System Administrator

• Administer and troubleshoot F5 BIG-IP/LTM, including virtual servers, pools, health monitors, profiles, persistence, iRules, SSL/TLS, and certificates
• Administer and support Imperva WAF, including application onboarding, security policies, blocked-request and false-positive troubleshooting, and policy tuning
• Troubleshoot application traffic across DNS, WAF, firewalls, load balancers, web/application servers, and backend services
• Administer and troubleshoot Microsoft Windows Server, including Active Directory-integrated environments, IIS, DNS, certificates, services, and permissions
• Support VMware vSphere, vCenter, ESXi, HA, DRS, vMotion, virtual machines, and clusters
• Support production incidents, root-cause analysis, vulnerability remediation, patching, upgrades, and infrastructure changes
• Participate in disaster recovery, failover testing, infrastructure monitoring, and capacity management
• Create and maintain technical documentation, diagrams, runbooks, and recovery procedures
• Collaborate with Security, Network, Application, and Database teams to resolve complex infrastructure and application-delivery issues
• Participate in an on-call rotation as required
• Follow application requests end-to-end across client, firewall, Imperva WAF, F5, web/application server, and backend services
• Identify opportunities to automate repetitive activities, eliminate recurring incidents, improve documentation, and increase infrastructure reliability

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