More information can be found at www.mainspringenergy.com
Job Overview
This is a software engineering role with emphasis on embedded systems.In the first week, you will close your first issue and review a colleague's merge-request.In the first month, you will deliver your first driver for a new piece of hardware.In the first year, you will contribute to the creation of our next generation architecture to enable continued expansion of our suite of sensors and actuators.
Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, 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 technology with near-zero NOx emissions.
Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, 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.
More information can be found at www.mainspringenergy.com
Job Overview
This is a software engineering role with emphasis on embedded systems.In the first week, you will close your first issue and review a colleague's merge-request.In the first month, you will deliver your first driver for a new piece of hardware.In the first year, you will contribute to the creation of our next generation architecture to enable continued expansion of our suite of sensors and actuators.
Responsibilities
- Design, implement, and maintain embedded software in C, C++ and Python.
- Lead the successful development of embedded software for various components in the system
- Mentor junior members of the team
- Invent communication protocols for use by in-house designed I/O devices
- Select computer and network hardware to balance our performance needs vs. cost
- Write emulators and unit-tests for continuous integration
- Collaborate with Controls and Electrical to drive integrated hardware/software projects from initial research through to product release
- Set up and maintain build environments, cross-compilation toolchains, and CI pipelines
- Perform code reviews, unit testing, and integration testing
- Contribute to the definition of processes and best-practices for the overall software development life cycle
- Building your own custom PC or your own home IoT system off a Raspberry Pi
- Running an LLM on your local GPU
- Contributing to /r/embedded
- Sharing your experience with programming paradigms and best practices, and picking your colleagues brains for theirs
- Letting the smoke out of some ICs (well… maybe not enjoy, but it has to happen sometimes!)
- Working with people on finding and implementing solutions for complex problems
Critically, you should enjoy doing these things collaboratively as part of a tightly-coupled and highly interactive team.If you consider things you enjoy, you might be caught:
Qualifications
- 12+ years experience programming for embedded hardware systems including design, implementation, architecture, and testing (real-time a plus)
- Expert proficiency in C/C++
- Strong Python coding skills
- Proven experience with Linux kernel builds, customization, and debugging
- Hands-on experience with build systems, cross-compilation, and CI/CD workflows
- Strong understanding of software architecture and
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