Sr. Field Quality Inspector

Mainspring Energy

300

Menlo Park, CA

Posted on: 2026-11-13

Category: energy

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Employment type:

Full time

Experience required:

Senior

Salary

$40.00 - $57.00

About the company:

Mainspring Energy is a power infrastructure company that designs and manufactures the Linear Generator, a novel primary power solution that delivers firm, flexible, and low-emissions electricity at the point of need. The company serves a wide range of markets including utilities, data centers, enterprise customers, and industrial operations, offering modular units that can be deployed quickly and scaled from hundreds of kilowatts to hundreds of megawatts. The Linear Generator is capable of operating on multiple fuels including natural gas, biogas, and field gas, and is designed to transition seamlessly to zero-carbon fuels over time.

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

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.

Job Overview

We are searching for highly motivated, detail-oriented individuals to join our growing Quality team. In this position, you will play a direct role in verifying that deployed generator units meet Mainspring's quality, reliability, and performance standards through hands-on field inspections and audits. You will work closely with Field Service, Engineering, and Manufacturing Quality teams to identify build and performance deviations, drive root-cause investigations, and ensure corrective actions are effectively implemented across our fleet. You will train at our headquarters in Menlo Park, CA, and be assigned to support a specific 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

Conduct scheduled and ad hoc quality inspections and audits of deployed units in the field, verifying conformance to build specifications, quality standards, and customer requirements

Perform detailed visual, mechanical, and dimensional inspections of components and assemblies, using precision measuring tools to identify defects, wear, or deviations from specification

Document inspection and audit findings thoroughly and accurately, including photos, measurements, and observations, to support root-cause analysis and continuous improvement

Partner with Field Service Technicians and Engineering to investigate quality escapes, non-conformances, and recurring issues identified in the field

Track and verify closure of corrective and preventive actions (CAPAs) related to field-identified quality issues

Support the development and refinement of field inspection checklists, audit criteria, and quality standard work

Identify trends across the fleet and escalate systemic quality concerns to Engineering and Manufacturing Quality teams

Maintain calibration and proper use of inspection and measurement equipment

Be available to travel to customer sites within an assigned region, as needed, to support inspection and audit schedules

Qualifications

Minimum of 3 years of experience in quality inspection, quality assurance, or auditing, ideally within mechanical assembly, automotive, aviation, or heavy equipment industries

Experience with precision measuring, down to .001”, using micrometers, bore gauges, gauge blocks, and other inspection tools

Familiarity with quality methodologies (e.g., root cause analysis, 8D, CAPA) and documentation practices

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

Must have experience following written and verbal work instructions, checklists, and audit criteria while on-site

Excellent written and verbal communication skills; software knowledge of Google Workspace is a plus

Strong attention to detail with a proven ability to identify and clearly document discrepancies

A proven track record of working well with others as part of a dynamic, cross-functional team

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

Valid Driver's License required; Class A Commercial Driver's License preferred

Willingness to travel to field sites within an assigned region, potentially including overnight travel