Walid Ben Bella

Mission:

- Led the redesign of firewall policies for VLAN routing across multiple Data Centers, optimizing security and performance.

- Contributed to the deployment of 8,000+ network devices across France, ensuring seamless integration and minimal downtime.

- Secured traffic flows for over 800 sites using clustered Fortinet firewalls, centrally managed via FortiManager, guaranteeing zero production disruption.

- Managed the FTTO deployment across the retail network, overseeing both technical integration and project coordination to ensure efficient rollout.

- Provided Level 3 support for internal users and external partners, including video surveillance (Sotel) and building automation (Eficia).

- Led the technical aspects of fiber tenders, acting as the primary technical reference for Fnac Darty, ensuring alignment with business needs.

- Designed and implemented complex infrastructure solutions tailored to the group’s needs, covering VIP connectivity, advanced routing, multicast, high availability (HA), and SNMP monitoring.

- Redesigned and standardized Fortinet configurations via FortiManager by restructuring templates and integrating a new security rule framework, ensuring clean, structured, and tailored policy packages while reducing human errors by 40%.

- Developed and configured centralized policy packages on FortiManager to unify and streamline firewall rules across diverse IT environments.

- Automated on-premises network installations using Python, integrating custom configurations to cut deployment time by 50%.

- Implemented advanced security protocols across network infrastructure to safeguard sensitive data and ensure compliance with security standards.

- Overhauled and standardized documentation and processes for both support and RUN teams, improving operational efficiency and knowledge sharing.

Safran Ceramics-Safran SAE – Safran Brussels (Campus LAN/Datacenter environment)

-Refreshed LAN architecture with vPC on C9600 and SWV on C9500

-Performed a network audit to ensure compliance with technical specifications and cabling standards

-Updated outdated documentation and provided technical recommendations

-Deployed, configured, and racked Core Nexus C9410, Cisco C9300, and C9500 ( over 50+ équipement for the new warehouse of Safran)

Calderys (Worldwide carve-out environment)

-Led the network migration during the carve-out from Imerys to Calderys for le LAN scope

-Managed LAN (Cisco), WiFi (Meraki + Cisco), ISE, and Palo Alto environments

-Migrated and configured new switches and access points

-Developed WiFi templates to streamline deployments

-Provided Level 3 support

-Created network architecture diagrams for each migrated site

-Updated network inventory

-Offered security recommendations based on identified vulnerabilities, standardized site architectures, and deployment procedures (LAN/WLAN on Meraki scope)

-Conducted knowledge transfer sessions with the client team

Thales (Data Center – WiFi project)

-Contributed to the WiFi implementation for the SENS project in Thales' data center using FortiAP

-Provided expertise and recommendations on WiFi architecture and configuration

-Collaborated with the client to optimize network performance and security

-Delivered tailored technical advice to ensure the solution aligned with Thales' specific needs

- N3 support

- Incident management using Landesk

- Automation of modification, deletion, addition of configuration tasks on network equipment with Python/Powershell/API

- Scripting with TCL for Fortigate and python/API

for switch and access point Meraki

- Migration of ATM routers to GE in collaboration with OCWS

- Refinement of policies by learning on firewalls with the Firewall Analyzer tool

- Configuration and customization of local server web page using meraki API for FnacDarty needs

- Creation of a graphical interface and automation of the creation of firewall templates according to the different architectures/versions

-Migration from MPLS architecture to SD-WAN

-POC new architecture to meet the new needs of small warehouses

-POC SASE

Environment : FW fortinet, switches cisco Catalyst and Meraki, Access point Meraki