Java (AWT, Swing, J2ME, J2EE, Catalina / Tomcat, Ant, SOAP, JBoss, WebSphere, Hibernate), .NET Framework (managed, unmanaged C++, C#, Visual Basic), HTML/CSS, Javascript (DOM, jQuery, AJAX, JSON), PHP, Python, Perl, Bash, Batch.

Databases.

Windows, Linux and iOS system programming.

EFTPOS (Talaris XFS, NCR AANDC, CEN XFS).