Provide L3 operational support for enterprise network security platforms in a global, multivendor environment. Manage and troubleshoot Check Point and Palo Alto firewall policies, NAT, routing, VPNs (sitetosite and remote access), and SSL inspection. Administer and support Infoblox DDI/DDM: DNS zones, DHCP scopes, and IPAM lifecycle Network discovery, IP reconciliation, and rogue device detection IP data cleanup, audits, and ongoing lifecycle management Support F5 BIGIP LTM operations, including: L3/L4 troubleshooting for application connectivity issues SSL certificate management and renewals Pool/member monitoring and performance optimization Execute change management activities including impact analysis, implementation, validation, and rollback planning. Handle incident response, root cause analysis, and problem management following ITIL processes. Perform policy reviews, rule optimization, compliance checks, and security audits. Participate in oncall rotations, upgrade activities, a...