Programming
In the languages Java, Perl, C/C++, PHP and others.
Software-Engineering
With unit testing, build automation, integration automation, object oriented analysis and design, design patterns, aspect oriented programming.
Operating Systems and Networking
Heterogenous networks, UNIX servers, Linux, BSD, migration from Novell and Windows networks to Linux.
Web Technologies and Web Architectures
XHTML, CSS, ECMAScript, XML, XSLT, DOM, application servers, web services.
Databases
MySQL, application servers.
Project Management
Agile Processes, Extreme Programming.