QA Inspector

Base pay range

$51.15/hr - $59.00/hr

Mainspring Energy is revolutionizing power generation with the adaptive Mainspring Linear Generator—fuel‑flexible, flameless, and near‑zero NOx emissions. Backed by leading investors such as Khosla Ventures and Bill Gates, we supply commercial, industrial, and utility customers with local power solutions for EV charging, data centers, and grid‑scale operations while scaling nationally and internationally.

We are building a fast‑paced Manufacturing Quality Team to ensure product excellence. As a QA Inspector you will draft incoming inspection plans, write, test, and publish CMM inspection programs, and work closely with both R&D and manufacturing to keep quality high while scaling.

• Produce revision‑controlled CMM programs
• Perform conformity inspection on incoming parts for production
• Conduct R&D part inspection and provide reports to Engineering
• Integrate inspection results into data‑analytic tools
• Document non‑conforming records with specific acceptance conditions
• Facilitate the Material Review Board (MRB) for disposition by Design Engineering
• Provide dimensional results for MRB decision making
• Review supplier inspection results and support R&D
• Maintain the inspection area and keep equipment calibrated and certified
• Generate ideas to improve accuracy and precision of dimensional inspection
• Refine the conformance system with Quality Engineering
• Build the Quality team’s reputation by providing facts and evidence to leadership
• Guide less experienced Quality Technicians
• Support internal and external audit

• Minimum 5 years experience as a component QA inspector using CMM equipment in a fast‑paced, high‑growth environment
• Knowledge of manufacturing processes such as CNC, casting, welding, and metal fabrication
• Occasional travel (up to 10%) to contract manufacturers or suppliers

• Proficiency in geometric dimensioning and tolerancing ANSI Y14.5 to interpret manufacturing drawings
• Minimum 6 months experience with Zeiss Calypso software and ability to program part inspection
• Ability to thrive in structured and unstructured environments and make decisive trade‑offs
• Strong understanding of establishing and improving a conformance system
• Experience with digital tools for data collection, analysis, and dashboarding
• Familiarity with ISO 9001 QMS

• Experience in manufacturing scale‑up and transition from prototype to volume production
• Familiarity with IPC‑610 for inspecting electronic products
• Collaboration tool experience (Jira, Slack, Quickbase) with cross‑functional teams
• Knowledge of destructive and non‑destructive testing for special processes such as welding, coating, and heat treatment

Menlo Park, CA (onsite)

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, veteran status, or disability.

We may use artificial intelligence tools to support parts of the hiring process, but final hiring decisions are made by humans.