Network Engineer Senior

SAIRAM GANTA

Senior Network Engineer

Mobile: 812-***-**** Email: **************@*****.***

PROFESSIONAL SUMMARY

Results-driven Senior Network Engineer with 5+ years of extensive experience in enterprise networking, security, and cloud networking across on-premises and hybrid infrastructures.

Proficient in designing, deploying, and troubleshooting LAN/WAN, data center, and cloud-based network infrastructures.

Hands-on expertise with Cisco Routers (ISR, ASR, 2500–7600 series), Catalyst/Nexus switches (2K–7K), Juniper Firewalls (SRX, NetScreen), Palo Alto, Check Point, and F5 BIG-IP load balancers.

Strong knowledge of routing protocols including BGP, OSPF, EIGRP, RIP, IS-IS, MPLS, VRRP, HSRP, GLBP, STP, VTP.

Skilled in firewall security, VPN technologies (IPSec, SSL, GRE, 3DES, AES-256), and AAA (TACACS+, RADIUS).

Extensive background in QoS, congestion management, shaping, policing, and VoIP deployments.

Proficient in wireless technologies including Aruba WLAN, LWAPs, WLC, AirMagnet, Aruba AirWave.

Strong experience in data center networking, VSS design, VLANs, trunking, and EtherChannel.

Hands-on expertise with network automation and scripting using Python, Ansible, Terraform, Netmiko, REST APIs.

Experienced in cloud networking across AWS (VPC, Transit Gateway, Direct Connect), Azure Virtual Networks, and GCP VPC networking.

Skilled in network monitoring and troubleshooting using Wireshark, Tcpdump, Netscout, CiscoWorks, HP OpenView.

Proven success in migrations, upgrades, and performance tuning for high-availability and mission-critical environments.

Strong focus on network security hardening, implementing IDS/IPS, firewall policies, NAT, ACLs, SSL inspection.

Collaborative team player with experience in cross-functional projects involving security, cloud, and application teams.

Excellent communication skills with the ability to document designs, create Visio diagrams, and present solutions to leadership.

TECHNICAL SKILLS

Networking Equipment: Cisco Routers (2500–7600, ISR, ASR), Catalyst (1900–6500), Nexus (2K–7K), F5 BIG-IP, Juniper (SRX, NetScreen, ISG), Palo Alto Firewalls, Check Point VSX, Aruba Switches & Wireless Controllers.

Routing & Switching Protocols: RIP, OSPF, EIGRP, BGP, IS-IS, MP-BGP, MPLS, VRRP, HSRP, GLBP, LDP, STP, VTP, VLANs, 802.1Q Trunking, EtherChannel.

WAN/LAN Technologies: Ethernet, Gigabit Ethernet, Frame Relay, PPP, MPLS, ATM, ISDN, DS1–DS3, OC3/OC12, P2P Circuits, SD-WAN, VoIP, QoS.

Network Security: Cisco ASA, PIX, Check Point, Palo Alto Threat Prevention, ACLs, NAT/PAT, IDS/IPS, IPsec VPN, SSL VPN, GRE, AAA (TACACS+, RADIUS).

Wireless Technologies: Aruba WLAN, LWAPs, WLC, WDS, AirMagnet, Aruba AirWave.

Tools & Monitoring: Wireshark, Tcpdump, Netscout, IXIA, Spirent, CiscoWorks, HP OpenView, WhatsUp Gold, SolarWinds, Visio.

Cloud Networking: AWS (VPC, Transit Gateway, Direct Connect, Security Groups), Azure Virtual Network, VPN Gateway, GCP VPC Networking.

Automation & Scripting: Python, Bash, Ansible, Terraform, Netmiko, Paramiko, REST APIs, YAML, JSON.

Infrastructure Services: DHCP, DNS, SMTP, FTP, TFTP, POP3, IPv4/IPv6.

Platforms: Windows, Linux, VMware ESXi, Cloud (AWS, Azure, GCP).

PROFESSIONAL EXPERIENCE

Client: Walt Disney Company, Orlando, FL JULY 2023 - Present

Role: Senior Network Engineer

Designed, implemented, and supported LAN/WAN and data center networks with Cisco ISR/ASR routers and Nexus switches.

Installed, configured, and troubleshot Juniper Firewalls, Palo Alto, and Cisco ASA 5500 appliances.

Migrated IPsec VPN tunnels from Pre-Shared Keys to Certificate Authority to enhance scalability and security.

Managed Layer 2 & 3 protocols including BGP, OSPF, MPLS, VRRP, and VPLS in multi-vendor service provider environments.

Configured and optimized F5 LTM load balancers, including VIPs, pools, iRules, and profiles.

Implemented site-to-site VPNs using PIX firewalls with 3DES and AES encryption.

Deployed and managed Aruba WLAN, LWAPs, WLCs, WDS, and 802.11 devices across corporate networks.

Integrated and troubleshot LTE SAE Gateways, UMTS, and GPRS protocols (S1-MME, S1-U, S6a, S11, GTPv2).

Conducted wireless data core troubleshooting, including interfaces, architectures, and operator end-to-end systems.

Configured AAA security using Juniper IC Infranet Controllers (MAG-SM360, MAG-4610).

Provided QoS and VRF solutions, ensuring efficient traffic prioritization and routing.

Performed performance and feature testing using IXIA, Spirent Landslide, and Netscout.

Monitored and troubleshot LTE/UMTS/GPRS networks ensuring high reliability.

Collaborated with cross-functional teams to design and document network architecture using Visio.

Ensured compliance with security standards and high-availability designs in mission-critical environments..

Environment: Cisco ISR/ASR Routers, Nexus 7K/5K/2K, ASA 5500, Palo Alto, Juniper Firewalls (SRX/NetScreen), F5 LTM 10.x/11.x, Aruba WLAN, LTE SAE Gateways, Openet LTE Nodes, MPLS, OSPF, BGP, VRRP, VPLS, IPsec VPN, AAA Security, IXIA, Spirent, Wireshark, Netscout.

Client: OPTUM, India Aug 2019 – NOV 2022

Role: Network Engineer

Designed and implemented Virtual Switching System (VSS) for user and server segments using Cisco Catalyst 6509-V-E.

Configured, monitored, and troubleshot Cisco ASA 5500, PIX firewalls, and Check Point firewalls.

Implemented and migrated IPsec and GRE VPNs for secure client connectivity.

Configured and optimized BGP, EIGRP, OSPF, and MPLS during client migrations.

Supported Cisco Nexus 5000 and 7000 series switch fabric links for data center networks.

Deployed and managed F5 BIG-IP load balancers for high-availability applications.

Configured AAA security with Juniper IC Infranet Controllers (MAG-SM360, MAG-4610).

Provided data center design, installation, and rack-n-stack of network devices.

Configured Palo Alto firewalls, implementing security NAT, threat prevention, and URL filtering.

Delivered QoS and VoIP solutions across enterprise networks.

Configured and maintained VLANs, EtherChannel, 802.1Q trunking, spanning tree (STP).

Performed firewall administration, provisioning Check Point and Cisco ASA firewall policies.

Conducted network migrations, upgrades, and client onboarding with minimal downtime.

Created Visio diagrams, documentation, and runbooks for network designs and operations.

Worked with ISP vendors to maintain and troubleshoot WAN/MPLS circuits ensuring 24/7 connectivity.

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Environment: Cisco Catalyst 6509-V-E, Nexus 5K/7K, Cisco ASA 5500, PIX Firewall, Check Point Firewall, Palo Alto Firewalls, F5 BIG-IP, Juniper IC MAG-SM360/MAG-4610, VSS, VLANs, QoS, VoIP, MP-BGP, OSPF, EIGRP, MPLS, EtherChannel, ACLs, VPNs, IDS/IPS, NAT, Threat Prevention, URL Filtering, Visio, ISP Coordination.

CERTIFICATIONS

AWS Certified Solutions Architect – Associate

Cisco Certified Network Professional (CCNP) – Security

Cisco Certified Network Associate (CCNA) – Routing & Switching

EDUCATION

Master of Science in Computer Technology – Eastern Illinois University

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