As a former Director of DSL development at Apiary, Zdenek is the author of the API Blueprint description language, which is now used by over 200,000 developers and architects to describe well over 300,000 APIs worldwide. He is a co-author of the data modeling language MSON. Zdenek defined and evangelized API design and the agile API workflow. He advises several Fortune 500 companies with their API design and implementation processes, and has experience in growing and mentoring start-up companies.