Field Service 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

Job Overview

As a Field Service Programs & Operations Engineer at Mainspring Energy, you will serve as a technical leader supporting the Operations & Maintenance organizations. You will bridge Field Service, Operations, Quality, and Engineering by translating field challenges into practical technical solutions, scalable service programs, and improved maintenance practices.

This is a field-facing and hands-on engineering role. You will work directly with Field Service Technicians, Supervisors, and Managers to support advanced troubleshooting, develop field service tooling and processes, and plan and execute special projects across the fleet. The role will also support the development and implementation of programs that improve fleet availability, safety, reliability, and field execution.

This position does not have direct people management responsibility but will be expected to provide technical leadership, mentorship, and cross-functional coordination.

Responsibilities

• Develop and implement Field Service programs, procedures, and processes that improve maintenance execution, safety, reliability, and fleet availability
• Provide advanced technical troubleshooting support for complex mechanical, electrical, controls, and system-level issues
• Serve as a technical bridge between Field Service and Engineering, translating field issues into engineering requirements and bringing engineering solutions into field execution
• Identify, develop, test, and deploy specialized Field Service tooling, test equipment, fixtures, and other resources that improve safety and service efficiency
• Lead and support special projects including fleet retrofits, service campaigns, and major maintenance initiatives
• Analyze field failures, maintenance activities, and fleet performance data to identify recurring issues and opportunities for improvement
• Develop and improve maintenance procedures, troubleshooting guides, work instructions, and other technical documentation
• Collaborate with Reliability Engineering, Product Engineering, Supply Chain, Manufacturing, Safety, and Field Service leadership to resolve operational and technical issues
• Mentor and provide technical guidance to Field Service Technicians and Supervisors
• Support significant customer issues, outages, and technical events as needed
• Travel to customer sites and be actively engaged in field activities as required

Qualifications

• Bachelor's degree in Mechanical Engineering, Electrical Engineering, Systems Engineering, or a related technical field
• 5+ years of experience in Field Service, power generation, O&M, industrial maintenance, commissioning, reliability engineering, or a related technical environment
• Experience troubleshooting complex mechanical, electrical, controls, or electromechanical systems
• Experience working directly with field technicians, maintenance personnel, or other hands-on technical teams
• Experience developing technical procedures, maintenance programs, tooling, or field solutions
• Strong project planning, coordination, and execution skills
• Strong analytical and problem-solving skills
• Effective communication and collaboration skills, with the ability to influence across technical and operational organizations
• Willingness and ability to work hands-on with equipment in field environments and customer sites
• Strong commitment to safety and operational excellence

Preferred Qualifications

• Previous experience as a Field Service Engineer, Senior Field Service Technician, Commissioning Engineer, or O&M Engineer
• Experience in power generation, distributed energy, utilities, or industrial equipment
• Experience with generators, engines, turbines, electrical distribution systems, controls, or other complex electromechanical systems
• Experience with field tooling or diagnostic equipment development
• Experience with Salesforce Field Service, Quickbase, CMMS/EAM, ERP, SQL, Power BI, or similar platforms
• Experience supporting high-visibility enterprise customers

Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.

In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.

This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits + bonus.