Senior Sales Contracting Manager

Company Overview

Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable local power generation technology, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid‑scale operations.

The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless reaction with near‑zero NOx emissions. Backed by top‑tier investors including Khosla Ventures, Bill Gates, American Electric Power, Lightrock, and General Catalyst, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion.

Inspired by our vision of the affordable, reliable, net‑zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.

Pragmatic Optimism. Building a new category of world‑class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.

Excellence without Ego. We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world‑class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.

Proactive Collaboration. The integration and cross‑disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.

This role serves as the bridge between Sales and internal stakeholders during the commercial contracting process. Acting as both a project manager and strategic coordinator, the position drives alignment across Sales, Legal, Finance, Project Delivery, Operations, Product, and Leadership to ensure customer agreements are structured, reviewed, approved, and executed efficiently.

The role is responsible for proactively coordinating cross‑functional activities, removing blockers, driving accountability, and maintaining momentum throughout the deal lifecycle. In addition to supporting day‑to‑day deal execution, this position plays a key role in identifying process gaps, implementing scalable improvements, and driving continuous improvement initiatives that enhance contracting efficiency, visibility, communication, and overall commercial operations effectiveness.

• 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

• Build scalable systems and processes to improve contracting efficiency and cycle times
• Analyze bottlenecks and recommend process improvements
• Develop reporting and metrics related to contract turnaround time, approval timelines, and deal velocity
• Drive continuous improvement initiatives across commercial…