Jobs at Mainspring Energy

Monitor system alerts overnight, follow troubleshooting flowcharts, restart hardware or escalate to senior engineers, maintain detailed logs, and provide flexible shift coverage including weekends and vacation coverage. Work independently on electro-mechanical hardware and software systems, executing defined procedures to resolve issues promptly.

Lead federal advocacy and strategy to advance Mainspring's linear generator technology. Engage the White House, DOE, Commerce, Congress, and committees; secure federal funding, loans, and public-private partnerships; manage DC lobbying firms; build coalitions with industry and NGOs; shape legislation and regulatory outcomes; and scale government-channel business development and sales.

Lead design and development of frame and air spring systems for Linear Generators, ensuring structural integrity and performance while collaborating with cross-functional teams to meet engineering requirements.

Lead cross-functional coordination between Sales, Legal, Finance, Project Delivery, Product, and Leadership to drive commercial contract negotiation and execution. Manage multiple deals, track contract status, remove blockers, standardize templates and fallback positions, and implement process improvements and automation to improve contracting efficiency and visibility.

The Senior Manager of Channel Sales will drive revenue growth in Mexico and the Caribbean by recruiting partners, managing deals, and executing market strategies for Mainspring's energy solutions.

Own supplier quality from NPI through volume production for complex components and special processes. Develop control plans, approve PPAPs, run SPC and Cp/Cpk analysis, lead supplier audits and SCAR closure using 8D, manage NCR dispositions, and serve as SQE subject-matter expert for special processes.

Lead the design and deployment of control systems for automation in manufacturing, ensuring quality and compliance while mentoring junior staff.

Provide business-minded legal advice and lead negotiation of complex commercial agreements (equipment/project sales, O&M, EPC, financed transactions). Build contract templates, playbooks, and scalable processes; partner with Sales, Finance, Project Delivery, and Operations; and deliver training to elevate organizational legal IQ.

The Reliability Test Engineer will lead experiments for Linear Generators, collaborating with engineering disciplines, troubleshooting, analyzing data, and improving testing processes.

Lead release management for embedded hardware and control software, define deployment strategies, manage versioning and rollback, communicate release impact to stakeholders, coordinate Field Operations during updates, and aggregate deployment feedback to improve reliability.

The Test Engineer will perform hands-on testing on Linear Generator units, develop testing processes, analyze data, and collaborate with engineering teams.

The Associate Technical Writer will create and maintain manufacturing and service documentation, authoring technical content and generating visuals using CAD. Collaboration with various teams and onsite work is required.

Lead the structural design and alignment for critical components of the Linear Generator, including testing and model validations while collaborating across teams.

Lead ~25 engineers and own 40-50% of a mechanical portfolio for a modular 250 kW-class linear generator. Drive risk mitigation, engineering review discipline (FMEA, DVP&R, tolerance analysis), supplier/manufacturing partnership, and development of future leaders to scale reliable power-generation hardware.

Lead the design of electrical enclosures and systems, manage engineers, and ensure project milestones through cross-functional collaboration.

Serve as Mainspring's on-site quality liaison at a Monterrey contract manufacturer: enable inspection and test execution, approve FAI/FAT and control plans, coach local quality team, drive RCCA/CAPA, manage KPIs and document control, and partner on continual improvement to ensure volume production quality of linear generator assemblies.

The Senior Sales Engineer develops system architecture and designs while providing technical expertise throughout the sales process, ensuring execution readiness and architectural integrity.

Lead and build tax compliance and risk processes: manage federal/state income tax filings, ASC 740 provisions, multi-state sales/use and property tax, support audits, oversee corporate insurance matters, implement tax automation, and partner cross-functionally to scale tax and risk management functions.

Responsible for the design and optimization of electrical enclosures and cables, guiding cross-functional teams and mentoring junior engineers for successful project execution.

Lead PLM as a cross-functional business program, ensuring alignment across functions, defining the roadmap, and improving product lifecycle management capabilities.