Network Engineer Unified Communications

Sai Jashwanth Samudrala

Network Engineer

+1-551-***-**** ***************@*****.*** LinkedIn

SUMMARY

Experienced Network Engineer with 5+ years of hands-on expertise in enterprise network design, VoIP infrastructure, and cloud networking across global environments in the USA and India. Skilled in deploying and supporting Cisco Unified Communications (CUCM, CUC, CER), routing and switching (OSPF, BGP, EIGRP), F5 load balancing (LTM, GTM, ASM, APM), and Azure networking. Proven ability to maintain 99.9% uptime across hybrid networks, optimize VoIP systems, and implement secure VPN and firewall solutions. Strong documentation, troubleshooting, and cross-functional collaboration skills, with a consistent record of improving performance, availability, and user experience in fast-paced, high-availability environments. SKILLS

• Network Infrastructure & Protocols : TCP/IP, UDP, BGP, OSPF, EIGRP, MPLS, HSRP/VRRP, DNS, DHCP, NAT, IPv4/IPv6

• Network Security & Firewalls : Fortinet, Cisco ASA/Firepower, Palo Alto, VPN (IPSec/SSL), Zero Trust, NAC, ACLs, IDS/IPS

• Routing & Switching : Cisco Catalyst & Nexus Series, Arista, Juniper EX/QFX, Layer 2/3 Switching, VLANs, STP, EtherChannel

• Wireless & Remote Access : Cisco Wireless LAN Controllers (WLC), Meraki, Aruba, RADIUS, Wireless Survey Tools

• Cloud & Virtualization :AWS Networking (VPC, Direct Connect, Transit Gateway), Azure Virtual Network, Microsoft Azure Active Directory, SD-WAN, VMware NSX, Cisco ACI

• Monitoring & Performance : SolarWinds, PRTG, Wireshark, Nagios, NetFlow, SNMP, NetBrain, Splunk

• Network Automation & Scripting :Developer Handoff (Figma, Zeplin), Design Tokens, Version Control in Design, Cross-functional Collaboration

• Tools & Platforms : Cisco IOS/NX-OS, CUCM (Cisco Unified Communications Manager), CER (Cisco Emergency Responder), CUIC (Cisco Unified Intelligence Center), Cisco Jabber, Nice Engage, F5 Load Balancers, Citrix Netscaler, ServiceNow, Microsoft Visio

• Certifications : CCNA Routing and Switching, CCNP 350-801 CLCOR EXPERIENCE

• HCL Technologies Sep 2024 – Present

Network Engineer USA

Administer and troubleshoot global LAN/WAN infrastructure (Cisco switches/routers, Meraki, SD-WAN) using STP, VLANs, OSPF, BGP, and MPLS, sustaining 99.9% network availability.

Architect and optimize F5 BIG-IP (LTM, GTM, ASM, APM) load-balancer clusters, delivering secure, high-availability application traffic and reducing average response time 20%.

Harden security with site-to-site & remote-access VPNs, firewalls, 802.1X, TACACS+, cutting unauthorized access incidents 30% while ensuring compliance with corporate standards.

Integrate on-prem networks with Microsoft Azure (VNet peering, ExpressRoute, VPN Gateway), enabling hybrid-cloud connectivity and policy-based routing for 40+ business applications.

Lead proactive performance analytics via Wireshark, SolarWinds, NetFlow, driving root-cause resolution and maintaining ITIL-aligned documentation (CMDB, SOPs, change records).

Configure and support advanced network redundancy and failover mechanisms using HSRP, VRRP, and load balancing, ensuring high availability and minimal service disruption.

• Cognizant Technology Solutions Jun 2022 – Sep 2023 VoIP/Network Engineer India

Provided end-to-end support and maintenance for enterprise telephony and contact center infrastructure, including CUCM, SIP gateways, and ACD systems, ensuring 99.9% communication uptime.

Conducted advanced IP Telephony (IPT) system tuning, call flow optimization, and capacity analysis, resulting in a 20% improvement in call quality and reduced dropped calls.

Collaborated across network security, wireless, and voice teams to deliver integrated solutions, enhancing cross-platform interoperability and data protection.

Installed, upgraded, and troubleshot Cisco UC components (CUCM, CUC, UCCE/X, routers, switches), ensuring a resilient and scalable VoIP infrastructure.

Deployed and supported Genesys PureCloud, including IVR/call flow design, configuration, and user management, leading to streamlined agent workflows and faster issue resolution.

• Hexaware Technologies Jun 2019 – May 2022

Network Engineer India

Designed and deployed enterprise Cisco Unified Communications solutions including CUCM, CUC, and CER, enhancing communication efficiency and reducing downtime.

Led capacity planning and deployment of CUCM clusters, integrated LDAP with Active Directory, and implemented emergency call routing for business continuity.

Monitored and analyzed network and UC system performance using Cisco Prime, Wireshark, and SolarWinds, identifying and resolving issues proactively to maintain QoS standards.

Optimized system performance through custom Java-based tuning scripts, improving operational throughput and reducing latency.

Delivered end-user training and Tier 2/3 technical support for Cisco UC products, resulting in improved user adoption and a 30% drop in support tickets.

EDUCATION

• Saint Peter’s University Sep 2023 - May 2025

Master of Business Analytics USA

• Jawaharlal Nehru Technology University Mar 2017 - Sep 2021 Bachelor of Technology, Electronics and Communication Engineering India

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