---
title: 'Engineering Technician, Cell at Stealth-mode Battery Startup'
canonical: 'https://feeny.ai/job/engineering-technician-cell-stealth-mode-battery-startup-san-jose-t9swyaxwsrg5'
type: 'job'
last_seen: '2026-09-10'
---

# Engineering Technician, Cell at Stealth-mode Battery Startup

- **Company:** Stealth-mode Battery Startup
- **Location:** San Jose, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-06-29
- **Last confirmed live:** 2026-09-10
- **Apply:** https://jobs.ashbyhq.com/company/52dd14d6-ad41-46bc-85c0-eb8066d5812f/application

**Skills:** Battery manufacturing, Electronics assembly, Semiconductor manufacturing, Medical device manufacturing, Hand tools, Precision equipment, Basic computer skills, Spreadsheets, Data entry systems, Lithium-ion battery assembly, Fuel cell assembly, Energy storage product assembly, Dry room operations, Cleanroom operations, Controlled manufacturing environments, Reading engineering drawings, Reading assembly instructions, Reading technical documentation, Process improvement, Manufacturing scale-up

> Hands-on Engineering Technician supporting the assembly, testing, and development of next-generation battery cells. The role involves manual assembly, process experimentation, and data collection to scale production from development to commercialization.

## 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 seeking a hands-on Engineering Technician to support the assembly, testing, and development of next-generation battery cells. This role will work closely with engineers and scientists to build prototype and pilot-scale cells, execute manufacturing processes, collect data, and help scale production from development into commercialization. Unlike large-scale automated manufacturing environments, this position involves significant manual assembly, process experimentation, and problem-solving. The ideal candidate enjoys working with their hands, follows detailed procedures, and is excited about contributing to the growth of a rapidly evolving battery technology company.

## Responsibilities

- Assemble battery cells and related components according to engineering specifications, work instructions, and quality standards.
- Perform battery cell assembly processes including electrode preparation, stacking, winding, tabbing, sealing, electrolyte filling, and formation activities.
- Operate laboratory, pilot-line, and production equipment used in battery cell manufacturing.
- Conduct in-process inspections and quality checks to ensure cells meet performance and reliability requirements.
- Record manufacturing data, process parameters, and observations accurately.
- Support engineers with prototype builds, process development activities, and manufacturing trials.
- Troubleshoot assembly, equipment, and process issues and communicate findings to engineering and operations teams.
- Maintain clean, organized, and safe workspaces, including dry room and controlled-environment areas.
- Prepare materials, consumables, and tooling needed for daily production and development activities.
- Assist with inventory tracking, material handling, and production readiness activities.
- Follow all safety, environmental, and quality procedures.
- Contribute to continuous improvement efforts to enhance yield, quality, and manufacturing efficiency.

## Qualifications

- High school diploma or GED required.
- 3+ years of experience in manufacturing, assembly, laboratory operations, battery manufacturing, electronics assembly, semiconductor manufacturing, medical device manufacturing, or a related technical environment.
- Demonstrated mechanical aptitude and ability to work with hand tools and precision equipment.
- Basic computer skills and familiarity with production records, spreadsheets, or data entry systems.
- Takes ownership of responsibilities and delivers work with a high degree of precision and quality.

## Preferred Qualifications

- Experience assembling lithium-ion batteries, battery cells, fuel cells, or other energy storage products.
- Familiarity with dry room, cleanroom, or controlled manufacturing environments.
- Ability to read engineering drawings, assembly instructions, and technical documentation.
- Degree or technical certification in manufacturing technology, engineering technology, electronics, chemistry, or a related field.
- Experience participating in process improvement or manufacturing scale-up efforts.

Physical Requirements

- Ability to sit, stand, and perform repetitive assembly tasks for extended periods.
- Ability to lift up to 50 pounds with or without reasonable accommodation.
- Ability to perform fine motor tasks requiring dexterity and precision.
- Ability to wear required PPE and work in dry room or controlled-environment conditions.

Why Join Us?

- Be part of a team developing next-generation battery technology.
- Work directly with engineers and scientists to bring innovative products to market.
- Gain exposure to battery development, manufacturing scale-up, and commercialization.
- Make a meaningful impact in a growing, mission-driven company.
- Enjoy opportunities for professional growth and career advancement.

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
- [Quality Control Technician](https://feeny.ai/job/quality-control-technician-stealth-mode-battery-startup-san-jose-23bxe0knfah6) — 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
- [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