Lasse Schuirmann (22) is a freelance software developer who cares passionately about open source, collaboratively developed software. After he was awarded the Google Summer of Code scholarship at GNOME, he began mentoring several students while administering the GSoC program for the GNOME organization. Currently, he spends most of his time maintaining and developing his open source project coala to help developers improving their code quality without hassle. The coala project group has more than 200 contributors and is present at conferences all around the world. In his spare time, Lasse forges high quality (mostly python and FLOSS) software and conducts workshops for clients of his company Viper Development (viperdev.io), pursues a master degree in Computer Science, develops GitMate (gitmate.io), a hand crafted piece of software that supports developers during their whole workflow, and talks and performs workshops at conferences around the globe.