---
title: 'Quality Control Technician at Stealth-mode Battery Startup'
canonical: 'https://feeny.ai/job/quality-control-technician-stealth-mode-battery-startup-san-jose-23bxe0knfah6'
type: 'job'
last_seen: '2026-09-10'
---

# Quality Control Technician at Stealth-mode Battery Startup

- **Company:** Stealth-mode Battery Startup
- **Location:** San Jose, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-05
- **Last confirmed live:** 2026-09-10
- **Apply:** https://jobs.ashbyhq.com/company/89f537ad-4602-46fb-b6c7-361b57c8c185

## Job description

## 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 and advanced manufacturing techniques, 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 (e.g. who we are).

## Role

We are looking for an experienced 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.

## 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

- 3+ years of 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

Why Join Us?

- Innovative Technology: Work on cutting-edge energy storage solutions that power the future.
- Career Growth: Opportunities to work on high-impact projects and advance in a growing industry.
- Competitive Benefits: Comprehensive health, wellness, and professional development programs.
- Mission-Driven Culture: Be part of a team that is shaping the future of sustainable energy through innovation and excellence.

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.

## About Stealth-mode Battery Startup

## Company Overview
- **One-liner**: A stealth-mode startup developing next-generation battery technology to accelerate the global transition to clean energy.
- **Entity Type**: Private (Stealth-mode startup)
- **Headquarters**: San Francisco Bay Area, California, United States
- **Founded**: Not publicly available
- **Founders**: Not publicly available

## Core Business
- Primary industry/industries: Battery Manufacturing, Energy Technology, Clean Energy
- Target customers: B2B (likely automotive, energy storage, or consumer electronics manufacturers)
- Mission or purpose statement: "Revolutionize battery technology to accelerate the global transition to clean energy."

## Market Standing
- **Valuation**: Not publicly available (stealth-mode startup)
- **Key Metric**: Total Funding — Not disclosed; company is currently hiring for multiple roles, suggesting active fundraising or prior funding.
- **Notable Investors/Partners**: Not publicly available
- **Growth Signals**: The company is actively hiring across engineering, project management, and IT roles. Job postings have appeared regularly in recent months. LinkedIn followers have grown at +3.4% monthly, indicating growing interest.

## Competitive Advantages
- **Stealth Mode as a Moat**: By operating in stealth, the company can protect proprietary technology, manufacturing processes, and material science breakthroughs from competitors during critical R&D stages.
- **Advanced Manufacturing Focus**: Emphasis on "advanced manufacturing techniques" and "next-generation energy storage architectures" suggests a manufacturing-centric approach that is harder to replicate than purely chemical innovations.
- **Talent Pipeline from Tesla**: LinkedIn data shows talent sources include Tesla, indicating potential knowledge transfer from the leading EV battery manufacturer.

## Strategic Focus
- **Building the Engineering & Operations Team**: Current hiring priorities focus heavily on engineering, program management, and operations — roles critical to scaling from R&D to pilot production.
- **Manufacturing Readiness**: Job descriptions emphasize procurement, vendor coordination, logistics, and equipment delivery — suggesting the company is moving toward prototype or pilot manufacturing scale.
- **San Jose Operations**: Listing roles in San Jose points to establishing physical lab and manufacturing facilities in a key clean-tech hub.

## Why Work Here
- **Mission-Driven**: Direct impact on clean energy transition and climate change through battery innovation.
- **Early-Stage Equity Potential**: As a stealth startup, early employees likely receive significant equity upside.
- **Compensation**: Competitive base salaries — for example, the Engineering Project Specialist role lists a base salary range of $145,000–$190,000.
- **Hands-On Ownership**: Job descriptions emphasize real ownership and cross-functional collaboration — not just supporting roles.
- **Growth Opportunity**: Roles are designed to scale with the company, offering clear career progression from operations into broader procurement, vendor management, and supply chain leadership.
- **On-Site Culture**: All roles are on-site (San Jose/San Francisco Bay Area), suggesting a collaborative, lab-intensive environment typical of hardware startups.
- **Tech Stack Exposure**: Current tech stack includes tools like Rippling, Python, Jira, SolidWorks, CATIA, Altium, ANSYS, and Linux — indicating a sophisticated engineering environment.
- **Equal Opportunity Employer**: Company explicitly states equal opportunity employment practices.

## Sources
1. [batterystartup.careers](https://www.batterystartup.careers/)
2. [LinkedIn - Stealth Battery Startup](https://www.linkedin.com/company/stealth-battery-startup)
3. [Rise Open Jobs - Engineering Project Specialist](https://joinrise.co/stealth-mode-battery-startup/engineering-project-specialist-eps-t4hp)
4. [Jobsearcher - Stealth Battery Startup](https://jobsearcher.com/companies/stealth-battery-startup)
5. [Ashby - Stealth-mode Battery Startup Careers](https://jobs.ashbyhq.com/company)

## Other roles at Stealth-mode Battery Startup

- [OT Engineer](https://feeny.ai/job/ot-engineer-stealth-mode-battery-startup-san-jose-283exp9y5m0n) — San Jose, CA
- [Capital Projects Program Manager](https://feeny.ai/job/capital-projects-program-manager-stealth-mode-battery-startup-san-jose-4p3j6wvqxbzp) — San Jose, CA
- [Global Supply Manager](https://feeny.ai/job/global-supply-manager-stealth-mode-battery-startup-san-jose-snwe21g2fbjr) — San Jose, CA
- [Engineering Technician - Battery Test](https://feeny.ai/job/engineering-technician-battery-test-stealth-mode-battery-startup-san-jose-9ttrfnd5rrh9) — San Jose, CA
- [Facilities Engineering Specialist](https://feeny.ai/job/facilities-engineering-specialist-stealth-mode-battery-startup-fremont-5j7eq94fh4t5) — Fremont, CA
- [Junior Product Design Engineer](https://feeny.ai/job/junior-product-design-engineer-stealth-mode-battery-startup-san-jose-w90m818snnpr) — San Jose, CA
- [Engineering Technician, Cell](https://feeny.ai/job/engineering-technician-cell-stealth-mode-battery-startup-san-jose-t9swyaxwsrg5) — San Jose, CA
- [Equipment Engineer, Manufacturing](https://feeny.ai/job/equipment-engineer-manufacturing-stealth-mode-battery-startup-san-jose-68dyfjf7bwym) — San Jose, CA
- [Equipment Technician, Manufacturing](https://feeny.ai/job/equipment-technician-manufacturing-stealth-mode-battery-startup-san-jose-91e6s81ft4hd) — San Jose, CA
- [Manufacturing Operations Manager](https://feeny.ai/job/manufacturing-operations-manager-stealth-mode-battery-startup-san-jose-4kd1mpk9z6tg) — San Jose, CA