Sander is an independent dad, mentor, trainer, software architect, programmer, speaker, and writer. He is a highly appreciated catalyst in the innovation of software development at his many international clients. Well known as the author of the best-selling book This Is Agile, Sander coaches organizations, projects and teams, has written books on UML and agile, and published over 250 articles in international magazines. He is an inspiring (keynote) speaker at many international conferences, and presents seminars and training courses around the world on a variety of topics such as (beyond) agile, Scrum, Kanban, continuous delivery, software estimation, software architecture, microservices, design patterns, modeling and UML, writing code, and testing.