- Complex server-side web programming using PHP and MySQL; 
- Script coding and installation in Perl, PHP, Unix shell, and Windows VB Script; 
- Client-side web programming using JavaScript; 
- HTML, DHTML, CSS and XML web site coding; 
- Technical work with graphics (not design); 
- Data mining; 
- Web site monitoring; 
- Payment gateway integration (Verisign, Authorize.net, iBill, Paypal, e-gold, and several others) 
- etc.