Below is an alphabetical listing of the techniques that I have experience in.
To keep it simple, there are four lists: one for each level of competency


I’m an expert, I know it inside and out

AJAX Asynchronous JavaScript and XML
Apache The most popular HTTP server software
CentOS Community Enterprise Operating System
Concrete5 CMS made ​​for Marketing but built for Geeks
Fedora Community-supported OS, sponsored by Red Hat
Hosting Managing shared hosting and dedicated servers
jQuery Cross-browser JavaScript library
JS JavaScript, client side scripting in the web browser
LAN Managing network infrastructure in data centers
Linux Operating Systems that use the Linux kernel
OS X Operating system for Apple Macintosh computers
Magento Open Source eCommerce / WebShop system
MySQL My Structured Query Language
Ogone International Payment Service Provider
Perl Practical Extraction and Report Language
PHP PHP: Hypertext Preprocessor
RHEL RedHat Enterprise Linux
Ubuntu Operating system based on Debian GNU / Linux
Varnish HTTP accelerator designed for content-heavy dynamic web sites
WordPress Open source CMS / blog publishing application


Extensive experience

Bash Bourne-again shell / scripting language
HAProxy Open source TCP / HTTP load balancer
HHVM HipHop Virtual Machine, super fast PHP execution engine by Facebook
HT Engineering high traffic websites
HTML HyperText Markup Language
iDeal Dutch standard for Internet payments
Lighttpd Web server optimized for speed-critical environments
MSOffice Microsoft Office, multiple versions
Munin System, network and infrastructure monitoring
Nginx Reverse proxy, load balancer, HTTP cache, and web server
Plesk Parallels Plesk Control Panel / Server Administrator
TT Template Toolkit
ZF Zend Framework


I can properly work with

CSS Cascading Style Sheets
Delphi Embarcadero / CodeGear / Inprise / Borland app development
Hardware Repairing desktop, laptop and server computers
Joomla Open source content management system (CMS)
Juniper Juniper Networks Edge Routers (BGP)
VirtualBox Oracle’s virtualization software
VMware Virtualization software / hypervisor
XML Extensible Markup Language


I worked with it for some time or some time ago

AS ActionScript programming language of Adobe Flash
Batch DOS Batch file scripting
Cisco Network routers by Cisco Systems
HA Engineering High Availability systems
Oracle DB Object-relational database management system
SOAP Simple Object Access Protocol
Solr Open source enterprise search platform from the Apache Lucene project
VB Visual Basic, Microsoft’s event-driven programming language
Vista Microsoft Windows Vista
XSD XML Schema Definition