Freelancer profile translated to English.
Back to original languageAbout Etienne
With 14 years of engineering experience, I am a network and security architect with strong experience in carrier networks and large enterprise networks. After obtaining my engineering degree in Information Systems and Telecommunications from the University of Technology of Troyes (UTT), I first worked as a network operations engineer at TOTAL, then as a network architect in two departments of the operator Orange, working on network deployment, operation, and security projects. In 2018, I joined the architecture department at e-SNCF to support network transformation and modernization projects. Since 2022, I have worked at EDF on Secure LAN and SD-LAN architectures, then at Odigo on the security of service platform architectures in data centers, and on migration and support operations.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- ODIGONetwork and Security ArchitectTELECOMMUNICATIONSJanuary 2024 - October 2025 (1 year and 9 months)Boulogne-Billancourt, FranceAs part of a backbone migration, I was responsible for:
- Auditing the network and service platforms and ensuring compliance before migration
- Proposing migration scenarios based on each client's specificities
- Leading technical workshops with clients to gain their buy-in for the new design
- Updating architecture documents (HLD, LLD, operational documents)
- Writing roadmaps and operational procedures for client migrations
- Leading migration preparation meetings with various stakeholders
- Assisting engineers during migration operations
Technical Environment:- Cisco, Juniper, Fortinet, Brocade, F5, VMWare, AWS // BGP, EVPN/VXLAN, OSPF, VRF, VLAN, MPLS, VDOM
- SNCFNetwork and Security ArchitectTRANSPORTATIONJanuary 2018 - September 2022 (4 years and 8 months)Saint-Denis, FranceWithin the Collection Network department and the Network and Security Architecture department, I was responsible for the following:
- Designing and deploying the Telecom Hub interconnecting various entities to data centers and the internet
- Supporting business units in their secure interconnection needs
- Updating network repositories: HLD, LLD, traffic matrix.
- Designing and deploying Enterprise LAN and Wifi networks for sites
- Designing and deploying public Wifi networks (free Wifi in stations)
- Auditing site networks in various group entities and recommending compliance measures
- Supporting operations in resolving critical problems and incidents
- Working on Proofs of Concept (POCs) with vendors to validate new solutions aligned with medium and long-term evolution roadmaps (SD-WAN, SD-LAN, ZTA...)
- Designing training materials for network technicians
- Leading training workshops
Technical Environment:- HP, Aruba, Cisco, Huawei, Juniper, Fortinet
- BGP, OSPF, Ripv2, VXLAN, VRF, VLAN, MPLS L3VPN, QoS, SD-WAN, SD-LAN, CAPWAP, EoGRE
- Zero Trust Architecture
- Orange/DTSI/DIFIP Network ArchitectTELECOMMUNICATIONSJanuary 2016 - January 2018 (2 years)Bagneux, FranceWithin the IP Backbone Architecture department – MID, I carried out the following activities:
- Contributed to the design and deployment of the new data center infrastructures:
- Selection and qualification of network equipment, OS updates
- Writing infrastructure design documents, architecture documents (HLD and LLD)
- Managing visibility solution vendors – managing product and software roadmaps, qualifying and validating equipment, optimizing OPEX and CAPEX costs
- Integrating taps, IDS, IPS into the network infrastructure for SOC needs
Technical Environment:- Cisco, Juniper, Gigamon, Fortinet
- BGP, OSPF, ISIS, EIGRP, Ripv2, VRF, VLAN, MPLS, QoS, L3VPN
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Education
- Engineer in Information Systems and TelecommunicationsEngineering School – University of Technology of Troyes (UTT)2011Ingénieur en Système d'information et télécommunications
- Master in Computer ScienceUniversity – University of Yaoundé 12007Master en informatique
Certifications
- AWS Solution Architect AssociateAWS Solution Architect Associate2021
- CISSPISC22024