An Arduino developer designs, prototypes, and creates interactive electronic objects or environments using Arduino boards. They write code using the Arduino programming language, based on C/C++, to control hardware like sensors, motors, or lights. They troubleshoot and debug software and hardware issues. They also collaborate with other team members to integrate individual components into a larger system. Arduino developers often work on projects in robotics, home automation, or interactive art. They need a strong understanding of electronics and microcontrollers, as well as problem-solving skills and creativity. They also document their work to enable replication or further development.