Battery Test Engineer - Robotics
About The Position
1X is building humanoid robots for home use, aiming to automate chores and tasks to give people more free time. This involves solving complex challenges in robotics, AI, and manufacturing simultaneously, at scale, and in a safe form factor for home environments. The company has been developing these robots since 2014 and is now focused on shipping its flagship product, NEO, a home robot designed for real-world operation alongside people. 1X is seeking individuals inspired by this mission who want to see their work have a tangible impact on the world and change how humans spend their time. The Energy Systems Engineering team is responsible for developing the battery systems that power NEO. This includes cell characterization, battery management algorithms, pack design, and overall energy system optimization to ensure safety, reliability, and high performance. Battery performance is crucial for robot capability, runtime, reliability, and user experience. The team collaborates closely with various engineering disciplines, including hardware, firmware, controls, robotics, and fleet operations, to ensure the battery systems function safely and predictably under demanding real-world conditions.
Requirements
- BS or MS in Electrical Engineering, Mechanical Engineering, Energy Systems, or a related field
- 2+ years of experience in battery testing, validation, reliability engineering, or a related field
- Hands-on experience working with lithium-ion cells, modules, or battery packs
- Experience operating battery cyclers, environmental chambers, and laboratory test equipment
- Experience analyzing test data using Python, MATLAB, or similar technical computing tools
- Comfortable working in laboratory environments and following rigorous safety procedures
- 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
- Excellent troubleshooting and root-cause analysis skills
- Strong communication and documentation skills that support cross-functional engineering collaboration
Nice To Haves
- 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
- Experience developing automated test systems and scripting test workflows
- 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
Responsibilities
- Design and execute battery testing programs to 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.
- 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.
- Support validation of battery management systems, including SoC, SoH, fault detection, and protection strategies.
- Deliver actionable insights and recommendations that improve battery design, algorithms, safety, and field performance.
Benefits
- Comprehensive medical, dental, and vision coverage
- Generous paid time off, company holidays, and parental leave
- 401(k) plan with company match (100% on the first 3% of contributions, 50% on the next 2%)
- 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
- Onsite snacks and catered lunches
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
Associate degree
