Senior Quality Engineer

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 Quality System & Relationship Management 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

Qualifications 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 Must-Have 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 Like to have You have used collaboration tools like Basecamp, Asana or Trello and relational databases like Airtable or Quickbase to achieve results with X-functional teams \n 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.

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