Job OverviewMainspring is seeking a versatile Systems Integration Engineer to lead the architectural design and deployment of the hardware-to-software interface for our Linear Generator sites. You will serve as a cross-functional technical lead for Balance of System (BoS) strategy, developing modular hardware platforms that scale from small microgrids to utility-scale power plants. In this capacity, you will own the full design lifecycle and vendor management for our Industrial Control Panels (ICP), which serve as the critical communication and I/O hub for our Linear Generator sites.
Responsibilities- Manage the full design cycle for NEMA 3R and 4X control cabinets, including component selection for industrial PCs, managed switches, and I/O modules
>- Design and implement I/O mapping for control and safety systems, including E-Stop synchronization, blackstart triggers, and ground-fault detection using Modbus/TCP-based edge devices
>- Architect robust site-level communication networks, including managed VLAN structures and fiber/copper hybrid topologies for high-demand environments
>- Be the primary technical interface for outsourced design firms and panel manufacturers, ensuring high reliability designs, UL 508A compliance and manufacturing scalability
>- Lead technical reviews and coordinate with contract manufacturers to drive cost-reduction, design-for-manufacturability (DFM), and UL 508A certification
>- Manage the physical and electrical interfaces between the linear generator and external balance-of-system equipment, such as external grid-tied inverters
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Qualifications- Bachelor's or Master's degree in Electrical Engineering or a related field
>- 5+ years of demonstrated experience developing industrial control panels and integrated systems
>- Strong understanding of DC/AC power distribution, relay logic, and industrial communication protocols (Modbus, Ethernet/IP)
>- Demonstrated experience integrating complex hardware platforms with third-party software controllers or utility-level aggregators
>- Experience with UL 508A standards, control panel layout, and thermal management in outdoor environments (-30C to 50C)
>- Proven ability to manage complex project dependencies, including hardware fitment within tight spatial constraints
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Bonus- Familiarity with grid-tied inverters, battery pre-charge circuits, or Linux-based industrial PCs
>- Experience with PLC programming, Microgrid or SCADA system integration
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$130,000 - $153,000 a year
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.
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.
