- Computer Network
- Computer Maintenance
- Upgrading hardware and software
- Troubleshooting Hardware and software
- Computer Networking (Windows NT, 2000, XP)
- Operating System (Windows XP (Prof,Server),Linux (Debian Distro),OpneSUSE, UNIX Sun Solaris, Mac OS X
- Graphic Design (Adobe Photoshop,GIMP)
- Programming Langguages (HTML, ASP, PHP,Unix Scripting)
- Databases (MySQL,PostgreeSQL,Oracle)
- Hardware and Software Installer
- Telecommunication Transmission 2G, 3G
- Telecommunication Core Network, MSC, SMSC, iSMSC, MMSC, iMMSC, GGSN, SGSN
- Telecommunication Down Stream , Billing System, Interconnection Billing, Revenue, Revenue Sharing, Telecommunication CRM
- Server Virtualization , VMWare Esx 4.0 , VMWare Esx 5.0
- Open Source Implementation for Various IT Solution