Tejavath Saikumar
Python • AI/ML • Data Analytics • C • SQL | Master\'s Student in Data Analytics at Nova Southeastern University | Passionate About Data-Driven Solutions | Seeking Internship Opportunities to Build Real-World Impact.
- Role
- Network Security Engineer at BlackRock
- Location
- Fort Lauderdale, FL, US
- LinkedIn followers
- 500 followers
About Tejavath Saikumar
Python Developer with 3 years of experience designing and implementing scalable web…
Experience
Network Security Engineer
Nov 2025 — Present · US
Integrated Palo Alto PA-5200 series firewalls into core enterprise and data center environments, implementing App-ID, User-ID, Threat Prevention, and SSL decryption, strengthening security posture and improving compliance audit scores by 40%.• Deployed and managed Cisco Viptela SD-WAN across 50+ branch and enterprise sites, configuring centralized policies, MPLS + Internet transport, and QoS to improve application performance and achieve 99.99% WAN uptime.• Implemented TACACS+ based authentication and RBAC, improving privileged access control while reducing unauthorized access incidents by 60%.• Installed, configured, and maintained Cisco Nexus 9K, Catalyst 4500 & 3800 switches, supporting high-density VLAN, trunking, and redundancy designs, improving network throughput by 35%.• Administered Cisco ASA firewalls, configuring ACLs, NAT policies, and IPsec site-to-site & remote-access VPNs for users, enhancing secure remote connectivity and reducing VPN incidents by 45%.• Configured and optimized OSPF and BGP routing across enterprise WAN and data center environments, achieving sub-second convergence and improving network resiliency and failover performance by 50%.• Managed Cisco 9800 Wireless LAN Controllers, deploying secure SSIDs, RF optimization, and QoS policies across 25+ locations, reducing Wi-Fi-related support tickets by 55%.• Developed Python-based automation scripts to collect configurations, parse syslogs, and monitor interface health, cutting manual troubleshooting time by 65% and accelerating fault isolation.• Designed and implemented AWS hybrid-cloud networking, configuring VPCs, subnets, route tables, IGWs, NAT gateways, and VPN tunnels, enabling secure low-latency connectivity between on-prem and cloud workloads.• Led proactive network monitoring, troubleshooting, and root-cause analysis using Wireshark, SNMP tools, Ping, and Traceroute, reducing mean time to resolution (MTTR) by 48%.
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