Open to opportunities

Thirumal Reddy Nallapu

@thirumalreddynallapu

Message

Senior network engineer specializing in routing, security, and WAF-driven web protection.

United States

Message

What I'm looking for

I want to build resilient, security-first hybrid networks and automate operations—routing, firewall/WAF, and load balancing—while partnering with teams that value documentation, uptime, and measurable threat reduction.

I’m a senior network engineer with 8+ years of hands-on experience across campus and data center environments, working with Cisco, Juniper, Aruba/HP and other multi-vendor platforms. I architect and administer highly available routing and switching designs using protocols like BGP, OSPF, EIGRP, and IS-IS, and I bring proven expertise in network security, VoIP, and mission-critical private cloud infrastructure.

I deliver end-to-end security and availability for enterprise applications—administering Imperva Cloud WAF and DDoS Protection, supporting Palo Alto/Cisco ASA/Check Point/Fortinet firewalls, and integrating load balancing with F5 and NetScaler. I also support VMware vSphere environments, cloud networking and controls across AWS/Azure/GCP, and I’m very enthusiastic about network automation using Python and Ansible to improve configuration, documentation, troubleshooting, and workflow integration.

Experience

Work history, roles, and key accomplishments

Current

Sr. Network Engineer

Current

Amazon

Nov 2025 - Present (9 months)

Administer and configure Check Point, Cisco ASA, and Palo Alto firewall environments across global networks. Architect and operate Cisco Nexus/Catalyst-based routing and switching, VMware vSphere clusters, and Imperva Cloud WAF/DDoS services for AWS-hosted applications.

Sr. Network Engineer

AT&T

Jul 2024 - Nov 2025 (1 year 4 months)

Design and support data center and enterprise LAN/WAN consolidation using Cisco Nexus/Catalyst platforms and Palo Alto/Check Point security environments. Provide 24x7 on-call support, manage routing and virtualization infrastructure, and coordinate vulnerability management and incident response efforts.

Network Engineer

Accenture

Jan 2021 - Dec 2023 (2 years 11 months)

Support multi-site enterprise networking using Cisco routers, switches, firewalls, and virtualization. Administer Windows/Linux services, perform Nessus vulnerability assessments, and assist with datacenter migration and Tier-3 incident support.

EtherChannel Spanning Tree Cisco Firewalls Resource Optimization Windows Server Active Directory DNS DHCP Group Policy Linux RHEL CentOS Ubuntu MFA Nessus Load Balancing Solarwinds PRTG Splunk Wireshark Change Management

Network & Security Administrator

Array Networks

Sep 2017 - Dec 2020 (3 years 3 months)

Implement and manage enterprise network security using Cisco ASA, Palo Alto, and Fortinet firewalls, including security profiles, NAT, zones, and VPN configurations. Support campus and data center environments and deliver WLAN engineering and related authentication integrations.