Databases: Firebird, Interbase, MSSQL, MySQL, Oracle. Database technologies: Database connectivity, Clustering, Replication, Optimization, ADO, ODBC, JDBC, PL/SQL, T-SQL. Web technologies: PHP, DHTML, HTML, XHTML, XML, Javascript, AJAX, JSON, JQuery, CGI, UA Robots, Portal solutions, CMS, Payment gateways. .NET technology: C#, .NET, .NET Remoting, DotNetNuke, NUnit, Rainbow. Other technologies: C, C++, TCP/IP sockets etc. Software: ER-Studio, Visio, Delphi, RAD Studio, SharpDevelop, Visual Studio, Firewokrs, Photoshop Development process: Documentation, Version control, QA.