Network Engineer II
Walmart · Chennai · 5+ yrs experience · Posted 2026-07-19
Tech stack: Ansible, Python
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About the role
The Network Operations L2 team is responsible for supporting and maintaining Walmart’s large-scale global network infrastructure across stores, distribution centers, data centers, WAN, and core infrastructure services. The team ensures operational excellence, high availability, rapid incident response, and continuous improvement across mission-critical enterprise networking environments.
The team supports:
Store Networks (Wired & Wireless)
Distribution Center (DC) Networks
Data Center Networks
Global WAN (GWAN)
DDI Infrastructure (DNS, DHCP, IPAM)
Responsibilities:
- Network Operations & Incident Management
- Provide L2 operational support for Walmart’s global network infrastructure including: Store wired and wireless networks Distribution Center networking Data Center networking GWAN connectivity DDI platforms (DNS, DHCP, IPAM)
- Store wired and wireless networks
- Distribution Center networking
- Data Center networking
- GWAN connectivity
- DDI platforms (DNS, DHCP, IPAM)
- Troubleshoot and resolve network incidents impacting business-critical services.
- Participate in major incident management (MIM) calls and support technical resolution activities.
- Perform root cause analysis (RCA) and implement corrective/preventive actions.
- Collaborate with L1 operations teams for escalations and knowledge transfer.
- Technical Support
- Support routing, switching, wireless, WAN, and DDI technologies.
- Assist with infrastructure upgrades, migrations, deployments, and operational readiness activities.
- Review network changes and support operational compliance and risk mitigation.
- Work closely with architecture, engineering, security, and cloud teams to support new initiatives.
- Reliability & Continuous Improvement
- Drive operational excellence through proactive monitoring, observability, and performance optimization.
- Identify recurring issues and contribute to long-term fixes to improve network stability.
- Develop operational runbooks, SOPs, troubleshooting guides, and knowledge articles.
- Participate in on-call rotation and support 24x7 production operations when required.
- Automation & Innovation
- Support and enhance automation solutions using in-house automation tools.
- Improve operational efficiency through automated remediation workflows.
- Support telemetry, monitoring, and analytics initiatives for enhanced network visibility.
- Contribute to process standardization and modernization initiatives.
Qualifications:
- Bachelor’s degree in computer science, Information Technology, Engineering, or related field.
- 3–5 years of experience in enterprise network engineering and operations.
- Strong hands-on experience in: Enterprise routing and switching Wireless networking technologies WAN/SD-WAN environments Data Center networking DNS, DHCP, and IPAM solutions
- Enterprise routing and switching
- Wireless networking technologies
- WAN/SD-WAN environments
- Data Center networking
- DNS, DHCP, and IPAM solutions
- Experience with technologies and platforms such as: Cisco Juniper Versa Infoblox
- Infoblox
- Strong understanding of: TCP/IP BGP, OSPF, EIGRP VLANs, STP, HSRP/VRRP VXLAN/EVPN WLAN architectures DNS/DHCP/IPAM
- BGP, OSPF, EIGRP
- VLANs, STP, HSRP/VRRP
- VXLAN/EVPN
- WLAN architectures
- DNS/DHCP/IPAM
- Experience troubleshooting enterprise network environments.
- Basic to intermediate automation/scripting experience using Python, Ansible, REST APIs, or equivalent tools.
- Strong analytical, troubleshooting, and problem-solving skills.
- Excellent verbal and written communication skills.
- Experience supporting retail or globally distributed enterprise environments.
- Experience with network monitoring and observability platforms.
- Familiarity with ITIL processes and ServiceNow workflows.
- Exposure to SRE practices and operational excellence methodologies.
Qualifications
- Bachelor’s degree in computer science, Information Technology, Engineering, or related field.
- 3–5 years of experience in enterprise network engineering and operations.
- Strong hands-on experience in: Enterprise routing and switching Wireless networking technologies WAN/SD-WAN environments Data Center networking DNS, DHCP, and IPAM solutions
- Enterprise routing and switching
- Wireless networking technologies WAN/SD-WAN environments
- Data Center networking
- DNS, DHCP, and IPAM solutions
- Experience with technologies and platforms such as: Cisco Juniper Versa Infoblox Infoblox
- Strong understanding of: TCP/IP BGP, OSPF, EIGRP VLANs, STP, HSRP/VRRP VXLAN/EVPN WLAN architectures DNS/DHCP/IPAM
- BGP, OSPF, EIGRP
- VLANs, STP, HSRP/VRRP VXLAN/EVPN WLAN architectures DNS/DHCP/IPAM
- Experience troubleshooting enterprise network environments.
- Basic to intermediate automation/scripting experience using Python, Ansible, REST APIs, or equivalent tools.
- Strong analytical, troubleshooting, and problem-solving skills.
- Excellent verbal and written communication skills.
- Experience supporting retail or globally distributed enterprise environments.
- Experience with network monitoring and observability platforms.
- Familiarity with ITIL processes and ServiceNow workflows.
- Exposure to SRE practices and operational excellence methodologies.
Responsibilities
- Network Operations & Incident Management
- Provide L2 operational support for Walmart’s global network infrastructure including: Store wired and wireless networks Distribution Center networking Data Center networking GWAN connectivity DDI platforms (DNS, DHCP, IPAM)
- Store wired and wireless networks
- Distribution Center networking
- Data Center networking GWAN connectivity
- DDI platforms (DNS, DHCP, IPAM)
- Troubleshoot and resolve network incidents impacting business-critical services.
- Participate in major incident management (MIM) calls and support technical resolution activities.
- Perform root cause analysis (RCA) and implement corrective/preventive actions.
- Collaborate with L1 operations teams for escalations and knowledge transfer.
- Technical Support Support routing, switching, wireless, WAN, and DDI technologies.
- Assist with infrastructure upgrades, migrations, deployments, and operational readiness activities.
- Review network changes and support operational compliance and risk mitigation.
- Work closely with architecture, engineering, security, and cloud teams to support new initiatives.
- Reliability & Continuous Improvement
- Drive operational excellence through proactive monitoring, observability, and performance optimization.
- Identify recurring issues and contribute to long-term fixes to improve network stability.
- Develop operational runbooks, SOPs, troubleshooting guides, and knowledge articles.
- Participate in on-call rotation and support 24x7 production operations when required.
- Automation & Innovation
- Support and enhance automation solutions using in-house automation tools.
- Improve operational efficiency through automated remediation workflows.
- Support telemetry, monitoring, and analytics initiatives for enhanced network visibility.
- Contribute to process standardization and modernization initiatives.