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Field Service Technician (Long Island, NY)

Mainspring Energy
York, NY Full Time
POSTED ON 10/10/2026
AVAILABLE BEFORE 12/14/2026
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 OverviewWe are searching for highly motivated, mechanically inclined individuals to join our growing Field Service team. In this position, you will play a direct role in completing planned and reactive service operations on our generators. In this position, you will play a key role in maintaining system uptime, availability, and performance for deployed units on customer sites in a specific region. You will train at our headquarters in Menlo Park, CA, and be assigned to a particular service region requiring travel. For those inclined, there are ample growth opportunities within Mainspring, and we offer full benefits, including vacation and sick time, 401K, and pre-IPO stock options.


Responsibilities

  • Mechanically repair and/or perform maintenance on components and assemblies that make up our generators in accordance with procedures and build checklists in order to meet customer requirements

  • Collaborate with engineers to fix, repair, and redesign components and assemblies

  • Conduct mechanical inspections of deployed units, documenting condition information for use by our team for debugging or troubleshooting

  • Be available to work rotational on-call shifts, as per the written schedule, to provide optimal service and support for our customers



Qualifications

  • Minimum of 3 years of experience with mechanical assembly and/or repair. Experience with automotive, aviation, and/or heavy equipment (i.e. HVAC, elevators/lifts, or industrial equipment) assembly a plus

  • Experience with precision measuring, down to .001”, using micrometers, bore gauges, gauge blocks, etc. Also, familiarity with torque wrenches and documentation of repairs performed

  • Candidates must be able to stand for long periods of time, lift to 50 lbs., and wear required PPE

  • Must have knowledge of how to use and maintain basic tools, such as torque wrenches and torque specifications

  • Must have experience with following written and verbal work instructions while on-site

  • Excellent communication skills, software knowledge of Google Workspace is a plus

  • A proven track record for the ability to work well with others as part of a dynamic team

  • Ability to learn quickly, is self-motivated and safety oriented

  • Valid Driver’s license required; Class A Commercial Driver’s License preferred



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.


We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.



This position is onsite in Long Island, NY. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO stock options benefits bonus.

Salary : $26 - $35

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