Aurélien FIRMIN

• Hands-on management of Network Operations, combining team leadership with direct technical involvement in production infrastructure. • Migration of Cisco Firepower environments to Palo Alto, including rule conversion, migration planning, change execution and troubleshooting. • Technical involvement in major data center migration and network consolidation projects based on Cisco Nexus. • Administration and troubleshooting of Palo Alto, Fortinet, Cisco, F5 and Infoblox environments. • Enterprise and data center networking: BGP, OSPF, LACP, vPC and inter-data center connectivity. • DNS/DHCP infrastructure evolution and migration to Infoblox DDI. • Technical coordination during critical production incidents and major infrastructure changes.

• Senior Network Security Engineer responsible for the operation, evolution and troubleshooting of enterprise network and security infrastructure. • Administration and troubleshooting of Fortinet NGFW environments. • Operation and evolution of Extreme Networks Fabric infrastructure. • Administration of Infoblox DDI services, including DNS and DHCP infrastructure. • Implementation of network and security changes in production environments. • Troubleshooting of complex network and security incidents and contribution to infrastructure projects.

• Security engineering assignment supporting the European Commission's perimeter security infrastructure. • Operation and troubleshooting of enterprise perimeter security services. • Administration of firewall, proxy, reverse proxy and Web Application Firewall environments. • Implementation of security changes in production environments. • Investigation and resolution of security infrastructure incidents. • Coordination with technical teams in a large-scale enterprise environment.

• Level 2 network incident management and troubleshooting. • Administration of SSL remote-access infrastructure. • Firewall administration and security troubleshooting. • Implementation of an IP address management solution. • Definition of standard network device configurations and normalization of the existing infrastructure. • Development of NetMRI CCS scripts to improve network infrastructure management and configuration consistency.

Responsible for the redesign and evolution of the company's IT infrastructure to support business growth. • Redesign of network architecture and routing infrastructure. • Infrastructure sizing and capacity planning. • Implementation and improvement of monitoring solutions. • Definition and implementation of information security policies. • Management of relationships with telecommunications providers. • Day-to-day responsibility for systems and network infrastructure.

• Design and implementation of an OSPF backbone. • Design of an L2TP aggregation infrastructure supporting more than 2,500 sites over private DSL networks. • Implementation of multi-tier network security zones. • Deployment of grid storage infrastructure. • Network operations and troubleshooting across production environments.

Sécurisation du réseau de supervision sur la plaque Nord-Est Maillage IPsec multi-site