Languages & DBs:

• Java 1.0.2 - 1.6, J2EE, JNI, RMI, Swing, EJB, JDBC, JAXP, JDOM, Servlet API, JSP, Struts, Tiles, AXIS (Soap), Tomcat 4/5/6, JBoss 3/4/5, BEA WebLogic 8.1 (experience in projects and certificates Sun Certified Programmer for the Java Platform 6 2008, Sun Certified Programmer for the Java 2 Platform 1.4 2003, Sun Certified Web Component Developer 2004)
• Microsoft Visual C++ 1.5 - 6.0, Microsoft Foundation Classes (MFC), Win32 API, Win 3.x API, ODBC API, WinSock API (experience in projects and certificate Microsoft Solution Developer in 1997)
• Microsoft Visual Basic 2.0 - 5.0, JetEngine with Microsoft Access databases, DAO, ADO, various VBX/OCX Controls (experience in projects and certificate Microsoft Solution Developer in 1997)
• C following K&R and ANSI under UNIX and MS-DOS, Curses windowing library, Codebase B-tree library, KOMBIS EM9750 API (experience in projects)
• Multimedia Toolbook 3.0, TBDC (experience in projects)
• PROGRESS 4GL & RDBMS V6.2 (experience in projects)
• Clipper Version A85 - 5.2, various Clipper libraries from KRS, CA, Huggle & Partner (experience in projects)
• UNIX shell (bash, ksh, sh) and development tools (experience in projects)
• Pascal, Modula, various BASIC interpreters

Modelling:

• OOA / OOD, UML, OMG certified UML Professional (OCUP) Fundamental in 2008
• Entity Relationship (ER)

Development tools:

• Eclipse 2 - 3.4, ANT, Maven, Together/J, Rational Rose
• Sourcecode Control Systems Perforce, SVN, CVS, MKS Source Integrity, UNIX SCCS
• Bugzilla and GNATS Bugtracking Systems

Networking:

• TCP/IP, NFS, Samba (UNIX/Linux)
• DSL/ISDN-Router- and Firewallsoftware for Linux
• Apache-httpd and CGI under UNIX
• uucp and UseNet under UNIX

Operating Systems:

• Microsoft Windows XP/NT4/NT3/98/95/3.1 (Certificates Microsoft Product Specialist for Windows XP Professional in 2004 and Microsoft Product Specialist for Windows 95 in 1997)
• Linux since version 1.2.13
• Interactive UNIX SysV 3.2, versions 1.0.6 - 3.0
• SCO-Xenix for Intel 286
• HP/DEC OpenVMS 7.2
• MS-DOS since version 2.11