About the author

Sebastian Grzelak

Sebastian has always been an IT geek. He built his first website in 1999, as soon as he got his first 56kbps Internet connection. Sebastian started his professional career as a web developer, and over time his role evolved to that of a PM. Sebastian is a SCRUM evangelist who holds a Professional Scrum Master certificate. After hours, he eliminates virtual enemies in video games. When not immersed in the virtual world, Sebastian plays squash and is an avid skier – there isn't a season in which he would miss the opportunity to get on a slope.