Battery Manufacturing Engineer – Robotics, Equity

1X; San Carlos (CA); On-site; USD 126,000 - 181,000; Full time

Benefits offered by this job

Medical, dental, vision coverage

Paid time off & holidays

401(k) with company match

FSA/HSA options

Commuter benefits

Disability & life insurance

EAP for mental health & support

Onsite snacks and catered lunches

Job summary

1X is building humanoid robots for home use, and the Battery team owns energy storage and power delivery for NEO. You will design, prototype, validate, and productionize battery solutions that meet demanding weight, space, safety, and lifecycle requirements in a real-world robot.

You will work with cells, modules, packs, test systems, and robots, applying data from lab tests and real-world operation to improve performance, lifetime, and manufacturability.

Qualifications

• Bachelor’s degree in Mechanical Engineering, Electrical Engineering, Chemical Engineering, Materials Science, or related field.
• 5+ years of engineering experience developing battery systems, energy storage systems, or complex electromechanical products.
• Experience developing fixtures and test equipment.
• Experience developing lithium-ion battery packs, modules, cells, or related energy storage systems.
• Strong understanding of lithium-ion cell performance, charging and discharging behavior, degradation, thermal behavior, and safety.
• Experience with battery pack architecture and integration, including cells, interconnects, sensing, protection, thermal management, and mechanical packaging.
• Experience defining and executing battery characterization and validation testing.
• Experience analyzing battery performance data and using test results to drive engineering decisions.
• Experience with battery safety, fault analysis, failure modes, and design mitigation strategies.
• Experience supporting hardware from prototype development through design validation and production.
• Experience collaborating with electrical, mechanical, embedded software, manufacturing, quality, reliability, and supply chain organizations

Responsibilities

• Build and release production-ready battery systems that meet energy, power, weight, volume, thermal, safety, reliability, cost, and manufacturability requirements.
• Develop battery pack architectures integrating cells, busbars, interconnects, sensing, protection, BMS hardware, thermal management, enclosures, and structural interfaces.
• Define and validate cell and pack performance requirements across charge, discharge, peak power, temperature, aging, and real-world robot duty cycles.
• Improve battery energy density, power capability, thermal performance, cycle life, reliability, and serviceability through iterative engineering and testing.
• Develop characterization and validation methods for cells, modules, packs, charging systems, and battery safety.
• Identify battery failure modes through testing and data analysis and drive design improvements and corrective actions.
• Support battery hardware through prototype builds, design validation, NPI, supplier qualification, and production ramp.
• Partner closely with Electrical, Embedded Software, Mechanical, Controls, Reliability, Manufacturing, and Supply Chain teams to deliver fully integrated energy systems

Skills

Battery engineering

Test fixture design

Lithium-ion cell behavior

Battery pack architecture

Data analysis

Cross-functional collaboration

Prototyping and validation

Safety and risk mitigation

Education

Bachelor’s degree in Mechanical, Electrical, Chemical Engineering, Materials Science or related

Job description

1X is building humanoid robots for home use, and the Battery team owns energy storage and power delivery for NEO. You will design, prototype, validate, and productionize battery solutions that meet demanding weight, space, safety, and lifecycle requirements in a real-world robot.

You will work with cells, modules, packs, test systems, and robots, applying data from lab tests and real-world operation to improve performance, lifetime, and manufacturability.