---
title: 'Engineering Technician - Battery Test at Stealth-mode Battery Startup'
canonical: 'https://feeny.ai/job/engineering-technician-battery-test-stealth-mode-battery-startup-san-jose-9ttrfnd5rrh9'
type: 'job'
last_seen: '2026-09-10'
---

# Engineering Technician - Battery Test at Stealth-mode Battery Startup

- **Company:** Stealth-mode Battery Startup
- **Location:** San Jose, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-03
- **Last confirmed live:** 2026-09-10
- **Apply:** https://jobs.ashbyhq.com/company/d582cddc-d846-4ede-9a5e-d277c4cea3fc

## 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 Engineering Technician - Battery Test to support the execution of lithium-ion battery testing across the cell, module, and high-voltage (HV) pack levels. This role is highly hands-on and focused on building, operating, maintaining, and troubleshooting battery test systems while working closely with test engineers and cross-functional engineering teams.

This is a role for you if you enjoy working in a laboratory environment, have strong mechanical and electrical aptitude, and take pride in building reliable test setups and producing high-quality test data. Previous experience with lithium-ion battery testing is preferred, while high-voltage battery experience is a plus but not required.

## Responsibilities

Battery Test Execution

- Build, install, and operate battery test setups under the guidance of test engineers.
- Prepare and test lithium-ion cells, modules, and high-voltage battery packs.
- Safely install and connect battery hardware, instrumentation, and support equipment.
- Execute battery tests including: Performance characterization, Cycle life and aging, Rate capability, Power and resistance testing, Environmental and thermal testing, Validation and durability testing
- Monitor active tests and respond appropriately to alarms, faults, or abnormal test behavior.
- Maintain detailed test logs and document observations throughout testing.

Test Equipment & Lab Support

- Configure and operate battery cyclers (Maccor, AVL, Neware, or similar systems).
- Assemble test fixtures, wiring harnesses, instrumentation, and support hardware.
- Install thermocouples, voltage taps, current sensors, pressure sensors, and other instrumentation.
- Operate environmental chambers and supporting laboratory equipment.
- Perform routine calibration, maintenance, and troubleshooting of laboratory equipment.
- Help maintain an organized, safe, and efficient battery laboratory.

High Voltage & Lab Safety

- Follow laboratory safety procedures for battery testing, including HV safety practices where applicable.
- Verify proper test setup before energizing battery systems.
- Perform pre-test inspections and equipment checks.
- Support continuous improvement of laboratory safety procedures and best practices.

Data Collection & Documentation

- Verify accurate data acquisition from battery cyclers, DAQ systems, and instrumentation.
- Organize and archive test data.
- Assist engineers with basic data review and reporting.
- Record hardware configurations, serial numbers, and test conditions.
- Help develop and improve laboratory work instructions and test procedures.

Troubleshooting

- Diagnose electrical, mechanical, and instrumentation issues with test setups.
- Replace damaged cables, connectors, sensors, and fixtures as needed.
- Assist engineers with failure investigations and root cause analysis.
- Help improve test reliability, repeatability, and laboratory efficiency.

Cross-Functional Support

- Work closely with battery test, systems, electrical, mechanical, manufacturing, and BMS engineering teams.
- Support prototype builds and engineering development activities.
- Assist with assembly, disassembly, inspection, and teardown of cells, modules, and battery packs before and after testing.

## Qualifications

- Associate's degree, technical certification, military technical experience, or equivalent hands-on experience in electrical, mechanical, automotive, or related fields.
- Strong mechanical and electrical aptitude.
- Experience using common laboratory tools and equipment (multimeters, oscilloscopes, power supplies, hand tools, crimpers, etc.).
- Ability to read electrical schematics and mechanical drawings.
- Strong attention to detail and commitment to safety.
- Comfortable working in a hands-on laboratory environment.
- Ability to lift up to 50 lb and work around laboratory equipment and battery systems.

## Preferred Qualifications

- Experience testing lithium-ion cells, modules, or battery packs.
- Experience operating battery cyclers (Maccor, AVL, Neware, or similar).
- High-voltage battery experience or HV safety training.
- Familiarity with CAN communication and basic BMS operation.
- Experience with thermal chambers, DAQ systems, or environmental testing.
- Basic experience with MATLAB, Python, Excel, or similar tools for reviewing test data.
- Experience in automotive, EV, aerospace, energy storage, or battery manufacturing environments.

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?

- 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

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- [Global Supply Manager](https://feeny.ai/job/global-supply-manager-stealth-mode-battery-startup-san-jose-snwe21g2fbjr) — San Jose, CA
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