Senior Network Engineer - WAN - GCS

• Drive vulnerability remediation activities 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 supporting WAN connectivity, Versa SD-WAN controllers, branch edge devices, and supporting network infrastructure in line with approved engineering standards.
• Review vendor security advisories, software recommendations, defects, and EOS/EOL notices, and translate applicable findings into remediation and lifecycle activities.
• Ensure WAN network devices remain compliant with approved software versions, security standards, operational guidelines, and remediation timelines.
• Manage software lifecycle and platform currency for Cisco routing and switching platforms and Versa SD-WAN infrastructure.
• Plan and execute code upgrades, patch deployments, configuration updates, platform remediation, technology refresh, and WAN modernization activities.
• Perform pre-upgrade assessments, compatibility reviews, configuration validation, risk analysis, and post-upgrade health checks.
• Prepare implementation plans, rollback procedures, validation plans, technical assessments, stakeholder communications, and deployment documentation.
• Create and maintain Change Requests, Change Tasks, implementation records, approvals, technical evidence, and closure documentation in accordance with EY processes.
• Present technical changes during CAB reviews and address implementation, impact, risk, dependency, validation, and recovery considerations.
• Coordinate testing, outage planning, deployment execution, stabilization, and post-implementation validation across technical teams and stakeholders.
• Perform advanced troubleshooting of Versa SD-WAN overlays, underlay WAN connectivity, routing protocols, and enterprise routing infrastructure.
• Troubleshoot and resolve issues involving BGP, OSPF, route policies, path selection, WAN failover, VPN services, traffic steering, QoS, and application forwarding policies.
• Diagnose and resolve issues affecting WAN links, ISP circuits, SD-WAN fabric health, branch connectivity, cloud connectivity, and data center interconnects.
• Work with vendors, carriers, service providers, and internal teams to restore services and resolve complex technical issues.
• Serve as the technical lead for incidents affecting WAN infrastructure, routing platforms, SD-WAN services, and production upgrade activities.
• Participate in outage calls, major incident bridges, and technical recovery activities; perform root cause analysis and define corrective and preventive actions.
• Support Problem Management by analyzing recurring issues, identifying trends, and driving permanent technical resolutions.
• Lead assigned remediation waves, upgrade deployments, infrastructure refreshes, and network improvement initiatives.
• Coordinate testing, validation, implementation, and stabilization activities, and track technical risks, dependencies, actions, and delivery progress.
• Provide operational feedback, implementation considerations, and technical recommendations for proposed network design changes when requested.
• Maintain implementation procedures, operational runbooks, remediation documentation, software compliance records, upgrade history, and deployment outcomes.
• Identify opportunities for automation, standardization, compliance validation, monitoring, analytics, and operational efficiency.
• Provide technical guidance to Associate and Senior Associate engineers and support consistent execution of WAN remediation and lifecycle activities.

• Strong hands-on knowledge of Versa SD-WAN, including Versa Director and Analytics, SD-WAN overlays, underlay connectivity, traffic steering, and branch edge operations.
• Strong expertise in Cisco routing technologies, including ISR and ASR platforms, and Cisco switching platforms supporting WAN connectivity.
• Advanced understanding of BGP, OSPF, routing policies, route selection, redundancy, VPN services, QoS, and WAN failover.
• Experience troubleshooting WAN links, ISP circuits, branch connectivity, SD-WAN fabric health, cloud connectivity, and data center interconnects.
• Experience assessing vendor security advisories and delivering vulnerability remediation, firmware lifecycle, patching, and infrastructure upgrade activities.
• Strong troubleshooting, root cause analysis, impact assessment, and service restoration capabilities.
• Working knowledge of ITIL practices, particularly Change, Incident, Problem, Risk, and Release Management.
• Ability to prepare implementation plans, rollback procedures, validation plans, technical documentation, and CAB presentations.
• Experience coordinating production deployments, outage windows, vendors, carriers, service providers, and cross-functional stakeholders.
• Knowledge of network monitoring, observability, analytics, and automation platforms.
• Automation or scripting knowledge using APIs, Python, Ansible, or related tools is desirable.
• Strong ownership, sound technical judgement, risk-based decision making, and attention to operational safety.
• Good communication, stakeholder management, influencing, and technical leadership skills within a global matrixed environment.
• Willingness to work in a global support model, including rotational shifts and support activities across multiple time zones.
• Flexibility to support planned maintenance, production deployments, software upgrades, vulnerability remediation, and incident recovery outside regular business hours when required.
• Ready to travel when required and able to collaborate effectively with globally distributed teams, vendors, service providers, and stakeholders.

Bachelor's degree in Computer Science, Information Technology, Engineering, Telecommunications, or a related technical discipline

Minimum of 7-10 years of experience in enterprise WAN network engineering, SD-WAN, routing and switching, lifecycle management, or related network technology support.

CCNP Enterprise preferred; CCNA required.

Versa certification and ITIL v4 are value adds.

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