Operating systems

• UNIX (Solaris 9/10, openSolaris, Linux [SuSE, Ubuntu])
• Windows 2000/XP

Programming languages

• Java (Servlets, JSP, EJB, JPA, JTA, TagLibs, Pattern)
  SCJP, SCWCD and SCBCD
• C/C++ (basics)
• Perl, shell programming (korn, bash, bourne)
• SQL, 4GL
• and: XML, Javascript, ...

Software development

• eclipse (europa, ganymed)
• NetBeans 6.x
• repository (cvs, subversion, server and client)
• deployment (ant)

Administration

• application server (tomcat, glassfish, jboss, orion)
• web server (apache), deployment with ant
• heterogenous networks (Unix [Solaris, Linux], Windows)
• dns, sendmail
• data recovery, monitoring
• virtualisation (XEN, vmware, virtualbox)

Databases

• Oracle 8i, 10g
• MySql 5
• Derby

Congress visits

• 1998 Java ONE, Berlin
• 1999 JIT99, Düsseldorf
• 2000 NetObjectDays, Erfurt
• 2001 JAX2001, Frankfurt
• 2002 JAX2002, Frankfurt, participation
  power workshop EJB 2.0
• 2003 JAX2003, Frankfurt, participation
  power workshop unit testing
• 2005 JAX2005, Frankfurt, participation
  power workshop agile programming
• 2007 JAX2007, Wiesbaden
• LinuxTag 2007, Berlin
• LinuxTag 2008, Berlin