Definitely! I studied pedagogy at a German university but got into programming and really liked it. I took a vocational course for a CS bachelor's degree here in Germany but even before I finished I got a good job as a software developer in a medium sized company.

From my experience you don't need a university degree to get a decent programming job if you have some patience and can demonstrate that you're passionate about it (which your cs certificates clearly communicate).

If you want a formal education, I can recommend http://www.oncampus.de/medieninformatik.html

Feel free to send me an email (qgi at offliners dot com) if you want to hear more about this.