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Mainspring Energy

Onsite linear generators for scalable power

Field Service Technician

Equipment Field ServiceConfirmed live in the last 24 hours
Full-timeWorcester, MA, USA

About the Job

Requirements

  • A minimum of 3 years of experience with mechanical assembly and/or repair.
  • Experience using precision measuring tools to .001 inch, including micrometers, bore gauges, and gauge blocks, and familiarity with torque wrenches and repair documentation.
  • Ability to stand for long periods, lift up to 50 pounds, and wear required personal protective equipment.
  • Knowledge of using and maintaining basic tools, including torque wrenches, and applying torque specifications.
  • Experience following written and verbal work instructions while on site.
  • A valid driver's license is required.
  • Ability to work effectively with others as part of a team.
  • Ability to learn quickly and work in a self-motivated and safety-oriented manner.

Responsibilities

  • Mechanically repair and/or maintain generator components and assemblies in accordance with procedures and build checklists to meet customer requirements.
  • Collaborate with engineers to fix, repair, and redesign components and assemblies.
  • Conduct mechanical inspections of deployed units and document condition information to support debugging and troubleshooting.
  • Be available to work rotational on-call shifts according to the written schedule to provide service and support to customers.

Desired Qualifications

  • Experience with assembly of automotive, aviation, and/or heavy equipment, including HVAC, elevators/lifts, or industrial equipment.
  • Knowledge of Google Workspace.
  • A Class A commercial driver's license.

About the Company

Mainspring Energy

Onsite linear generators for scalable power

Mainspring Energy designs and ships onsite linear generators that produce electricity for commercial and industrial customers, data centers, utilities, and microgrids. The kit uses a straight-line motion that is converted into electric current by magnets moving through copper coils, driven by a flameless, low-temperature air-and-fuel reaction with only two moving parts and an oil-free air-bearing. The system is fuel-flexible, handling natural gas, biogas, hydrogen, ammonia, and propane, and it scales from about 250 kW to more than 100 MW, with near-zero NOx and no after-treatment required. The company sells power as a service, enabling installations with no upfront cost and ongoing payments based on energy use, aiming to lower operating costs and increase energy resilience for its customers.

Company size
501-1,000
Company stage
Series F
Total funding
$813M
Headquarters
Menlo Park, CA
Founded
2010

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