Network Security Engineer

Job Description

"Please send your responses at "Radhika.Gupta1@teleperformance.com ". Work Exp: 7+yrs Work Location: Mumbai/Gurgaon Role Summary: We are looking for a highly skilled Senior Network Engineer with 7-12 years of experience working on large-scale, enterprise-grade IT infrastructure Networks. This engineering role involves high-level support, hands-on deployments, and escalated troubleshooting across core networking and security systems. Candidate needs to have experience on devices such as Cisco 9000/8000 series switches and routers, Fortinet FortiManager/FortiAnalyzer, and Palo Alto Panorama/Strata. You will be part of the engineering team, contributing to network transformation, optimization, and infrastructure readiness for the future. Key Responsibilities: Lead or support escalated L3 troubleshooting for complex enterprise network and security major incidents. Perform end-to-end design validation, device configuration, migration, and deployment for new network rollouts and upgrades. Work on high-performance large data centres and distributed environments Provide expert-level support during change implementations, post-deployment testing, and UAT. Ensure network designs comply with architectural standards, scalability, and future-readiness goals Manage and update high-quality network diagrams and configuration documentation. Participate in vendor coordination for hardware issues, RMAs, and software bugs scrubs. Collaborate with cross-functional teams (Security, Cloud, Ops, service delivery) for holistic incident handling and optimization Contribute to problem management reviews, long-tail incident analysis, and remediation planning Serve in a 16x7 rotational escalation schedule. Device lifecycle management and EOL / EOS management. 🛠 Key Technical Skills & Experience: Core Networking & Routing: Hands-on experience with Cisco 9000 Series Switches (Catalyst & Nexus), Arista switches. Knowledge of Cisco 8000 Series Routers, ASR & ISR platforms Strong routing protocols: BGP, OSPF, EIGRP, MPLS, VXLAN, VRF/VRF lite SD-WAN knowledge preferred (Cisco, Viptela, Citrix, Versa, Fortinet). Cisco Data Centre technologies like ACI (Spine / Leaf) architecture. Knowledge of HPE devices would be an added advantage. Network Security: Extensive experience on Fortinet Firewalls (FortiGate) including FortiManager / FortiAnalyzer. Deep understanding of Palo Alto Networks including Panorama, Prisma Access / Prisma Cloud, Strata & Next-Gen Firewalls. Familiarity with Cloud instances of PA would be an added advantage. Knowledge and administration experience Cisco ISE. Familiar with Cisco FMC / FTD (Firepower Threat Defence) and ASA platforms Firewall rule design, policy tuning, NAT, segmentation, and HA configurations Basic knowledge and understanding of various audit types like ISO / PCI-DSS, SOC, SOC2, VA/PT. Wireless & LAN Experience with HPE Aruba / Fortigate Wireless / Cisco Wireless LAN Controllers (WLC 9800 Series) and Aps. Troubleshooting large campus/branch wireless deployments (Wireless Band 5/6/7) Tools & Automation: Experience with Network Monitoring Tools (SolarWinds, PRTG, Cisco Catalyst manager) Knowledge of Ansible or Python for automation is a bonus Preferred Certifications (not mandatory but advantageous): Cisco: CCNP Enterprise, CCIE (written or lab) Palo Alto: PCNSE Fortinet: NSE 4/5/6 Cloud: Azure Network Engineer Associate, AWS Advanced Networking Soft Skills & Collaboration: Strong written and verbal communication skills — ability to explain complex topics clearly Capability to handle pressure during escalations and major incidents Proven ability to work in matrixed environments and across geographies Attention to documentation, reporting, and escalation hygiene Experience in working with Visio / Ms Excel will be an advantage.