Staff Project Engineer - Grid Scale
Full-time
US
Oct 19, 2026
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About the Role
About Mainspring Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more. The core values that ground our work, guide our decisions, and connect us together: Pragmatic Optimism Excellence without Ego Proactive Collaboration Job Overview Project Engineers report to the Project Engineering Manager within the Project Delivery department. A key enabler of Mainspring’s mission is the ability of its team to deliver solutions based on our linear generator technology that solve customer problems in the cross-section of resiliency and clean power supply. The project engineering team provides the technical expertise, guidance, and support to deploy linear generators into the field efficiently—building customer confidence and enabling future scalability. This role focuses on our largest deployments: sites of 10MW and above that either connect directly to the grid or serve large load sites such as data centers. Responsibilities This role will be responsible for: Leading the overall technical definition and direc