Christian Clausen works as a Technical Agile Coach teaching teams how to properly refactor their code. Previously he worked as a software engineer on the Coccinelle semantic patching project, an automated refactoring tool. He has an MSc in computer science and five years’ experience teaching software quality at a university level. He is the author of the book Five Lines of Code published by Manning. Top 3 rated speaker at GOTO Aarhus 2022. People standing in line to get a signed copy of his book "Five Lines of Code".