Lead Network Administrator

Job Title: Lead Network & Security Engineer Experience Required: 10–12 Years Location: Hyderabad OSI Digital is looking for Lead Network Security Engineer with strong expertise in Palo Alto (firewalls, Panorama), Arista Spine-leaf and Cisco ISE . The candidate should possess extensive experience in traffic analysis, rule base review, network access control, and data center migration projects. This role requires a proactive professional who can ensure the efficiency, security, and compliance of our client’s enterprise network infrastructure. Key Responsibilities: Palo Alto & Panorama Manage, configure, and optimize Palo Alto firewalls and Panorama. Analyze network traffic and firewall rules to ensure compliance and security. Review, audit, and optimize security policies and access rules. Identify and block vulnerable ports/services to strengthen network defense. Perform rule base clean-up, removing unused or redundant rules. Ensure best practices are followed for firewall and Panorama operations. Network Access Control (NAC) Implement and manage 802.1X authentication . Administer and troubleshoot Cisco ISE for NAC and policy enforcement. Integrate NAC solutions with security infrastructure. Migration Projects Lead or support data center migration activities from legacy to modern environments. Ensure minimal downtime and smooth cutover during migrations. Validate switch-to-firewall traffic paths and ensure seamless connectivity. Security & Network Operations Provide end-to-end analysis of network and security flows. Monitor, troubleshoot, and optimize performance issues across network layers. Collaborate with cross-functional teams to strengthen enterprise security posture. Required Skills: 10 to 12 years of professional experience in network security engineering . Strong hands-on expertise in Palo Alto Networks firewalls & Panorama . Proven experience in rule analysis, clean-up, and traffic analysis . Solid understanding of network access control (802.1X, Cisco ISE) . Good Understanding of static Routing and Dynamic Routing like BGP OSPF and EIGRP. Hands on exposureon Arista Spine-leaf architecture. Experience in data center migration and large-scale infrastructure projects. Deep knowledge of switch traffic paths, firewall integration, and network security design . Strong troubleshooting, analytical, and documentation skills.. Preferred Qualifications Palo Alto certifications (e.g., PCNSE, PCCSA, PCNSA ). Cisco certifications ( CCNA, CCNP Security, CCNP Enterprise ). Experience with multi-vendor environments and security best practices. We are not looking for someone who is: Not interested to work from office. Not willing to work in a 24*7 shift roster. Who hasn’t supervised any Shift.