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Sofiane C.SC

Sofiane C.

Strategic Network & Security Architect

€650/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sofiane

Network & Cybersecurity Expert, I design, secure, and optimize WAN and Data Center architectures to ensure resilient, high-performing, and scalable infrastructures.

Specializing in Cisco (Nexus, Catalyst), Juniper, and Arista technologies, I work on complex multi-site interconnection, network segmentation, and advanced security projects in critical environments.

My skills also cover technologies like VXLAN, EVPN, BGP, and MPLS, enabling agile network management while ensuring high service availability and maximum security.

Every architecture I deploy is designed to support growth, optimize performance, and reduce the attack surface in constantly evolving environments.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • SFR
    Technical Network and Telecom Architect
    DIGITAL AND IT
    March 2019 - Today (7 years and 3 months)
    Paris, France
    Network Expertise – SFR INGENIERIE / OSM (March 2019 - Present)
    Technical Management and Expertise:
    • L3 Backbone Technical Expertise: Management of the backbone network architecture, performance optimization, and complex problem-solving on large-scale infrastructures.
    Network Architecture Studies and Design:
    • Unified MPLS / MPLS Fabric: Design and implementation of MPLS solutions to ensure the performance, security, and scalability of enterprise networks.
    • SD-WAN: Advanced expertise in Cisco (Viptela: Vbond, Vmanage, Vsmart, Vedge) and Fortinet SD-WAN solutions, optimizing wide area network management and the integration of new services.
    • PaaS Architecture: Design and implementation of cloud architecture solutions on major platforms (Google Cloud, AWS, Microsoft Azure), enabling seamless integration of cloud resources with existing network infrastructures.
    Inter-operator Interconnection and Complex Architecture:
    • Inter-operator Interconnection: Studies of network interoperability between different service providers, ensuring secure and optimized data exchange.
    • Design of Complex Architectures for Clients: Development of tailor-made solutions adapted to client needs, ensuring high-availability, high-performance, and secure networks.
    Technical Skills and Tools:
    • Network Equipment: In-depth experience with Cisco equipment (ASR9K, NCS5K, ASR1K), Cisco NFV, as well as Redback, Huawei Switch, OA, and ALU.
    • Network Performance Management: Expertise in performance analysis and implementation of solutions for large-scale network traffic management.
    • Security: Implementation of network security policies, integration of security solutions adapted to the needs of critical infrastructures.
  • BT (British Telecom)
    Network Expertise
    November 2017 - December 2019 (2 years and 1 month)
    • L3 Technical Expertise
    • Audit of client infrastructures (Michelin) in EMEA, APAC, and AMER regions
    • Documentation of client architectures HLD and LLD for Data Centers, LAN, and WAN
    • Development of infrastructure standards and technical specifications
    • Impact studies related to Michelin service migrations
    • Transition of network and security services from IBM Data Centers to BT Equinix
    • Technical support for Build and Run teams
    • Network and security incident management (Cisco, Juniper, F5, Check Point)
    • Implementation and management of Zscaler, Azure ExpressRoute, Office 365 solutions
  • ENGIE Global Markets
    Network Expertise
    July 2017 - October 2017 (3 months)
    • Technical expertise in Data Center management and optimization
    • Technical audits of ENGIE Legacy Data Centers (managed hosting)
    • Audit of partner routing infrastructures (Etrali, Bloomberg, Reuters, ENGIE Backbone)
    • Design and study of a Data Center architecture based on the Nexus 9000 platform
    • Development of HLD (High-Level Design) and LLD (Low-Level Design) architecture documents for Data Centers
    • Definition of standards and technical specifications for network infrastructure optimization

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