Mainspring Energy designs and manufactures fuel-flexible linear generators—dispatchable, low-emission units scalable from ~250 kW to grid-level arrays—deployed onsite for data centers, EV microgrids, commercial, industrial, and utility customers.
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 We are seeking an innovative and highly skilled Manufacturing Engineer to lead the design, development, and implementation of assembly tooling, material handling systems, and scalable production processes for a groundbreaking large electromechanical machine. In this role, you will play a critical role in translating product designs into manufacturable, high-precision, and robust components and assemblies at scale. You will work closely with Mechanical Design engineers to drive DFM/DFX initiatives, process error-proofing, and tooling robustness, ensuring efficiency, repeatability, and quality across our production lines. The ideal candidate will have a strong background in precision fixture design, material handling solutions , overhead lift assist systems, and MES systems. Experience in precision measurement and laser-based assembly processes is a significant advantage. Additionally, this role requires end-to-end ownership, including sourcing, assembly, commissioning, and installation of designed systems. Join our team if you are ready to bring your expertise to the forefront of manufacturing technology, contributing to the success of our linear generator startup.