Stef Zelen knows that students which expect the unexpected become successful professionals. This is his 4th year at University Applied Sciences Inholland The Netherlands. As lecturer he loves to use all technical (ICT) possibilities to develop innovative educational content and raise it to a higher level. Before his carrier as lecturer, he was working as IT-Auditor and frequently asked to speak at conference swithin en outside The Netherlands.

Next to his proffesion as lecturer (team leader) he is boardmember of ISACA Netherlands Chapter; cooperated with "Roadmap Digital Secure Hard- and Software of Dutch Government and wrote a book about “Agile Secure Software”.