Full-stack knowledge of IT infrastructure: Applications, Databases, Operating Systems (Windows, Unix, and Linux), Hypervisors, IP Networks (WAN and LAN), Storage Networks (Fibre Channel, iSCSI, and NAS), Backup Networks and Media, Containers/Kubemetes, Public Cloud Services, and Securing Public Cloud Services. Direct, hands-on experience or strong working knowledge of managing security infrastructure such as firewalls, intrusion prevention systems (IPSs), web application firewalls (WAFs), endpoint protection, SIEM and log management technology, and vulnerability management tools.