Cost Engineer

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 motivated and detail-oriented Cost Engineer to join our SC PM & Cost Engineering team. This position provides an excellent opportunity to gain hands-on experience in supply chain cost analysis and optimization strategies, should-cost modeling, and capacity reporting inside a fast-moving hardware environment. You will work closely with the experienced team members to support BOM cost roll-ups, cost-down tracking, and capacity planning, while building the analytical and cross-functional skills to grow into more senior cost engineering ownership over time.

Cost Analysis & Should-Cost Support Assist in conducting cost analysis across the supply chain — procurement, manufacturing, transportation, and distribution — in support of BOM cost roll-up and forecasting activities Help build and maintain should-cost and cost models to evaluate the impact of different scenarios on overall BOM cost, working under the guidance of the Cost Engineering Program Manager Research and track market trends for key cost drivers (raw material prices, labor costs, logistics rates) and summarize findings to support forecasting and cost planning Capacity Planning & Reporting Support Support the team’s capacity management process by helping compile and maintain supply and production capacity data across commodities Help develop and maintain a cost/capacity tracking database or dashboard (e.g., Smartsheet, Quickbase, Tableau, Power BI, or equivalent) to support cost reduction and capacity visibility efforts Prepare clear, data-driven reports and visuals to communicate cost and capacity metrics and project progress to stakeholders Cross-Functional Support & Project Execution Collaborate with cross-functional teams — procurement, engineering, commodity management, and finance — to collect and validate cost and capacity data Support the tracking of cost-savings initiatives, providing status updates and reporting to the team as needed Assist in maintaining project tracking so cost and capacity data stays current and accurate Support supplier engagement efforts to understand cost structures, identify cost-saving opportunities, and maintain pricing transparency Participate in ad-hoc projects and process-improvement initiatives as assigned

Bachelor’s degree in Engineering, Supply Chain Management, or a related field 0–3 years of relevant experience (internships, co-ops, or full-time experience in cost analysis, supply chain, or a related analytical role) Strong analytical skills with proficiency in spreadsheet-based data analysis (Excel, Google Sheets); comfort working with BOM or cost data Excellent written and verbal communication skills, with the ability to work effectively across teams Detail-oriented with strong organizational skills and the ability to manage multiple tasks simultaneously Eagerness to learn, take feedback well, and take on new challenges in a fast-paced, evolving environment

Familiarity with ERP systems or supply chain planning software Exposure to PLM systems (e.g., Enovia or equivalent) or willingness to learn one Foundational understanding of supply chain principles — logistics, procurement, and inventory management Prior internship or project experience in cost analysis, data analysis, capacity planning, or supply chain Experience with dashboard or database tools (e.g., Tableau, Power BI, Smartsheet, Quickbase) is a plus Experience using AI-powered tools (e.g., Claude or similar large language model platforms) to speed up analysis or reporting is a plus

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