Alexey Krivitsky has been a developer, scrum master, conference producer, and speaker. He has written several books and is the inventor of lego4scrum. He is a Certified Scrum Trainer (CST) and works as an organization agility coach.
Alexey is known in the industry because of the success of lego4scrum that he invented.
He has been using Scrum since 2005, he is probably the first Scrum master of Ukraine. In 2007, together with a group of 'interested', he acted as the inspirer of the Agile Ukraine community. So in Ukraine they began to talk about flexible development. It all started with a Google group. Then a dozen half-day free conferences throughout Ukraine. The wave went rolling.
Since 2008, he has been actively appearing in the arena of the Agile community as a conference producer and speaker. Since the same year - an independent agile consultant, perhaps also the first in Ukraine.

Roland Flemm (PST) became a Scrum Master in 2009 closing his 20-year career as a developer and infrastructure specialist. Roland grew into international agile consulting with a focus on large scaled Scrum adoptions since 2015. He has been actively appearing in the Agile community as a conference speaker.
He started in 1984 as a Cobol and Ideal/Datacom developer. In 2001 he moved to the support and maintenance field and worked with mostly IBM Application Server products.
In 2009 he switched to a new career in Scrum and Agile. He is now a proud member of the 350 globally certified Professional Scrum Trainers for scrum.org. His main focus is Agile organization design coaching and he supports agile adoptions in various industries. The core of his approach is to put people first, learn by doing and innovate with common sense.