Understanding the significance of a well-rounded educational app, I am your ideal fit for this project. As an experienced Flutter developer, my knowledge of Dart and Flutter SDK along with Android, iOS, and Web development proficiency enables me to create cross-platform mobile magic. Notably, my clean software architecture skills (MVC, BLOC, MVVM) are perfect for comprehensive app development like the one you described. My portfolio proudly showcases published apps on Play Store that portray my penchant for creating user-friendly, multimedia-rich platforms.
My encompassing skill set doesn't stop at the front end; I'm equally proficient in the backend. My expertise in databases- PostgreSQL, MySQL, Firebase, MongoDB and backends such as Django and NodeJs will greatly in developing your desired backend system that allows easy updates of PDF documents - thus making it a hassle-free process.
Lastly but most significantly, I understand the paramount importance of secure and reliable user authentication systems, especially in an app designed for younger audiences. With hands-on experience in implementing them via SMS verification methods over a mobile number sign-up system using Firebase or similar technologies, I assure you that security is something you wouldn’t have to worry about when working with me.