Linux (RedHat & Centos v5 & v6 / Ubuntu Server / SuSE ) .
Unix ( Solaris 9 & 10 / AIX 5.3 & 6.1 / SGI IRIX for CAD/CAM application systems).
Server Virtualisation (OpenStack, IBM LPAR & VMware ESXi, Virtual Box and baremetal KVM ).
Storage (Brocade SAN, IBM SVC, HP MSA & EVA8000 and IBM DS8300 disk arrays).
Networking – Cisco routing & switching - TCP/IP, DNS design.
Security – Watchguard / Nokia / Checkpoint / Sonicwall – VPN configuration.
Database – MySQL (Percona) administration and replication setup.
Programming – Perl – Bash – HTML – CSS & xml.
Directory Services – Open LDAP, Novell NDS / some MS AD.
Monitoring with Cacti, Nagios & Observium.
Writing custom bash scripts for specific applications.
OpenSSL and Certificate Authority configuration
Web Hosting - Apache (including Joomla/Wordpress), nginx
Apache config (with php/SSL) - Weblogic Application Server
Liaison with customers, client groups & application support teams
Favourite Licence quote:-
"If the SOFTWARE is not accompanied by HARDWARE, you may not use the SOFTWARE."
Win eXPerimental EULA.