Agile programmer, leader, mentor, father. For many years, I have been spreading ideas that allow for quick and effective creation of working software as well as its long-term maintenance. Programming patterns collector, propagator of "it's null until you ship it" claim. Enthusiast of TDD, BDD, DDD, RDD, CQRS, CI / CD etc. From time to time sharing knowledge with others as a trainer or speaker at conferences.