Lead Blockchain Developer | Ambrosus
Marek Kirejczyk is a Lead Blockchain Developer at Ambrosus. Marek is an Ethereum enthusiast, the author and maintainer of the ethereum.rb library, co-organiser of Ethereum Meetup Poland and founder of Ethworks and AgileWarsaw. Formerly the Vice President of Engineering at Daftcode, CTO at El Passion, a co-founder of Aenima and C++ developer at Gadu Gadu, he has built and managed teams of up to 60 developers and has worked on blockchain projects since 2013. He started coding at the age of 10 and has complete mastery of several computer languages, including Solidity. He holds an MSc in Computer Science from Warsaw University and is a Certified Scrum Professional.