Kevlin is an independent consultant, speaker, writer and trainer. His work with companies is focused on code, design, practices and people. Kevlin is a contributor to the Modern Software Engineering YouTube channel. He has also contributed to open- and closed-source codebases, been a columnist for a number of magazines and sites and has been on far too many committees. He is co-author of A Pattern Language for Distributed Computing and On Patterns and Pattern Languages. He is also editor of 97 Things Every Programmer Should Know and co-editor of 97 Things Every Java Programmer Should Know. He lives in Bristol and online.