Senior Network Engineer (WAN) - GCS

About the role

EY's Global Connectivity Solutions (GCS) team is hiring a Senior Network Engineer (WAN) in Kochi, India. The role executes vulnerability remediation, lifecycle management, software upgrades and technical change activities across enterprise WAN infrastructure, providing technical leadership for deployment, complex troubleshooting, change execution and service restoration. It works with Network Engineering, Network Operations, Information Security, Change Management, Outage Management, product owners, vendors and service providers.

Key responsibilities

• Drive vulnerability remediation across Versa SD-WAN, Cisco routing and switching and WAN connectivity platforms
• Perform software and firmware upgrades on Cisco ISR and ASR routers, Catalyst platforms, Versa SD-WAN controllers and branch edge devices
• Review vendor security advisories, software recommendations, defects and EOS/EOL notices and turn them into remediation activities
• Keep WAN devices compliant with approved software versions, security standards and remediation timelines
• Plan and execute code upgrades, patches, configuration updates, platform remediation, technology refresh and WAN modernization
• Run pre-upgrade assessments, compatibility reviews, risk analysis and post-upgrade health checks
• Create Change Requests, Change Tasks, implementation records, approvals and closure documentation, and present changes at CAB reviews
• Coordinate testing, outage planning, deployment execution, stabilization and post-implementation validation
• Serve as technical lead for incidents, outage calls and major incident bridges, performing root cause analysis
• Support Problem Management by analysing recurring issues and driving permanent fixes
• Lead remediation waves, upgrade deployments and network improvement initiatives, and guide Associate and Senior Associate engineers

Required profile

• Strong hands-on knowledge of Versa SD-WAN, including Versa Director and Analytics, overlays, underlay connectivity, traffic steering and branch edge operations
• Expertise in Cisco routing technologies (ISR and ASR platforms) and Cisco switching platforms supporting WAN connectivity
• Advanced understanding of BGP, OSPF, routing policies, redundancy, VPN services, QoS and WAN failover
• Experience troubleshooting WAN links, ISP circuits, branch connectivity and SD-WAN fabric health