Kevlin is an independent consultant, trainer, speaker and writer. His development interests and work with companies covers programming, practice and people. He is a contributor to the Modern Software Engineering YouTube channel and has written for many publications, including The Register and the O’Reilly Radar. Kevlin is also co-author of two volumes in the Pattern-Oriented Software Architecture series, editor of 97 Things Every Programmer Should Know and co-editor of 97 Things Every Java Programmer Should Know.