Mainspring Energy

• Operate and test our Linear Generator units after new site installations to allow seamless integration into Mainspring’s growing LGen fleet • Travel to customer sites and project locations to support new installations, site acceptance tests, and customer demonstrations • Enhance current commissioning procedures to improve testing efficiency and shorten timelines. • Troubleshoot and root cause operation issues with our linear generators in collaboration with other engineering teams such as Mechanical, Electrical, and Software & Controls • Work directly with our commissioning technicians to facilitate repairs, retrofits, and provide operational training on our generators • Analyze data, generate reports and communicate results from commissioning to our customers, internal project managers, and with engineering teams to facilitate learnings • Build and refine automation scripts, commissioning toolkits, and data-driven processes that streamline onboarding, testing, and fault recovery

• As an Origination Manager, you will be the “deal shepherd” responsible for managing our commercial funnel. • Your mission is to maintain momentum, build trust with clients, and seamlessly coordinate internal technical, legal, and financial teams to get deals closed. • Act as the commercial driver moving newly identified generation opportunities through the development and contracting pipeline • Serve as a highly responsive, trusted point of contact for utilities (IOUs, Munis, and Co-ops), developers, and large energy buyers • Coordinate internal stakeholders across engineering, regulatory, finance, legal, and operations to ensure technical and commercial alignment • Navigate RTO/ISO frameworks, power market fundamentals, and transmission interconnection processes to support project delivery • Support the structuring, negotiation, and implementation of PPAs, tolling agreements, capacity agreements, and related commercial documents • Synthesize complex commercial, technical, and regulatory data into clean, executive-level presentations and narratives for senior leadership

• Drive outbound sourcing campaigns for high-priority engineering roles • Build targeted pipelines across hardware, mechanical, electrical, firmware, controls, manufacturing, and software engineering disciplines • Conduct detailed talent mapping and market research for niche or hard-to-fill skill sets • Partner closely with recruiters and hiring managers to align on candidate profiles and outreach strategies • Develop personalized, high-conversion outreach that clearly communicates Mainspring’s mission, culture, technology, and growth trajectory • Leverage sourcing platforms and alternative channels to identify high-signal candidates • Utilize AI-enabled sourcing tools and automation thoughtfully to improve search precision, messaging personalization, workflow efficiency, and candidate engagement • Qualify and conduct initial outreach conversations as needed • Track sourcing metrics (response rates, conversion rates, from posting to interviews) and continuously optimize strategy • Maintain clean, accurate data within the ATS

• Build, manage, and develop a team of commodity managers and sourcing program managers; establish a management layer as the function scales. Own the departmental budget, headcount plan, and organizational sourcing policies and process standards • Serve as the supply chain escalation point to executive leadership; reconcile competing priorities across Engineering, Finance, Legal, and Operations to drive business results • Partner with Engineering and Product Management as a core member of the product roadmap process, contributing supply chain input to feature definition across deployment environments; own DFM and DFX to ensure manufacturability, sourcing optionality, and cost competitiveness are built into designs from the earliest stages of NPI • Set and execute commodity strategy - make/buy frameworks, preferred supplier lists, risk tiering - targeting best total cost across price, lead time, quality, and working capital • Develop and implement the inbound logistics and procurement strategy for the electrical commodity portfolio; support MRP/ERP system development and ensure procurement parameters reflect supply chain strategy • Own the sourcing strategy for Mainspring’s AC-to-DC product transition, including BOM-level lead time analysis, risk buy decisions, and production readiness • Source and qualify power conversion equipment (inverters, transformers, skidded systems) across multiple suppliers to eliminate single-source dependencies; ensure business continuity and benchmark against the competitive supply landscape • Own and execute a multi-path battery and BMS sourcing strategy compliant with FEOC and IRA requirements across non-restricted geographies; monitor FEOC, IRA/ITC, USMCA, and tariff developments to adjust strategies proactively; brief executive leadership on investor-facing compliance and cost readiness • Identify, evaluate, and onboard contract manufacturers for electrical assemblies (US/Mexico, USMCA-compliant); lead rapid-turnaround sourcing for R&D electrical builds including PCBAs, connectors, cables, sensors, and electromechanical assemblies • Own should-cost modeling across the electrical commodity portfolio; lead cost-down initiatives with annual savings targets tied to product cost roadmap milestones and working capital improvement goals • Negotiate contracts from R&D quick-turn through long-term volume agreements; own supplier risk assessments, SPOF mitigation planning, and business continuity for critical commodities

• Partner with Sales teams to support customer contracting from pre-deal structuring through execution • Act as the primary cross-functional coordinator between Sales and internal stakeholders during commercial negotiations • Drive alignment among Legal, Finance, Project Delivery, Product, and Executive teams on deal terms • Translate commercial objectives into actionable internal requirements and approvals • Facilitate internal review and approval workflows for customer agreements • Maintain visibility into active deal pipelines and proactively remove blockers to contract execution • Track contract status, approvals, open issues, and execution timelines across multiple concurrent deals • Partner with Legal to standardize templates, fallback positions, and negotiation guidance

• Monitor system alerts and notifications during assigned overnight shifts • Follow established troubleshooting protocols to address issues • Execute problem-solving actions based on provided flowcharts • Restart hardware systems or escalate issues to senior engineering staff as needed • Maintain detailed logs of alerts and actions taken • Ensure all issues are resolved within the allotted time or escalated appropriately • Provide weekend and flexible shift coverage, including filling in for team absences or vacations as needed

• Own and exceed revenue targets for Mexico and the Caribbean regions through strategic channel partners • Identify, vet, and onboard Tier 1 partners (EPCs, Energy Developers, and Integrators) with a specific focus on the Mexico market • Lead cross-functional internal teams (Product, Finance, Engineering) to support partners in closing high-contract-value transactions • Move partners from "signed" to "productive" by delivering high-impact training on Mainspring’s value proposition in power quality, resiliency, and fuel flexibility • Execute go-to-market strategies tailored to the Mexican utility environment, focusing on behind-the-meter applications and data center load growth • Maintain a rigorous, data-driven approach to partner performance, using KPIs to manage pipeline health and provide accurate revenue forecasts to leadership

• Lead rapid-turnaround sourcing for R&D electrical builds: prototype PCBAs, connectors, cables, sensors, power distribution components, and electromechanical box assemblies. • Identify, evaluate, and onboard new contract manufacturers for electrical assemblies with US and Mexico manufacturing presence (USMCA-compliant). • Own the sourcing strategy for Mainspring’s AC-to-DC product transition, including BOM-level lead time analysis, risk buy decisions, and production readiness accountability. • Source and evaluate power conversion equipment (inverters, transformers, skidded systems) across multiple suppliers to reduce single-source risk. • Develop and execute a multi-path battery and BMS sourcing strategy compliant with FEOC and IRA (Inflation Reduction Act) requirements, evaluating multiple chemistries and form factors from non-restricted geographies. • Qualify non-FEOC BMS design partners and battery cell/pack suppliers, managing the full cycle from NDA through spec distribution, quote evaluation, and development contract negotiation. • Collaborate with Engineering on DFM reviews, connector and material strategy, corrosion protection solutions, and cable redesign opportunities. • Drive supplier selection committee processes, presenting sourcing recommendations to leadership with clear trade-offs on cost, risk, and schedule. • Negotiate pricing and contracts from R&D quick-turn purchases through long-term volume agreements. • Monitor FEOC, IRA/ITC, USMCA, and tariff developments to proactively adjust sourcing strategies.

• Architect Embedded Agent Cycles: Transition Mainspring from "AI-assisted" tasks to a model where autonomous and semi-autonomous AI agents are natively integrated into the engineering lifecycle—from code generation and hardware simulation to automated testing and documentation • Workflow Optimization: Identify and re-engineer high-impact engineering bottlenecks, deploying AI agents that act as functional members of the development team • ROI & Performance Measurement: Establish a data-driven framework to measure the impact of AI on engineering velocity, error reduction, and resource optimization. You will be responsible for defining and reporting on clear ROI metrics for all AI initiatives • Standardized Guardrails: Design and implement automated guardrails within the CI/CD pipeline to ensure AI-generated output meets Mainspring’s rigorous safety, security, and quality standards • Responsible Agent Execution: Establish governance frameworks for agentic behavior, including "human-in-the-loop" checkpoints, audit logs, and access controls to prevent drift or unauthorized actions in production environments • Model Evaluation: Build rigorous benchmarking systems to evaluate model reliability and cost-effectiveness, ensuring a lean and high-performing AI stack • Agentic Infrastructure: Design the end-to-end infrastructure required to support multi-agent systems, including orchestration layers, long-term memory (Vector DBs), and tool-use capabilities (RAG) • Build vs. Buy Strategy: Act as the technical authority on whether to leverage third-party AI platforms or develop proprietary agentic tools tailored to our specific hardware-software engineering needs

• Own and drive complex product development programs: Lead a portfolio of programs ranging from focused tactical initiatives to multi-year, company-wide efforts, ensuring delivery against technical, schedule, and business objectives • Program-level decision ownership: Frame tradeoffs, resolve cross-functional conflicts, and drive alignment when priorities compete • Executive and stakeholder communication: Communicate clearly and effectively with senior leadership and external partners to drive decisions, provide program visibility, and escalate risks proactively • Cross-functional leadership: Partner closely with engineering, reliability, test, operations, supply chain, and manufacturing teams to align priorities and streamline execution • Manufacturing readiness and scale: Drive programs through NPI, manufacturing handoff, and production ramp, ensuring design, supply chain, and operational readiness • Tools, process, and systems optimization: Leverage tools such as Jira and enterprise data systems to improve program transparency, execution discipline, and cross-team collaboration • Risk management: Identify technical, operational, and schedule risks early; lead mitigation planning and execution across teams