Sairam Vardha
Network Administrator • Denver, CO • s************@gmail.com • 910****971 • linkedin.com/••••• • drivetube.ai/•••••
Professional Summary
Network Engineer with 4+ years of experience designing, deploying, and supporting enterprise and data-center networks. Skilled in campus and data center architecture, EVPN/VXLAN, routing (BGP/OSPF), SD-WAN, next-generation firewalls, load balancers, and cloud networking across Azure, AWS, and GCP. Proven ability to lead datacenter migrations, implement secure remote access, automate operational tasks with Python and Ansible, and maintain high-availability environments using Cisco ACI, Arista CloudVision, Nexus, and Juniper platforms.
Technical Skills
Programming Languages: Python,PowerShell,Shell scripting
Cloud and DevOps: Microsoft Azure,Amazon Web Services AWS,Google Cloud Platform GCP,VMware ESXi,vCenter,NSX,vSAN,Ansible,Linux
Data and Analytics: Cisco ACI,Cisco DCNM,OpenDaylight,EVPN fabrics
Tools and Methodologies: Cisco ISR 800 series,Cisco ISR 1100 series,Cisco ISR 4000 series,Cisco ASR 1000 series,Cisco ASR 9000 series,Juniper MX series,Cisco Catalyst series 2900,3500,3560,3750,4500,6500,8300,9600,Cisco Nexus 5000,7000,9000,Arista CloudVision,Arista 7000,7500,7800 series,Robot Framework,Windows Server
Routing and Switching Protocols: BGP,OSPF,EIGRP,RIP,VRF,MPLS,VXLAN,EVPN,HSRP,VRRP,GLBP,802.1Q,STP,RSTP,vPC
Firewalls and Network Security: Palo Alto Networks,Fortinet FortiGate,Cisco ASA,Juniper SRX,Checkpoint,IDS,IPS,IPsec,SSL VPN
Load Balancing: F5 LTM,F5 GTM,Citrix NetScaler,Citrix XenApp load balancing
SD-WAN and WAN Optimization: Cisco Viptela SD-WAN,Versa SD-WAN,Silver Peak WAN accelerators
Network Management and Monitoring: Splunk,SolarWinds,Wireshark,Cisco Prime,NetFlow,NPM,Infoblox
Security Access and Identity: Cisco ISE,TACACS+,RADIUS,ForeScout NAC,Azure AD SAML,SCIM
Network Operating Systems: Cisco IOS,Cisco NX-OS,JunOS,PAN-OS
Documentation and Collaboration: Microsoft Visio,Microsoft Office,SharePoint,Microsoft Project
Work Experience
Western Union
Denver, CO
Network Administrator
april 25 – present
Supported enterprise payments and money-transfer network operations; worked on datacenter and campus network refresh, cloud networking, and security for Western Union's global infrastructure.
Tech Stack: Arista CloudVision, Cisco ACI, Cisco Nexus, ASR, Juniper MX, EX, SRX, F5 LTM, Azure, GCP Cloud Functions, ESXi, NSX, vSAN, Python, Cumulus, Juniper Mist, Aruba, Citrix NetScaler, Blue Coat Proxy
- Designed and deployed a 100G Arista spine-leaf environment using EVPN/VXLAN and Arista CloudVision to modernize datacenter fabric and enable high-bandwidth transaction flows across core locations.
- Led migration from legacy Cisco switches to Cisco ACI and Arista CloudVision fabrics, implementing VXLAN tunneling and DCNM orchestration to minimize downtime during cutovers.
- Configured and operated Juniper MX and EX series routers and Cisco Nexus/ASR platforms for OSPF and BGP peering, resolving complex routing convergence issues and stabilizing inter-datacenter paths.
- Implemented Azure HA/DR patterns and defined cloud security policies; integrated Azure AD SAML authentication and SCIM provisioning for Zscaler to centralize identity-based access controls.
- Built and tuned QoS and traffic engineering policies across Cumulus and Cisco devices to prioritize payment and application traffic; used F5 Analytics and health monitors to ensure application availability.
- Automated audit and troubleshooting workflows by developing Python/Linux scripts to gather device state, generate layer-2 error reports, and validate configuration compliance across the estate.
Virtusa
India
Technical Support Engineer
aug 21 – feb 23
Provided enterprise network and security operations support for client environments; participated in campus redesign, NAT/VPN configuration, and proactive monitoring deployments.
Tech Stack: Blue Coat, Infoblox, Syslog, Cisco routing and switching, IPsec VPN, Microsoft Proxy Server, VLANs, Trunking, OSPF, BGP
- Delivered L2/L3 support for enterprise LAN/WAN environments, troubleshooting connectivity and routing issues for OSPF/BGP deployments and restoring production services within SLA windows.
- Configured NAT (static/dynamic/overload), IP addressing schemes and client VPNs (IPsec) to enable secure remote access and address translation for enterprise applications.
- Assisted in campus LAN redesign including VLAN segmentation, trunking, inter-VLAN routing, and IP telephony readiness to improve fault isolation and traffic management across departments.
- Deployed a centralized Syslog server and integrated Infoblox IPAM to enable proactive monitoring, log retention, and faster incident triage for network events.
- Managed proxy and content-filter services with Blue Coat and Microsoft Proxy Server; implemented DNS and DHCP orchestration and troubleshooting for client networks.
- Implemented security controls and performed routine audits; documented procedures and provided knowledge transfer to client teams to ensure operational continuity.
Education
Jawaharlal Nehru Technological University, Hyderabad
Bachelor of Computer Science • Hyderabad, India
Indiana Institute of Technology
Master of Information Systems • Indiana, USA
Certifications
CCNA — Cisco
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