Senior Staff Commodity Manager, Mechanical

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 Mainspring Energy is rapidly scaling production of its breakthrough Linear Generator technology, necessitating a highly experienced and strategic Senior Staff Commodity Manager to lead global sourcing for graphite materials and mechanical components - with a strong emphasis on isostatic impregnated graphite - and select critical mechanical components. This role is essential for developing and executing comprehensive sourcing strategies, managing supplier relationships, and ensuring the procurement of materials that meet stringent technical, quality, and commercial requirements. The ideal candidate will be accountable for the entire lifecycle of assigned commodities, including supplier identification, technical qualification, contracting, risk mitigation, and performance monitoring. Cross-functional collaboration with engineering, materials science, operations, and quality is essential to meet business objectives and drive continuous improvement, so there is a strong preference for this hire to be able to come on site regularly.

Own and execute global commodity strategies for complex mechanical components, including CNC machining, castings, forgings, sheet metal, weldments, heat-treated parts, thermal spray, and laser cladding

Lead the graphite materials category, defining commercial strategy for high-temperature sealing and high-performance applications in partnership with Engineering

Drive cost reduction through should-cost modeling, DFM collaboration, and scalable supplier strategies

Mitigate supply and technical risk through alternate sourcing, performance monitoring, and data-driven cost models

Establish sourcing standards, best practices, and commercial frameworks that scale across mechanical categories and influence broader Supply Chain strategy

Build long-term supplier partnerships that ensure quality, cost, delivery, and scalability beyond transactional sourcing

Expand and diversify the global supply base to support production scaling and the transition to high-volume manufacturing, while reducing supply risk and strengthening supply chain resilience

Lead sourcing and supplier development activities in China, managing regional risk and on-site engagement

Set and enforce supplier standards for quality, delivery, and compliance

Drive continuous improvement through joint process reviews, performance metrics and corrective actions

Lead negotiation and execution of MSAs and LTAs, including pricing, liability, capacity commitments, and service-level agreements

18+ years of experience in strategic sourcing, commodity management, or supply chain leadership

Strong background sourcing custom mechanical components and managing complex BOMs

Engineering degree (Mechanical, Materials, Chemical preferred) or equivalent technical background

Ability to rapidly absorb and operate in highly technical domains (e.g., advanced materials)

ERP and procurement analytics proficiency (e.g., SAP, Oracle, NetSuite)

Bay Area presence required

Experience sourcing graphite materials for high-temperature or unlubricated applications

Mandarin proficiency

Advanced degree or CPSM/Six Sigma certification

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