Leonidas Kanellopoulos is a senior Flutter developer, digital product builder, and co-founder of SimpleApps, an award-winning mobile app agency based in Greece. With over 10 years in mobile app development—and 5+ years specializing in Flutter—he’s helped bring more than 35 digital products to life, working with clients like Deutsche Telekom and Four Points by Sheraton. Through his work at SimpleApps, Leonidas has helped build apps that have reached over 3 million users around the world.
At SimpleApps, Leonidas leads the creation of mobile and web applications from scratch, focusing on user-centric design and scalable architecture. The team’s work has earned over 13 awards for innovation, recognizing their impact across industries.
He’s also a Google Developer Group Organizer with a focus on Flutter and Firebase, and a Women Techmakers Ambassador, advocating for diversity and inclusion in tech.
Whether he’s leading workshops, writing developer-friendly articles, or mentoring aspiring devs, Leonidas brings clarity, enthusiasm, and real-world experience to the table.
Leonidas Kanellopoulos is a senior Flutter developer, digital product builder, and co-founder of SimpleApps, an award-winning mobile app agency based in Greece. With over 10 years in mobile app development—and 5+ years specializing in Flutter—he’s helped bring more than 35 digital products to life, working with clients like Deutsche Telekom and Four Points by Sheraton. Through his work at SimpleApps, Leonidas has helped build apps that have reached over 3 million users around the world.
At SimpleApps, Leonidas leads the creation of mobile and web applications from scratch, focusing on user-centric design and scalable architecture. The team’s work has earned over 13 awards for innovation, recognizing their impact across industries.
He’s also a Google Developer Group Organizer with a focus on Flutter and Firebase, and a Women Techmakers Ambassador, advocating for diversity and inclusion in tech.
Whether he’s leading workshops, writing developer-friendly articles, or mentoring aspiring devs, Leonidas brings clarity, enthusiasm, and real-world experience to the table.
Tired of messy Flutter projects and spaghetti code? In this fun and practical workshop, you’ll learn how to structure your code and style your apps like a seasoned dev. We’ll cover simple, scalable patterns that take you from zero to hero—no experience in “architecture” needed! Whether you’re just starting out or looking to clean up your current project, you’ll walk away with battle-tested strategies to build apps that are clean, maintainable, and ready to grow.
