Monterrey, Nuevo León, Mexico · On-site
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 …
Skills: Quality Engineering, Root Cause Analysis, APQP, PPAP, Six Sigma
Menlo Park, California, United States · On-site
$114k–$130k/yr
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 …
Skills: Thermal Analysis, Fluids Hardware Design, SolidWorks, PLM, Finite Element Analysis
Menlo Park, California, United States · On-site
$132k–$156k/yr
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 …
Skills: Thermal Analysis, Fluids Hardware Design, SolidWorks, Finite Element Analysis, GD&T
Menlo Park, California, United States · On-site
$116k–$175k/yr
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 …
Skills: ASC 740, Tax Provision, Federal Tax Compliance, State Tax Compliance, Sales and Use Tax
Menlo Park, California, United States · On-site
$172k–$203k/yr
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 …
Skills: Battery Pack Design, Lithium-ion Battery Architecture, Supplier Management, Thermal Management, Cell Integration
Menlo Park, California, United States · On-site
$151k–$178k/yr
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 …
Skills: Reliability Testing, FMEA, Root Cause Analysis, HALT, Failure Analysis
Menlo Park, California, United States · Hybrid
$130k–$153k/yr
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 …
Skills: CAPA Leadership, Root Cause Analysis, Electrical Lab Diagnostics, PCBA Design, Failure Analysis
Menlo Park, California, United States · Hybrid
$157k–$185k/yr
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 …
Skills: Root Cause Analysis, CAPA Leadership, Electrical Lab Diagnostics, PCBA Design, Circuit Analysis
Menlo Park, California, United States · On-site
$109k–$123k/yr
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 …
Skills: Fleet Operations, Data Analysis, Troubleshooting, Incident Resolution, Python
Columbus, Ohio, United States · On-site
$26/hr–$35/hr
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 …
Skills: Mechanical Assembly, Mechanical Repair, Precision Measuring, Micrometers, Bore Gauges
Columbus, Ohio, United States · On-site
$35/hr–$50/hr
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 …
Skills: Mechanical Assembly, Mechanical Repair, Precision Measuring, Troubleshooting, Google Workspace
Stockton, California, United States · On-site
$26/hr–$35/hr
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 …
Skills: Mechanical Assembly, Mechanical Repair, Precision Measuring, Micrometers, Bore Gauges
Menlo Park, California, United States · Remote OK
Company Overview Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable local power generation technology, the Mainspring Linear Generator. Commercial, industrial, and utility …
Skills: Technical Sourcing, Talent Mapping, Market Research, AI-Powered Sourcing, Candidate Engagement
Menlo Park, California, United States · On-site
$183k–$257k/yr
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 …
Skills: Accounting Operations, Financial Close Management, General Ledger, Audit Readiness, Internal Controls
Stockton, California, United States · On-site
$35/hr–$50/hr
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 …
Skills: Mechanical Assembly, Mechanical Repair, Precision Measuring, Troubleshooting, Google Workspace
Salinas, California, United States · On-site
$26/hr–$35/hr
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 …
Skills: Mechanical Assembly, Mechanical Repair, Precision Measuring, Micrometers, Bore Gauges
Salinas, California, United States · On-site
$35/hr–$50/hr
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 …
Skills: Mechanical Assembly, Mechanical Repair, Precision Measuring, Troubleshooting, Google Workspace
Menlo Park, California, United States · Remote OK
$188k–$221k/yr
Job Overview We are seeking a Director, Electrical Strategic Design Sourcing to build and lead the electrical commodity supply chain function. Reporting to the VP of Supply Chain, this role directs a team of commodity ma…
Skills: Strategic Sourcing, Commodity Management, Supply Chain Management, Power Electronics, Battery Sourcing
Menlo Park, California, United States · Remote OK
$27/hr–$31/hr
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 …
Skills: System Monitoring, Troubleshooting, Problem Solving, Technical Aptitude, Communication Skills
Menlo Park, California, United States · Remote OK
$155k–$180k/yr
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 …
Skills: Commercial Contracting, Project Management, Stakeholder Coordination, Contract Negotiation, Cross-functional Leadership
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Acts as the primary quality liaison at a contract manufacturing facility in Monterrey to ensure product quality and test requirements are met. Leads through influence to equip the local quality team in executing inspections, resolving NCRs, and driving root cause corrective actions.
Requires a Bachelor's degree in Engineering and over 5 years of manufacturing quality experience, preferably in industrial or automotive sectors. Must have a strong mechanical background with proven success in transitioning complex assemblies from prototype to volume production.
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:
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.
ResponsibilitiesEnsure 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
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 deliver local power where and when you need it.
Mainspring is a power generator manufacturer redefining how local power is delivered to capacity constrained companies and communities. No other primary power solution can match the flexibility, affordability, and low emissions of a Mainspring Linear Generator. Mainspring customers across key industries — utilities, data centers, enterprise, and industrial — are taking control of their energy futures.
Offices: 3601 Haven Avenue, Menlo Park, CA 94025, US
We deliver local power where and when you need it.
Mainspring is a power generator manufacturer redefining how local power is delivered to capacity constrained companies and communities. No other primary power solution can match the flexibility, affordability, and low emissions of a Mainspring Linear Generator. Mainspring customers across key industries — utilities, data centers, enterprise, and industrial — are taking control of their energy futures.
Offices: 3601 Haven Avenue, Menlo Park, CA 94025, US
