Cell Test Engineering Intern (summer/fall 2026)

Joby Aviation Joby Aviation · Robotics · San Carlos, CA · Powertrain & Electronics

Joby Aviation is seeking a Cell Test Engineering Intern to join their battery team. The intern will conduct research and experiments on batteries, analyze data, and develop methods to characterize physical and electrochemical properties. This role requires knowledge of Li-ion cell chemistry, experience with testing equipment, and proficiency in programming languages like Python or MATLAB.

What you'd actually do

  1. Conduct research and experiments on different batteries using cycling equipment
  2. Occasionally complete cell teardowns for materials investigation
  3. Conduct experiments or measurements for individual cells to characterize physical and electrochemical properties
  4. Develop methods and tools to analyze data sets and communicate the key findings to multidisciplinary teams for product development
  5. Work closely with the following teams:

Skills

Required

  • Passion for cell/battery and EVTOL
  • Pursuing B.S. or above in Electrochemistry, Material Science, Chemical Engineering, or related engineering discipline
  • Heading into junior or senior year of undergraduate degree or above at time of internship
  • Available Summer/Fall 2026
  • Knowledge of Li-ion cell chemistry and mechanisms
  • Experience with testing equipment such as battery cyclers, potentiostats, and electrochemical cells
  • Strong work ethic with an affinity for team-oriented work
  • Strong attention to detail, documentation, and implementation of operating procedures
  • Capable of balancing and prioritizing multiple tasks and projects
  • Capable of prioritizing safe practice in the workplace
  • Python
  • MATLAB

Nice to have

  • Experience with cell teardowns and characterization techniques
  • Glove box or cell fabrication experience
  • Proficient at setting up and writing scripts for battery cycling equipment. (Maccor, Arbin, Neware, etc.)
  • History of experiments to obtain data supporting a BMS and/or performance modeling of a cell level technology
  • Expertise in cell fabrication
  • Experience with large form factor cell/pack handling
  • Research / previous intern experience on Li-ion cell
  • Proficient in relevant programming languages. (Python, MATLAB)

What the JD emphasized

  • Strong attention to detail, documentation, and implementation of operating procedures
  • Strong work ethic with an affinity for team-oriented work
  • Capable of balancing and prioritizing multiple tasks and projects
  • Capable of prioritizing safe practice in the workplace