Jonas has been with HENNGE for over seven years, switching from Django developer to working with asynchronous Python web frameworks like Tornado and FastAPI.

A PyCon JP Association board member and Python Software Foundation Community Service Award recipient, Jonas is a seasoned conference speaker. He is passionate about creating events that can benefit others as much as they have for him. Outside of conferences, you’ll find him enjoying a game of Dungeons and Dragons.

A graduate of University of Washington, Bothwell, Charles has been working in the Android space since 2010 and has worked on mobile apps for Bluefire Productions, McGraw Hill and METAPS.

He now maintains four different Android and iOS apps for HENNGE’s Product Development Division. Passionate about improving the quality of mobile apps, he is always researching the latest Apple and Google libraries and working to bring legacy apps up to date with the Compose and SwiftUI frameworks.