Senior Quality Engineer

Mexico·MonterreySalarysenior

EngineeringQuality Engineer

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equipping, aligning, and supporting the global contract manufacturer quality team to own and execute quality outcomes on Mainspring Energy's behalf.

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EngineeringQuality Engineer

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

While Mainspring is growing rapidly to scale production of its linear generators, quality is a crucial element to the success of our mission. The Senior Quality Engineer serves as Mainspring Energy's on-site quality representative embedded at global contract manufacturer Monterrey facility. This role is the critical bridge between Mainspring Energy's engineering and quality organization and global contract manufacturer's local quality team, enabling and empowering the global contract manufacturer to meet Mainspring Energy's product quality, inspection, and test requirements. Rather than functioning as an individual contributor on the floor, this person leads through influence: equipping, aligning, and supporting the global contract manufacturer quality team to own and execute quality outcomes on Mainspring Energy's behalf.

Ensure global contract manufacturer inspectors are trained and aligned on Mainspring Energy-specific requirements for incoming, in-process, and final inspection of power generation assemblies, sub-assemblies, and critical components

Review and approve in-process and final inspection plans and control plans developed by the global contract manufacturer quality team; provide timely feedback and clarification on Mainspring Energy engineering intent

Support global contract manufacturer's MRB (Material Review Board) process by facilitating rapid disposition decisions and connecting the global contract manufacturer quality team with Mainspring Energy engineering to resolve NCRs and prevent production holds from stalling the line

Enable global contract manufacturer to own FAI (First Article Inspection) execution; review completed packages on behalf of Mainspring Energy and coordinate approval with the engineering team

Ensure global contract manufacturer has current, controlled copies of all applicable Mainspring Energy drawings, specifications, and workmanship standards; manage document updates and communicate changes proactively

Align global contract manufacturer's test team with Mainspring Energy-approved test procedures and acceptance criteria for power generation units, including load bank testing, voltage/frequency regulation, transient response, and factory acceptance tests (FAT)

Review and provide guidance on test plans and procedures developed or executed by global contract manufacturer; identify gaps and work with Mainspring Energy test engineering to resolve ambiguities before they impact throughput

Support global contract manufacturer in reviewing and accepting test data packages; coach the team on identifying out-of-tolerance conditions and escalating appropriately to Mainspring Energy test engineering

Facilitate rapid resolution of test anomalies by connecting global contract manufacturer test technicians with the right Mainspring Energy engineering and quality resources

Ensure global contract manufacturer maintains a compliant calibration program for all measurement and test equipment (M&TE) used in Mainspring Energy product acceptance

Lead cross-functional Root Cause Corrective Actions (RCCA) alongside internal software/test engineering teams to reduce automated test station faults and NTF (No Trouble Found) yields

Act as the day-to-day quality liaison and trusted partner between Mainspring Energy and global contract manufacturer quality and operations leadership; build a collaborative, high-accountability relationship that drives shared ownership of quality outcomes

Coach and mentor global contract manufacturer quality engineers on Mainspring Energy's quality expectations, root cause analysis methodologies (8D, 5-Why, Fishbone), and CAPA rigor; elevate the team's capability over time

Enable global contract manufacturer to lead internal process and product audits to Mainspring Energy standards; participate as an observer and provide structured feedback rather than conducting audits independently

Own the quality performance reporting cadence — consolidate KPIs (yield, first-pass test rate, NCR rate, open CAPA aging) from global contract manufacturer’s systems, validate accuracy, and present findings to Mainspring Energy quality leadership

Identify systemic quality risks through data review and floor observation; work through the global contract manufacturer quality team to drive corrective actions, rather than bypassing them

Champion continual improvement initiatives jointly with global contract manufacturer aimed at reducing defect rates, improving test cycle time, and building long-term quality system maturity at the Monterrey site

Partner with Manufacturing and Quality to review incoming Engineering Changes (ECs) and ensure that the inspection checklists, and gauges are fully updated and validated at global contract manufacturer prior to the clean point of new EC implementation

Bachelor’s degree in Engineering or related discipline

5+ years of Manufacturing Quality Engineering experience in a fast paced and high growth environment (industrial and/or automotive a plus)

Knowledge and experience with implementing APQP, PPAP and Root Cause Analysis

Six Sigma, Lean, and ASQ Certification and trainings are preferred

The position will require up to 10% travel to Mainspring HQ

You have a strong mechanical background and have successfully launched, into volume production, complex components and assemblies using quality planning from prototype through mass production stages

You have actively participated in a product development effort and thus know what it takes to transition from prototype to volume production

You have a good understanding of and have successfully implemented gates within a product development process

You can thrive in structured and unstructured environments and are not dissuaded at the prospect of making hard decisions about what is important and urgent against a backdrop of limited resources

You have used data collection/analysis/dashboarding to inform effective decision making

Problem-Solving Expertise: Demonstrated track record of leading root-cause investigations for complex manufacturing escapes using structured methodologies (e.g., 8D, 5 Whys, Fishbone, DMAIC) to implement robust, permanent corrective and preventive actions

You have used collaboration tools like Basecamp, Asana or Trello and relational databases like Airtable or Quickbase to achieve results with X-functional teams

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.