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
We are seeking a Staff Supply Chain Project Manager to take on our most complex, ambiguous, and highest-visibility programs. In this senior individual-contributor role, you will own the supplier-facing side of program execution across New Product Introduction (NPI), End-of-Life (EOL), and Operations & Maintenance (O&M) scope — often across multiple programs or commodities at once — and act as the critical bridge between Engineering, Commodity/Category Management, Supplier Quality Engineering and external Suppliers. Beyond running your own programs, you will set the playbook other Project Managers follow: shaping process, mentoring less-senior PMs, and representing Supply Chain in cross-functional and executive forums. The ideal candidate operates with a high degree of autonomy, exercises sound judgment in ambiguous or unprecedented situations, and can influence outcomes across teams without direct authority.
Program & Engineering Change Execution
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Own supply-chain-side program management for the high visibility/high impact NPI, EOL, and O&M programs — driving plans, timelines, milestones, gate reviews, and budgets from early builds through production ramp and full transition to mass production
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Partner with engineering and technical program counterparts on every engineering change or project, providing supplier readiness, cost, and schedule inputs while the technical owner maintains the engineering record
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Lead supplier-facing execution of engineering changes: sharing EC and bill-of-materials data with suppliers, coordinating design-for-manufacturability feedback, and managing supplier schedules, tooling lead times, and capacity commitments
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Drive transition planning (old part to new part at the supplier) and own obsolescence and disposition strategy for parts being phased out
Supply Chain Mapping & Materials Liaison
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Develop and maintain the end-to-end supply chain map for each program you own — suppliers, procurement model, lead times, shipment/logistics plan, assembly/test model, and spares strategy
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Serve as the supply chain liaison with contract manufacturers (CMs), key suppliers and manufacturers, coordinating materials readiness from prototype builds through volume ramp
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Manage spend against program budgets, and drive production risk buys or strategic buffers when needed to protect the build schedule
Supplier Readiness & Risk Management
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Own material readiness across program phases: proactively identify supply risks (lead-time changes, shortages, capacity constraints, design updates) and drive mitigation plans before they hit the build schedule
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Own project cost impact analysis and cost reporting for the supply-chain portion of each program
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Partner with tactical purchasing and commodity/category management resources, and support other commodities or cross-functional projects when workload allows
Leadership, Strategy & Process Ownership
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Define and continuously improve the processes, templates, and best practices other Project Managers use to run supplier-facing program execution
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Mentor and coach less-senior Project Managers, providing guidance on complex supplier situations, escalations, and program trade-offs
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Represent Supply Chain in executive and cross-functional forums, influencing program strategy and decisions without relying on formal authority
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Identify and lead cross-program or cross-commodity initiatives (e.g., process redesign, tooling/systems improvements, org-wide reporting standards) that raise the bar for the broader team
Reporting & Continuous Improvement
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Maintain project tracking and reporting for the supply-chain portion of the project schedule and keep program status visible to stakeholders
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Deliver regular, data-driven status updates on program and supply chain readiness to leadership, proactively flagging risks and schedule changes
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Own relevant supply chain KPIs and drive process improvements that help the team scale program execution
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Support supplier performance reporting and business reviews alongside Commodity/Category Managers
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Education: Bachelor’s degree in Supply Chain Management, Engineering, Business Administration, or a related field; Master’s degree a plus
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Experience: 10+ years in supply chain program management, NPI program management, or commodity/category management within a manufacturing or hardware environment, with a track record of leading full lifecycle transitions from NPI to mass production
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Demonstrated ability to independently own the most complex, ambiguous, or highest-visibility programs, and to exercise sound judgment with minimal oversight
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Track record mentoring or informally leading other Project Managers, and influencing program strategy and decisions across teams without formal authority
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Working knowledge of NPI, EOL, and O&M program lifecycles, and of change-management processes
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Skilled in supply chain risk assessment and resiliency planning, including proactive supplier follow-up on delivery issues and critical-component escalations
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Strong communicator who can hold suppliers accountable while building collaborative, trust-based relationships across engineering, commodity management, and manufacturing partners, and who can present clearly and credibly to executive stakeholders
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Hands-on experience with project tracking tools and standard supply chain/ERP systems; comfort analyzing supply chain data and performance metrics to inform decisions
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Analytical experience or knowledge — comfort working with cost, schedule, or supplier performance data to build reporting and inform decisions — is a plus
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Experience building or customizing AI-powered tools or applications (e.g., using Claude or similar large language model platforms) to automate analysis, reporting, or workflows is a plus
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PMP (Project Management Professional), APICS/ASCM (CPIM or CSCP), or CPM/CPSM certification is a plus
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.
\nDoes 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.
In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.