Commissioning Operations Engineer

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.

We are looking to build relationships with people who share our values:

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.

More information can be found at

Mainspring Energy seeks a Commissioning Operations Engineer to design and implement resilient, clean power solutions for Commercial & Industrial customers. This involves customer engagement, site visits, and configuring & starting up custom systems based on Mainspring's linear generators. This new role offers an opportunity to shape future workflows and is ideal for analytical engineers comfortable in dynamic settings. The Linear Generator is a complex system requiring a strong understanding of operations, systems engineering, and data analysis.

We are looking for a driven and inquisitive individual to excel in this interdisciplinary position.

• 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

• Bachelor’s degree in mechanical engineering, electrical engineering, physics, or equivalent
• Experience in project management
• Strong organizational and communication skills
• Understanding of electrical power distribution and control…