Palvai Sai Kumar Reddy
Senior Network Security Engineer
About
Senior Network Security Engineer with 3+ years of experience securing and supporting enterprise networks. Skilled in Palo Alto firewalls, Zscaler ZIA/ZPA, CASB, Cisco routing/switching, F5, and cloud security. Strong in traffic analysis, automation (Python, SQL/NoSQL), dashboarding, and end-to-end security engineering for mission-critical environments.
Skills & Expertise (46)
Work Experience
Project Engineer
Wipro Pvt Ltd.
Oct 2021 - Dec 2022
Designed, configured, and supported enterprise LAN/WAN networks using OSPF, BGP, MPLS, VLANs, RSTP/MST, and Cisco/Aruba wireless infrastructure. Implemented secure data center migrations, MPLS VPN expansions, and identity-based access using Cisco TrustSec and firewall technologies. Managed DNS/DHCP, IPsec VPNs, F5 load balancers, and large-scale switch upgrades across multi-site environments. Built Terraform automation for provisioning network infrastructure and performed end-to-end troubleshooting for routing, switching, and wireless issues. Optimized existing LAN infrastructure by segmenting network traffic with VLAN mapping, enhancing network security, and reducing network latency by 25%; improved application performance for 200+ users. Installed fiber/copper cabling, maintained network physical layers, and minimized downtime during migrations.
Sr. Network Security Engineer
Riaz Credit Union
Feb 2024 - Oct 2025
Designed, implemented, and secured enterprise networks using Palo Alto PA-Series, Fortinet firewalls, Cisco/Arista switches, and SD-WAN technologies. Automated firewall, SD-WAN, and network configuration tasks using Python, Ansible, and CI/CD pipelines to improve operational efficiency. Managed large-scale data center and cloud environments including Cisco ACI, AWS VPC/CloudFormation, VLAN/VXLAN, DNS/DHCP, and identity-based access policies. Troubleshot complex routing, switching, and security issues using Wireshark, SolarWinds, and SIEM integrations, providing Tier-3 support across LAN/WAN/WLAN. Performed advanced troubleshooting and Tier-3 support for firewalls, routers, switches, wireless controllers (Meraki, Aruba), SD-WAN devices, and data-center hardware. Provided Tier-2/3 support, resolving complex routing, firewall, and wireless issues using Wireshark, SolarWinds, and SNMP-based tools.
Education
Masters (Cybersecurity and Information Assurance) - University of Central Missouri
2023 - 2024 · Afghanistan
Bachelor of Technology (Information Technology) - Saveetha School of Engineering
2016 - 2020 · Afghanistan
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