Network Engineer Palo Alto

VENKATESH MADDULA

405-***-**** ******************@*****.*** Edmond, OK 73013

SUMMARY

Network Engineer with 4+ years of experience managing enterprise networks using Cisco, Juniper, and Palo Alto systems. Designed and configured LAN/WAN and hybrid cloud networks, improving uptime and scalability. Reduced failover time by 40% by implementing HSRP and VRRP. Improved routing efficiency by 30% through OSPF, EIGRP, and BGP optimization. Deployed secure IPsec and SSL VPNs for 20+ branch offices. Decreased incident resolution time by 50% using tools like Wireshark, SolarWinds, and PRTG. Led troubleshooting and performance tuning efforts across critical infrastructure, supporting over 1,000 users with minimal downtime. TECHNICAL SKILLS

Routing & Switching: BGP, OSPF, EIGRP, MPLS, Static Routing, Route Redistribution, VRRP, HSRP, GLBP, VLANs, Inter-VLAN Routing, STP, RSTP, EtherChannel

Networking Fundamentals: TCP/IP, IPv4, IPv6, Subnetting, Ethernet, NAT, ARP, ICMP, DNS, DHCP, QoS Enterprise Networking: SD-WAN, VPN (IPsec, SSL), MPLS, VoIP (SIP, RTP), Network Performance Optimization Firewall & Security: Cisco ASA, Palo Alto, Fortinet, ACLs, IPsec, TLS, SSL VPN, NGFW, IDS/IPS, 802.1X Access Control & Identity: Cisco ISE, AAA, RADIUS, TACACS+ Network Infrastructure & Devices: Cisco & Juniper Routers/Switches, Aruba Controllers, Cisco Access Points Network Protocols: UDP, SNMP, DNS, DHCP, HTTP, HTTPS, FTP, SSH, Telnet, NetFlow Monitoring & Troubleshooting: SolarWinds, PRTG, Zabbix, Wireshark, Tcpdump, Ping, Traceroute, Nslookup, Nmap Network Automation & Scripting: Python, Ansible, Bash, PowerShell Cloud & Virtualization: AWS, Azure, Cisco ACI, VMware NSX, vSphere Load Balancing & Traffic Management: HAProxy, Nginx Version Control: Git, GitHub

Wireless Networking: Wi-Fi, Aruba Wireless

Operating Systems & System Administration: Linux (Ubuntu, CentOS), Windows Server Compliance & Best Practices: ISO 27001, NIST, ITIL EXPERIENCE

Verizon Wireless Systems Sep 2023 – Present

Network Engineer

Configured OSPF and BGP to reduce latency by 15ms and improve uptime across more than 50 remote sites, with performance gains reviewed by the senior architect.

Implemented HSRP for gateway redundancy, achieving sub-second failover and minimizing downtime during primary device failures.

Set up and resolved issues in VLANs, 802.1Q trunk links, Inter-VLAN routing, and VTP to support segmented network environments.

Maintained Cisco ASA firewalls, applying VPN configurations, ACLs, and security policies for secure external and internal communication.

Enabled routing interoperability by redistributing routes between EIGRP and OSPF, allowing seamless data flow between routing domains.

Increased backbone throughput by combining four 10 Gbps links using EtherChannel, improving communication between distribution and core switches.

Used Cisco Packet Tracer and physical lab setups to test changes on 30+ devices, reducing misconfiguration risk before deployment.

Identified and resolved Layer 2 issues, including spanning tree loops and port conflicts, through STP/RSTP diagnostics and tuning.

Monitored network performance using SNMP tools, detecting bandwidth constraints and hardware faults, ensuring uninterrupted service for essential applications.

Compiled and maintained accurate records of topologies, network changes, and procedures to support compliance and team- wide knowledge sharing.

Coforge Jan 2019 – Nov 2021

Network Engineer

Automated configuration of 50+ network devices using Python and Ansible, reducing setup time and serving as subject matter resource for automation practices.

Designed and maintained Layer 3 topologies using OSPF with manual summarization to minimize routing table size and optimize route distribution.

Created and deployed Python scripts and Ansible playbooks to standardize switch and router configurations across different network segments.

Implemented QoS policies and IP SLA probes to reduce VoIP latency by 40% and improve application responsiveness during peak usage.

Managed internal DHCP and DNS services, enabling failover support and IP allocation through scoped assignments.

Configured IP SLA and traffic prioritization to maintain quality for voice and latency-sensitive traffic.

Analyzed traceroute, debug, and syslog on Cisco IOS to identify routing issues; escalated and resolved high-impact problems

Enabled SSH access and applied AAA authentication using RADIUS and TACACS+, strengthening device-level access control.

Activated BPDU Guard to prevent unauthorized topology changes and protect Spanning Tree integrity on access ports.

Led five internal training sessions on network troubleshooting, reducing recurring support incidents in the following month. EDUCATION

Masters in Computer Science

Oklahoma Christian University

Bachelors in Electronics and Communication Engineering KL University

CERTIFICATIONS

Cisco Certified Network Associate – CCNA

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