Cell Test Engineer

The role

The Cell Test Engineer will operate and maintain the internal cell test lab. This role involves operating test equipment, writing test protocols, and tracking test status for lithium-metal and solid-state batteries.

What you will do

• Operate the internal cell test lab including loading and unloading cells and setting up fixtures
• Perform routine checks, calibration, and basic maintenance of test equipment
• Troubleshoot issues and coordinate repairs with vendors
• Write test protocols and cycler schedules based on requirements
• Track test status, channel and chamber utilization, and schedules
• Maintain accurate test records and sample tracking
• Ensure test data is uploaded to the cell database
• Follow and help enforce lab safety procedures
• Coordinate with external test labs for UN 38.3 and safety/abuse testing
• Support basic data processing and test summary reports

Required qualifications

• Bachelor's degree in Electrical, Chemical, Mechanical, or Materials Engineering, Chemistry, or a related field
• 0–2 years of experience
• Basic understanding of how lithium batteries work (charge/discharge, capacity, C-rate, SOC)
• Hands-on and detail-oriented
• Strong safety awareness and discipline in following procedures
• Proficient in Excel
• Good communication and teamwork skills
• Fluent in English (written and spoken)

Nice to have

• internship or academic lab experience with batteries or electrochemical testing
• familiarity with battery cyclers (e.g., Neware, Maccor, Arbin) or Python
• basic Chinese communication capability

About the company

Factorial Energy is a U.S.-based solid-state battery company developing next-generation e-mobility platforms. The company is partnered with leaders including Mercedes-Benz, Stellantis, Hyundai, and Kia.