The main focus on high traffic website architecture.

• Red Hat Enterprise Linux, Oracle Linux (Oracle Unbreakable Enterprise Kernel), Ubuntu Server
• FastCGI, PHP-FPM » Caching systems - Varnish, APC, Memcache, Memcached, Redis, Aerospike, Couchbase
• SALI (Sara Automatic Linux Installer)
• Database-access middleware SQL Relay, Oracle Weblogic Server
• Apache HTTP, nginx
• VCS systems
• Oracle Containers for J2EE (OC4J)
• Manage dynamic infrastructure with Puppet
• BIG-IP F5
• vmware
• Nagios, Collectd, Gearman, Thruk, Graphite, Grafana
• Jenkins
• Atlassian's products (Confluence, Fisheye, JIRA)
• etc

Enjoying Python scripting.