1X Technologies

Battery Test Engineer

San Carlos, CA

Sponsorship not specified$106k-$146kDetected 35 days ago

AlgorithmsRobotics

About the role

Battery performance directly impacts robot capability, runtime, reliability, and user experience.
Your work will provide the foundation for battery algorithms, hardware validation, fleet analysis, and long-term reliability improvements.
As a Battery Test Engineer, you will play a critical role in understanding how batteries behave in the real world and ensuring our energy systems meet the demands of humanoid robotics.

We're building humanoid robots that work in home - doing the chores, handling the tasks, and giving people their time back.
NEO is our flagship - a home robot designed to move, learn, and operate in the real world alongside real people.
We're scaling, we're hiring with intention, and we need people who want to build something that will genuinely change how humans spend their time - safely creating abundance for all.
From cell characterization and battery management algorithms to pack design and system-level energy optimization, the team is responsible for delivering safe, reliable, and high-performance energy systems for humanoid robotics.
You will design and execute battery testing programs that characterize cells, modules, packs, and complete robotic battery systems under realistic operating conditions.
Develop and execute battery test campaigns that generate high-quality data for performance, aging, safety, and reliability analysis
Support validation of battery management systems, including SoC, SoH, fault detection, and protection strategies

2+ years of experience in battery testing, validation, reliability engineering, or a related field

Experience testing batteries for robotics, automotive, aerospace, industrial equipment, or other high-reliability systems
Familiarity with battery management systems (BMS), SoC/SoH estimation, and battery algorithms
Familiarity with battery safety and certification standards such as UN38.3, IEC 62133, UL, or ISO 26262
Experience with environmental, thermal, vibration, abuse, or durability testing
Experience analyzing field data and supporting fleet-level reliability investigations
Excellent troubleshooting and root-cause analysis skills

Comprehensive medical, dental, and vision coverage
Generous paid time off, company holidays, and parental leave
Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA) options
Commuter benefits (transit and parking)
Short-term and long-term disability, and life insurance
Employee Assistance Program (EAP) for mental health, financial, and personal support

Create robotic duty-cycle test profiles that accurately represent real-world operating conditions, including transient loads, regenerative events, and continuous operation
Identify battery degradation mechanisms, failure modes, and performance limitations through structured testing and analysis
Deliver actionable insights and recommendations that improve battery design, algorithms, safety, and field performance
Strong understanding of lithium-ion battery behavior, degradation mechanisms, and safety considerations
Hands-on laboratory experience with battery testing equipment and experimental validation methods
Strong analytical mindset with the ability to extract meaningful insights from large datasets
Strong communication and documentation skills that support cross-functional engineering collaboration
We've been at this since 2014 and we're at the point where the hard problems are behind us and the hard work is in front of us.

1X is an Equal Opportunity Employer.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, ancestry, citizenship, age, marital status, medical condition, genetic information, disability, military or veteran status, justice system impact, or any other characteristic protected under applicable federal, state, or local law.

rd to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, ancestry, citizenship, age, marital status, medical condition, genetic information, disability, military or ve

This listing is sourced directly from 1X Technologies's careers page and normalized into a canonical job model.