Scripting Languages: Python, Korn shell, Bourne Shell, AWK, Sed, Ruby
Operating Systems: AIX, Red Hat Enterprise Linux, CentOS,FreeBSD, Ubuntu, Illumos/Solaris
Server Platforms: IBM BladeCenter, IBM X Series, IBM Power Systems, HP Proliant Blades, Dell Poweredge
Wired Networking: Juniper QFX, NetScaler MPX/VPX, Cisco Catalyst/ASA, Sonicwall E Class, Dell Powerconnect, Force 10
Configuration Management: Ansible, Chef, Puppet
Cloud Technologies: Consul, Nomad, Vault, Jenkins, Docker
Virtualization Platform: Xen, KVM, Ovirt, ESX/Vsphere, Eucalyptus, Virtualbox,Opennebula
Monitoring: Nagios, Graphite, sFlow, SNMP, Circonus, Prometheus