Johan is working as software architect at ASML. He has been working for various demanding companies where rapidly delivering high-quality software was very important. Johan regularly writes articles around Java for InfoQ. He presented 100+ sessions in more than 25 countries at conferences such as JavaOne, GOTO, Devoxx, JavaZone, J-Fall, J-Spring, Jfokus and JavaLand. Johan received the JavaOne Rock Star and Oracle Code One Star awards.