My interest in computers started when I was about 10 years old, when I saw a friend typing in hexadecimal codes on a home computer which impressed me so much that I still remember it. I got my own Commodore 64 when I was 13 on which I started programming in BASIC and assembly language and I have been a computer wizard ever since.
After studying electrical engineering at the Delft Technical University (in The Netherlands), I started my career as a software developer. I have been working with Java since 2000. I have done (and am doing) projects for many different clients using Java, from large Swing applications and web applications to enterprise middleware systems.
I am SCJP and SCWCD certified since 2001 and 2002 respectively.
I've started working as an independent software developer at the beginning of 2009. See http://www.jdj-it.com (in Dutch).