Mariusz Gil is an architect focused on high complexity and high performance web applications. Trainer, consultant, EventStormer and conference speaker. He has been working for several companies on projects for millions of active users, from biggest social network and instant-messaging software to multi-billion PV content personalization and discovery platform. Member of Programme Commitees at IT conferences, event organizer and lecturer at Institute of Computer Science at University of Wroclaw. After hours, biker, rock guitarist and landscape photographer.