A monthly event in Ebisu where 50-100 developers congregate to work on whatever projects they want. There is a great mix of socializing and helping each other in and overall productive atmosphere. Skillfully put together by Caven and others.
A monthly socializing event that has been going on since 2012 (?) which has put together a strong community along the way. Ran by Jay and Paul, the fantastic duo behind Make Leaps, this is a welcoming and comfortable event to meet others in the scene.
Large engineering presentations held at the Mercari offices covering topics like backend architecture, machine learning, and search engineering.