Senior Network Engineer

About Capgemini

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion.

Role Description

Responsibilities

• Act as the senior technical escalation point for complex Wireless, Cisco ISE, and Cisco Meraki incidents within a global production environment.
• Troubleshoot and resolve advanced wireless connectivity issues involving Cisco Catalyst 9800 Wireless Controllers, Access Points, SSIDs, RF optimization, roaming, VLANs, DHCP, DNS, authentication, and performance degradation.
• Provide expert-level support for Cisco ISE services, including 802.1X authentication, RADIUS, TACACS+, MAB, policy enforcement, authorization, and access control troubleshooting.
• Utilize Cisco Catalyst Center (DNAC) assurance and monitoring capabilities to perform advanced diagnostics, root cause identification, and service optimization.
• Analyze logs, packet captures, authentication flows, and network traces to identify and resolve complex technical issues.
• Plan and execute firmware upgrades, software updates, configuration changes, and remediation activities while minimizing operational risk.
• Participate in P1/P2 and Major Incident bridges, leading technical troubleshooting efforts and coordinating recovery actions across Network, Security, Cloud, Workplace, and Infrastructure teams.
• Provide timely technical updates, contribute to Root Cause Analysis (RCA) documentation, and recommend preventive and corrective actions to improve service stability.
• Manage incidents, service requests, problems, and changes through ServiceNow, ensuring accurate documentation and adherence to ITIL processes.
• Prepare and implement production changes, including risk assessments, implementation plans, validation procedures, and rollback strategies.
• Support a global 24/7 operational model through shift-based coverage, on-call participation, and structured operational handovers.
• Mentor and coach L1/L2 engineers, providing technical guidance, knowledge transfer, and troubleshooting best practices.
  
  

Experience & Qualification