Manohar Yadav

Network Operations and Infrastructure Engineer with 12+ years of experience supporting large-scale enterprise networks, production incident response, change management, monitoring, and automation at Amazon. Strong hands-on experience with Layer 2 / Layer 3 troubleshooting,

TCP/IP, BGP, OSPF, MPLS circuits, QoS, VLAN segmentation, WAN routing, IPsec connectivity, DNS management, switch lifecycle management, firmware upgrades, wireless integration, and high-availability retail network operations across 100+ locations.

Experienced in resolving production-impacting network incidents, responding to alerts within operational SLAs, coordinating cross-functional troubleshooting, documenting best practices, and improving operational workflows. Proficient in Python, Shell scripting, Ansible, Linux,

Prometheus, Grafana, and NetBox for network diagnostics, recovery, inventory, monitoring, and incident reduction. Hands-on exposure to Cisco

Catalyst 9300/9500, Cumulus Linux switches, Dent OS switches, Juniper Mist wireless infrastructure, and large-scale infrastructure monitoring.

Network Engineer II - Amazon, Whole Foods Market Apr 2025 - Feb 2026

• Led migration of 7 Amazon Fresh stores from legacy Cumulus switches to Cisco Catalyst 9500/9300 Layer 3 switches, configuring VLANs, trunk links, routing interfaces, and high-availability switch stacks, improving network resiliency and uptime by 40%.
• Diagnosed and resolved complex Layer 2 and Layer 3 production issues across enterprise retail networks, including VLAN segmentation faults,

routing table inconsistencies, WAN path selection issues, MPLS circuit issues, and monitoring agent failures.

• Managed BGP and OSPF routing across large-scale retail infrastructure, improving WAN route propagation, circuit stability, and failover behavior.
• Supported MPLS and WAN circuits across Whole Foods Market infrastructure, troubleshooting routing, latency, failover, and provider-impacting issues to maintain production network availability.
• Monitored network health and device availability using Prometheus and Grafana dashboards, responding to alerts for routing, interface, circuit, and device health issues within operational SLAs.
• Managed IPsec connectivity, DNS records, and NetBox network inventory updates to support site operations, troubleshooting, and change management workflows.
• Executed switch refreshes across 59 Whole Foods Market stores by deploying Cisco enterprise switches with standardized VLAN architecture and trunking configurations, reducing operational overhead by 25%.
• Deployed and integrated Juniper Mist wireless access points across 31 retail locations, optimizing VLAN mapping, DHCP scopes, and wireless segmentation to improve wireless performance and security.
• Collaborated with cross-functional network teams to optimize WAN circuit routing and failover strategies, using monitoring insights from Prometheus and Grafana to improve circuit reliability and bandwidth utilization by 35%.
• Built automation tools for remote command execution across network switches, accelerating recovery for devices with routing or monitoring agent failures and reducing network downtime by approximately 30%.

Network Engineer I - Amazon, Whole Foods Market Jan 2023 - Apr 2025

• Operated enterprise network infrastructure for 144+ retail stores, using Prometheus, Grafana, and NetBox to monitor network health, device availability, WAN/MPLS connectivity, inventory accuracy, and alert trends across production environments.
• Responded to recurring production network incidents involving routing loops, interface errors, device misconfigurations, DNS issues, circuit issues,

and switch health alerts.

• Analyzed WAN traffic and routing patterns to optimize infrastructure; supported downgrade of selected 10G circuits to 1G links, reducing cost by

25% while maintaining performance.

• Configured and maintained Cisco enterprise switches, performed firmware upgrades, and supported advanced troubleshooting to maintain 99.9%

network uptime.

• Automated network diagnostics and device recovery using Python scripts, reducing device recovery time from 8 hours to 30 minutes and improving operational efficiency by over 80%.
• Led Prestera network infrastructure deployment for 144 stores, managing switch provisioning, VLAN configuration, and network integration for rapid retail expansion.
• Resolved 75+ recurring network incidents monthly and contributed to process improvements that reduced incident volume by 40%.

Mula Manohar Yadav | Network Engineer II | Page 1

Support Engineer II - Amazon, Just Walk Out Technology Nov 2021 - Jan 2023

• Diagnosed and resolved LAN/WAN connectivity issues, routing inconsistencies, VLAN misconfigurations, DNS issues, and device health alerts across enterprise store networks.
• Supported IPsec connectivity, DNS management, and NetBox inventory workflows across Amazon Just Walk Out store environments, improving troubleshooting accuracy and operational visibility.
• Enhanced network monitoring workflows to proactively detect routing failures, interface flaps, and infrastructure alerts, reducing duplicate incident reports by 40%.
• Developed automation scripts to collect diagnostic data from network switches and routers, reducing incident triage and resolution time by 30%.
• Supported production operations by coordinating incident response, documenting known issues, and escalating complex technical problems to engineering teams.

Support Engineer I - Amazon, Just Walk Out Technology Feb 2020 - Nov 2021

• Provided 24x7 operational support for IHM stores as part of India's pilot team, ensuring stable technology operations and smooth production rollout.
• Reduced monthly ticket volume by 85%, from 1,000 to 150, through process improvements, automation initiatives, and self-service troubleshooting workflows.
• Created and standardized incident response documentation, improving consistency and speed during large-scale technical incidents.
• Delivered reliable production support across diverse store technologies, maintaining over 99% system uptime and improving user satisfaction.
• Partnered with operations and engineering teams to resolve escalations, improve troubleshooting workflows, and strengthen incident response quality.

Sr. Digital Support Associate - Amazon, D2AS Jun 2015 - Feb 2020

• Delivered technical support for Kindle hardware, software, account, synchronization, and connectivity issues, consistently achieving customer satisfaction above 90%.
• Provided Tier 1 and Tier 2 desktop and connectivity support across hardware, software, and network-related issues.
• Maintained accurate ticket documentation and achieved a 95% first-contact resolution rate.
• Collaborated with engineering teams to escalate, track, and resolve product defects and software issues.
• Built strong operational discipline in customer communication, ticket handling, escalation management, and issue documentation.

Customer Support Associate - Amazon, Retail • Joined Amazon after B.Tech graduation and supported Retail and Digital customers through email and live chat channels.

• Exceeded Calls Per Hour and Net Resolution Rate targets by an average of 15%.
• Developed a strong foundation in customer communication, problem resolution, ticket management, and service quality.

B.Tech - ECE - St Peter's Engineering College - Hyderabad

Diploma - ECE - Vasavi Polytechnic College - Kurnool