Ayush Varshney
Dublin
Summary
Senior Network Engineer with 7+ years of experience delivering large-scale network infrastructure in high-availability environments. Extensive hands-on experience in automating, deploying and operating AWS border-layer networks that connect cloud services, backbone infrastructure, and internet edge. Strong Ownership of end-to-end network delivery, including HLDs, BOM creation, automated deployment workflows, and production integration for hyper scale and large enterprise environments with 80K+ network devices.
Overview
8
8
years of professional experience
1
1
Certification
Work History
Senior Network Development Engineer
Amazon Web Services
03.2023 - Current
- Deployed and operated large-scale, highly available network infrastructure on commodity hardware and Juniper platforms, supporting Clos fabric architectures with 24/7 redundancy for global production traffic.
- Led end-to-end automation for global network design changes across 350+ sites; built internal framework and templates workflows, slashing manual intervention by ~95% across full deployment lifecycle.
- Executed zero-downtime chassis migrations at near-capacity border-core sites; analyzed IS-IS, RSVP-TE, and BGP to validate ECMP and prevent traffic polarization under live load.
- Automated border-layer capacity planning by integrating traffic prediction models, eliminating per-site manual analysis, saving ~2 engineer-hours biweekly, and enhancing scaling/high-availability decisions.
- Migrated live traffic from legacy to next-gen hardware with zero customer impact; tuned BGP attributes, validated shifts, and coordinated cross-team execution while enhancing automation observability via MCP for 15+ workflows per site.
Network Engineer II
Cisco Systems
07.2019 - 03.2023
- Provided end-to-end support for a large-scale enterprise network with over 20,000 devices. Installation/configuration of routers/switches, troubleshot L2/L3 WAN/LAN issues, delivered HLD diagrams/process flows.
- Handled complete lifecycle management for customer branches and campus networks.
- Partnered with clients to analyze network requirements, recommend solutions, and execute implementation plans.
- Led m-GRE to DMVPN migration across 26+ enterprise branches, designing HLD, coordinating cutovers with zero downtime.
- Standardized WAN bandwidth configurations globally via prefix-lists for major customer; automated interface config, improving traffic engineering consistency 90%.
AI/Deep Learning Intern
GE HealthCare
07.2018 - 04.2019
- Contributed to the MICT Image Generation team on Sinogram image reconstruction.
- Developed deep learning models (CNN, U-Net, GAN) using Python and Jupyter Notebooks.
- Built solutions to infer and reconstruct missing image data using Generative Adversarial Networks.
Education
M.Tech - Computer Science & Engineering
VIT University
Vellore, India | 9.15 CGPA01.2019
B.E. - Computer Science & Engineering
CCET
Bhilai, India | 80.2%04-2017
Skills
- Routing protocols: BGP, IS-IS, OSPF, EIGRP
- WAN: MPLS, MPLS-TE, LDP, RSVP-TE, SR (MPLS/SRv6), DMVPN, mGRE
- Data Center/Edge: VXLAN EVPN, IPsec, GRE, SD-WAN (Viptela)
- Cloud: AWS (EC2, VPC), S3, RDS, DynamoDB
- Automation: Python, Perl, Jinja templates, Docker, Kubernetes
- LAN & Switching: STP (PVST/RPVST/MST), HSRP/VRRP/GLBP, DHCP
Certification
- CCIE #66355 - Enterprise Infrastructure
- CCNP Routing & Switching
- AWS Certified Solutions Architect – Associate
- Cisco Certified DevNet Associate
Timeline
Senior Network Development Engineer
Amazon Web Services
03.2023 - Current
Network Engineer II
Cisco Systems
07.2019 - 03.2023
AI/Deep Learning Intern
GE HealthCare
07.2018 - 04.2019
M.Tech - Computer Science & Engineering
VIT University
B.E. - Computer Science & Engineering
CCET