The "IoT Microcontroller Developer" qualification has been designed for professionals and technicians of Small and Medium Enterprises that intend to develop and manage IoT projects based on microcontrollers. The training course, after a review of IoT technologies and business models, provides a focus on IoT devices, sensors, architectures and platforms related to microcontrollers, providing examples of IoT applications based on microcontroller. Then, the course focuses on the programming of microcontrollers, concluding with topics of networking and security.