Varun Singh
Bengaluru,Karanataka
Summary
Senior Network Engineer with 6+ years of experience specializing in network automation, validation, and large-scale data center networking. Proven expertise in building Python and Bash-based automation frameworks, designing lab/testbed environments, and performing protocol validation (BGP, OSPF, TCP/IP) across Cisco, Arista, and Juniper platforms.
Strong background in packet-level analysis, network reliability, and automated testing workflows, with a focus on improving infrastructure scalability, performance, and deployment confidence in hyperscale environments.
Overview
6
6
years of professional experience
1
1
Certification
Work History
AI Cloud Infrastructure Engineer
Nvidia
Bengaluru, India
10.2025 - Current
- Designed and implemented Python-based network automation and validation workflows for Arista EOS leaf-spine fabrics across multi-cloud environments
- Built automated validation pipelines for BGP, VXLAN-EVPN, and TCP/IP behavior to ensure production readiness
- Developed network test automation scripts (Python + Bash) to validate configuration, protocol convergence, and forwarding behavior
- Set up and debugged lab/testbed environments to reproduce production issues and validate fixes across Cisco, Arista, and Juniper devices
- Performed deep packet-level validation using Wireshark/tcpdump to troubleshoot latency, packet loss, and TCP issues
- Automated telemetry validation and health checks, reducing manual effort and improving deployment confidence
- Contributed to network hardware validation and platform onboarding for new infrastructure deployments
High-Touch Technical Consulting Engineer
Cisco Systems
Bengaluru, India
12.2020 - 10.2025
- Led network validation and troubleshooting for large-scale Tier-0 enterprise networks using BGP, OSPF, MPLS, and VXLAN
- Built Python automation tools for protocol validation, diagnostics, and network state verification
- Performed control-plane and data-plane validation across Cisco IOS, NX-OS, and IOS-XR platforms
- Reproduced customer issues in lab environments for deep validation and root cause analysis
- Conducted packet-level analysis of TCP/IP and routing protocols to validate behavior and performance
- Worked across multi-vendor environments (Cisco, Arista, Juniper) ensuring interoperability and stability
Project Engineer - Network Operations
Wipro Limited
Chennai, India
11.2019 - 11.2020
- Supported MPLS/BGP/OSPF network operations and validation ensuring SLA compliance
- Assisted in hardware-level troubleshooting and physical network setup (optics, cabling, devices)
- Performed network monitoring, alert validation, and RCA using SNMP, syslogs, and monitoring tools
Education
Bachelor of Technology - Computer Science & Engineering
Dr APJ Abdul Kalam Technical University
Ghaziabad08.2019
Skills
Network Automation & Frameworks:
Python (automation frameworks, validation, parsing), Bash/Shell scripting, CI/CD concepts, workflow automation
Protocol Validation & Networking:
TCP/IP, BGP, OSPF, MPLS, VXLAN-EVPN, IPv4/IPv6, control-plane & data-plane validation
Lab & Testbeds:
Network lab setup, multi-vendor testbeds (Cisco/Arista/Juniper), failure simulation, protocol testing
Platforms:
Cisco (IOS, NX-OS, IOS-XR), Arista EOS, Juniper SRX, Linux
Observability & Analysis:
Wireshark, tcpdump, SPAN/ERSPAN, telemetry validation, SNMP, logs & metrics
Certification
- Cisco Certified Specialist (CCNP) - DevNet
- Cisco Certified Specialist (CCNP) - DCCOR
Custom Section
www.linkedin.com/in/varun-singh-175721142
Timeline
AI Cloud Infrastructure Engineer
Nvidia
10.2025 - Current
High-Touch Technical Consulting Engineer
Cisco Systems
12.2020 - 10.2025
Project Engineer - Network Operations
Wipro Limited
11.2019 - 11.2020
Bachelor of Technology - Computer Science & Engineering
Dr APJ Abdul Kalam Technical University