Alex Papadimoulis - ugly code
 https://www.youtube.com/watch?v=TBLmPdvOPeE

Tim Hemel - Secure software development
 https://www.youtube.com/watch?v=OjVec7hf6ys

Martijn Rutte - Integration with Jenkins
 https://www.youtube.com/watch?v=iYRm85uyFkU

Jan Piet Mens - Ansible
 https://www.youtube.com/watch?v=AQT0TgZv5AQ

Ger Apeldoorn - Puppet
 https://www.youtube.com/watch?v=Q-2UfPn1jy0