Job Posting: Senior L3 Network Security EngineerJob Title: Senior L3 Network Security EngineerLocation: BangaloreAbout the RoleWe are looking for a highly skilled and experienced Senior L3 Network Security Engineer to join our Network Operations & Infrastructure team. This is a senior technical role responsible for serving as the highest level of escalation for complex network and security incidents, driving infrastructure modernization initiatives, and ensuring the stability, performance, and security of enterprise environments.The ideal candidate will possess deep expertise in Palo Alto Networks, Aruba SD-WAN, Aruba Wireless & ClearPass NAC, and Cisco Enterprise Networking technologies, along with a robust background in troubleshooting, design, implementation, automation, and mentoring.Key ResponsibilitiesL3 Incident Management & Technical LeadershipAct as the final escalation point for critical P1/P2 network and security incidents.Perform advanced troubleshooting using packet captures, log analysis, and monitoring platforms.Conduct root cause analysis (RCA) and implement permanent corrective actions.Engage with vendor TAC teams (Palo Alto, Aruba/HPE, Cisco) for complex technical issues and upgrades.Lead major incident management and disaster recovery efforts.Palo Alto Network SecurityDesign and manage Palo Alto NGFW deployments and HA clusters.Administer Panorama for centralized firewall management.Configure and optimize:App-IDUser-IDThreat PreventionURL FilteringWildFireSSL/TLS DecryptionManage GlobalProtect VPN solutions including SAML/MFA integration.Design and troubleshoot IPsec VPN connectivity.Aruba Wireless & ClearPass NACDesign and support Aruba Wireless infrastructure including Mobility Controllers, Instant APs,



and Aruba Central.Engineer enterprise NAC solutions using Aruba ClearPass Policy Manager.Implement:802.1X Authentication (EAP-TLS/PEAP)MAC Authentication Bypass (MAB)Device ProfilingDynamic Role AssignmentPosture Assessment (OnGuard)Manage PKI and certificate lifecycle processes.Aruba SD-WAN EngineeringDeploy and optimize Aruba EdgeConnect (Silver Peak) environments.Configure Business Intent Overlays (BIO).Implement Dynamic Path Steering and WAN optimization policies.Support Direct Internet Access (DIA) and Cloud Security integrations.Manage SD-WAN Orchestrator platforms.Cisco Enterprise Switching & RoutingDesign and support Cisco Catalyst and Nexus environments.Configure and troubleshoot:BGPOSPFVRF-LiteVXLAN/EVPNVPC/VSS/StackWise VirtualMSTP/RPVSTLACPQoSACLsSupport enterprise campus, data center, and hybrid cloud connectivity.Documentation & Team DevelopmentDevelop HLDs, LLDs, SOPs, implementation plans, and failover runbooks.Mentor L1 and L2 engineers through technical workshops and knowledge-sharing sessions.Drive process improvements and operational excellence initiatives.Required Technical SkillsNetwork SecurityPalo Alto NGFWPanoramaGlobalProtect VPNSSL DecryptionThreat PreventionZone-Based Security PoliciesHigh Availability ConfigurationsAruba TechnologiesAruba ClearPass Policy Manager (CPPM)Aruba CentralAruba Mobility ControllersAruba Wireless (AOS 8.X / AOS 10.X)Aruba EdgeConnect / Silver Peak SD-WANCisco NetworkingCisco Catalyst 9300/9400/9500Cisco Nexus 5K/7K/9KBGP, OSPFLayer 2 & Layer 3 NetworkingVRF, VXLAN/EVPNQoS, ACLs, Port SecurityCore NetworkingTCP/IPDNS/DHCP (Infoblox)IPsec/GRESNMPv3NetFlow/IPFIXSyslogNTPBFDRequired Experience7 to 10+ years of hands-on experience in Enterprise Network & Security Engineering.Minimum 3+ years working as an L3 Engineer or equivalent senior technical role.Extensive experience supporting multi-vendor environments involving Palo Alto, Aruba, and Cisco technologies.Experience in high-availability enterprise environments, incident management, and disaster recovery planning.Strong troubleshooting and root cause analysis skills.Preferred CertificationsPalo AltoPCNSE (Palo Alto Networks Certified Network Security Engineer)PCDRAArubaACCP (Aruba Certified ClearPass Professional)ACCX (Aruba Certified ClearPass Expert)ACMP (Aruba Certified Mobility Professional)ACMX (Aruba Certified Mobility Expert)CiscoCCNP EnterpriseCCNP SecurityCCIE Enterprise InfrastructureCCIE Security

📌 Senior Network Security Engineer (Bengaluru)
🏢 Lorven Technologies
📍 Bengaluru