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Network Engineer Computer Science

Location:
Ahmedabad, Gujarat, India
Posted:
July 08, 2025

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Resume:

HARSHA VARDHAN REDDY PATLOLLA

Birmingham, AL (Open to Relocate) • ***********@*****.*** • +1-659-***-**** Authorized to work • Linkedin

Summary

Network Engineer with 3+ years of experience in supporting enterprise LAN/WAN environments, implementing routing protocols, configuring firewalls, and managing VPNs and wireless infrastructure. Skilled in troubleshooting and maintaining network performance in fast-paced IT environments. Experienced with industry-standard tools and platforms including Cisco IOS, Palo Alto Firewalls, Meraki, SolarWinds, and Infoblox. Strong team collaborator with a focus on security, uptime, and scalable network design.

Education

Master of Science in Computer Science

University of Alabama at Birmingham, Birmingham, AL Bachelor of Technology in Computer Science

GITAM University, Hyderabad, India

Skills

● Networking: TCP/IP, VLAN, VPN (IPsec/SSL), BGP, OSPF, DNS, DHCP, ACL, NAT, STP

● Devices: Cisco ISR/Catalyst, Palo Alto NGFW, Meraki, F5 LTM, Aruba APs

● Monitoring: SolarWinds, NetFlow, Wireshark, PRTG

● Automation: Python, Ansible, Bash

● Cloud & Virtualization: AWS (VPC, EC2, Route Tables), Azure, VMware vSphere

● Security: Firewall Rules, MFA, RADIUS, TACACS+, SIEM

● Documentation & ITSM: Visio, Confluence, ServiceNow, Change Logs

● Tools: SecureCRT, Infoblox, Git, SCP/TFTP

● Operating Systems: Linux (Ubuntu, CentOS), Windows Server Experience

Humana, USA Jan 2025 - Current

Network Engineer

● Configured and optimized OSPF, EIGRP, and BGP on Cisco routers, improving routing efficiency by ~15% across 10+ sites while enforcing ACLs per security standards and adhering to ITIL change policies.

● Deployed EtherChannel port channels between core and distribution switches, increasing aggregate bandwidth by

~40% and enhancing failover capabilities.

● Troubleshot complex LAN/WAN routing and VPN issues, reducing average ticket resolution time by ~30%, and coordinated with senior engineers to fine-tune global WAN architectures.

● Led a phased migration from Citrix NetScaler to F5 BIG-IP, achieving <2 hours cumulative downtime across all sites during cutover windows.

● Automated ~60 device configuration updates and scheduled backups using Ansible and Python, cutting manual task time by over 50% and reducing configuration drift.

● Administered Nokia IPSO firewalls, implementing 20+ security rulesets to tighten perimeter defenses and support evolving compliance needs.

● Supported a global MPLS network across 150+ sites, optimizing BGP/EIGRP routing policies; deployed Arista switches and onboarded Cisco Nexus 9000 ACI to streamline SDN operations.

● Designed and implemented secure hybrid connectivity with Azure Virtual Networks, VPN, and ExpressRoute, while configuring Juniper SRX routers and assisting in two key MPLS migration phases.

● Ensured 99.9% uptime for critical applications by proactively monitoring and resolving network issues in AWS and Azure environments, sustaining resilience across multiple regions. DXC Technology, India Jun 2023 - Dec 2024

Network Engineer - Remote

● Configured VLANs, OSPF routing, and NAT policies on Cisco ISR routers and Layer 3 Catalyst switches across 10 branch offices, supporting MPLS and VPN connectivity.

● Deployed and administered Palo Alto Next-Generation Firewalls (NGFW), setting up security zones, application-based policies, dynamic address groups, and User-ID integrations for Zero Trust access.

● Built and maintained IPsec and SSL VPN tunnels, enforcing MFA via Duo and RADIUS authentication, enabling secure remote access for distributed teams.

● Monitored network health using SolarWinds, NetFlow Analyzer, and SNMP traps, tracking interface utilization, latency spikes, and top talkers to proactively address congestion.

● Rolled out Meraki SD-WAN and wireless access points, configuring SSID VLAN tagging, traffic shaping, and 802.1X authentication for secure branch wireless networks.

● Managed Infoblox IPAM, overseeing DNS zone files, DHCP reservations, and conducting regular IP utilization audits to eliminate duplicate or stale records.

● Automated router, switch, and firewall configuration backups using TFTP/SCP, and tracked version changes via Git, enabling fast rollbacks and compliance checks.

● Collaborated with security teams for incident response, performed root cause analysis (RCA) on high-severity outages, and documented recovery procedures in Confluence as part of ITIL change management. Hexaware Technologies, India Jan 2022 - May 2023

System Engineer

● Provisioned VLANs, 802.1Q trunking, and inter-VLAN routing on Cisco Catalyst switches, supporting access control with MAC security and port security policies.

● Configured Cisco ASA firewall rules, including NAT/PAT, ACLs, and VPN groups, while monitoring AnyConnect logs to identify anomalies and optimize SSL VPN connections.

● Managed Aruba controller-based WLAN, deploying SSIDs, mapping them to VLANs, and enforcing RADIUS authentication for role-based access control (RBAC).

● Assisted in deploying Meraki SD-WAN solutions at branch sites, configuring dual WAN uplinks, failover, QoS policies, and monitored WAN health metrics using Meraki Insights.

● Conducted packet captures with Wireshark to troubleshoot application latency, path MTU issues, and resolve asymmetric routing loops.

● Maintained TFTP backups for network device configs and utilized Git repositories to manage version control, ensuring swift rollback during planned changes.

● Updated DHCP scopes and DNS zones via Infoblox, resolving IP conflicts, cleaning stale records, and collaborating on zone propagation issues.

● Managed tickets in ServiceNow, adhering to ITIL frameworks for incident, change, and problem management, and contributed to monthly KPI and SLA compliance reports.



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