Sebastian Bergmann has believed in Open Source from day one. He has a university degree in computer science, and has created the industry-leading testing tool PHPUnit, which has played a vital role in professionalizing software development with PHP. He shares his comprehensive experiences in publications and at conferences. As Co-Founder and Principal Consultant of The PHP Consulting Company (thePHP.cc), Sebastian helps his clients to develop software successfully. In his free time, he works on PHPUnit, likes board games, and really enjoys making fancy ice cream.