Björn Jensen studied Computer Science at the University of Applied Sciences of Hamburg, Germany and holds a degree in Computer Sciences. He started to work in the IT-Business as a Software Developer in 2000. Since then he has gained a lot of experience in different positions inside the software development process like tester, build manager, release manager, configuration manager, project lead and head of development. The size of companies he works for varies from very small scale to very large scale (and strongly distributed). He is founder and leader of the Java User Group Hamburg (JUGHH) and the Android User Group Hamburg. He is also a founding member of the JetBrains Academy of Development. Since his first contact with agile in practice (XP) in the year 2001 he dives deep into agile and introduces agile engineering practices and scrum successfully to several companies. Meanwhile he has also become Certified Scrum Trainer (CST) as well as a member of the Trainer Approval Committee of the Scrum Alliance.