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Quality Control Technician

Stealth-mode Battery Startup
Posted a month ago, valid for 10 days
Location

San Jose, CA 95103, US

Salary

$120,000 - $144,000 per year

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Contract type

Full Time

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Sonic Summary

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  • We are a stealth-mode battery startup focused on revolutionizing battery technology for clean energy.
  • The role of Senior Quality Technician requires strong experience in Incoming, In-Process, and Outgoing Quality Control within a manufacturing or R&D environment.
  • Candidates should have hands-on root cause analysis skills and a high attention to detail.
  • The position offers growth opportunities toward roles such as Quality Engineer or Supplier Quality Engineer.
  • The salary for this position is competitive, and a minimum of 5 years of relevant experience is required.

About the Company

We are a stealth-mode battery startup developing cutting-edge battery technology. Our mission is to revolutionize battery technology to accelerate the global transition to clean energy. By leveraging innovative materials, advanced manufacturing techniques, and next-generation energy storage architectures, we are building the future of sustainable energy.

Can’t find the company name? It’s not you, it’s us! We’re really excited about the potential of our technology, product, and mission, and have chosen to remain in stealth mode. If the job description piques your interest, please apply. If your skillset is aligned with what we’re looking for, the team will reach out to schedule your interview and tell you a bit more about us (ie. who we are).

About the Role

We are looking for an experienced Senior Quality Technician to support Incoming, In-Process,
and Outgoing Quality Control (IQC, IPQC, OQC) and play a key role in root cause analysis and
continuous improvement as we scale our battery R&D and manufacturing operations.
This is a hands-on role for someone who enjoys being close to the product, solving real
problems, and helping build practical quality systems that support fast-paced innovation.

Key Responsibilities

Incoming Quality Control (IQC)

  • Perform and lead receiving inspections for incoming materials and components

  • Review Certificates of Analysis (COAs), lot traceability, and supplier documentation

  • Identify, document, and quarantine nonconforming incoming material

  • Support material qualification, change-based inspections, and supplier issue investigations

  • Improve and standardize IQC procedures, checklists, and acceptance criteria

In-Process Quality Control (IPQC)

  • Perform in-process inspections to verify critical process and quality parameters

  • Monitor adherence to process controls and work instructions

  • Identify process deviations and escalate issues in real time

  • Support root cause analysis for in-process defects and yield losses

  • Work with Manufacturing and R&D teams to implement corrective actions

Outgoing Quality Control (OQC)

  • Perform final inspections on finished cells, components, or assemblies prior to release

  • Verify compliance to defined specifications and release criteria

  • Ensure proper documentation, labeling, and traceability prior to shipment or internal
    release

  • Support disposition decisions for nonconforming finished goods

  • Problem Solving & Continuous Improvement

  • Lead first-level root cause analysis (RCA) using tools such as 5-Why, Fishbone (4M), and
    data review

  • Support corrective and preventive actions (CAPA) and verify effectiveness

  • Track recurring quality issues and recommend preventive improvements

  • Collaborate cross-functionally with Quality Engineering, R&D, Manufacturing, and Supply
    Chain

Qualifications

  • Strong experience in IQC, IPQC, and/or OQC within a manufacturing or R&D environment

  • Demonstrated hands-on root cause analysis and problem-solving capability

  • Comfortable working in lab, dry room, or production environments

  • High attention to detail with strong documentation and communication skills

  • Experience in battery, electrochemical, materials, or hardware manufacturing is a plus

Growth Opportunities

This role offers clear growth opportunities, including:

  • Expanded ownership of quality system development across IQC, IPQC, and OQC

  • Increased leadership in cross-functional RCA, CAPA, and process improvement efforts

  • Deeper involvement in supplier quality and manufacturing readiness

  • Career progression toward Quality Engineer, Supplier Quality Engineer, or Quality Systems

We are an equal opportunity employer and we do not discriminate on the basis of race, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition, or any other basis protected by law.




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