Senior Buyer/Planner

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
The Buyer/Planner will be managing various commodities and suppliers from “quote to pay” to ensure continuity of supply and reduce the cost of the assigned portfolio. The candidate will be organized, communicative, hands-on and will have regular shop floor engagement and constant cross-functional engagement with production, NPI, engineering, logistics, material handling, and suppliers.  The role balances tactical buying excellence with advanced planning, supplier coordination, and cost control, ensuring uninterrupted supply while supporting business objectives.