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Kamel BoumazaKB

Kamel Boumaza

Network and Security Architect

€700/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kamel

Network & Security Architect – Senior (20 years of experience) working in critical environments (industry, OT/IT, datacenters, cloud, multi-site). Specializing in network and security architecture design, advanced cybersecurity, and managing international projects with high stakes (EMEA/US/APAC).
Expert in complex transformations: MES, carve-out, multi-hub SD-WAN, SASE/SSE/ZTNA, Zero-Trust / Purdue / ISA-95 segmentation, cloud migrations (Azure, GCP, Aliyun), WAN optimization, security hardening, and post-audit remediation. Expertise in modern datacenter architectures based on VXLAN EVPN, enabling network virtualization, L2/L3 extension, and advanced segmentation in multi-site and hybrid cloud environments.
Ensures consistency between performance, security, and business requirements, with a strategic and operational approach.
In-depth mastery of LAN/WAN/SD-WAN and datacenter architectures (Leaf-Spine, VXLAN EVPN), hybrid environments, and multi-vendor firewalls (Palo Alto, Fortinet, Check Point, Stormshield). Accustomed to sensitive contexts, writing HLD/LLD/DAT, and cross-functional management of teams and suppliers.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Confidentiel
    Network and Security Architect
    September 2019 - Today (6 years and 9 months)
    Design and definition of network and security architectures
    Writing of architecture documents submitted to the steering committee on the improvement and/or new network and security infrastructure.
    Management of service providers and cross-functional coordination
    Complete and autonomous development of Technical Design Documents (DAT), from requirements gathering to final validation, with all technical and functional project characteristics.
    Analysis and qualification of application audits to assess the performance and capacity of Internet/SDWAN links to support applications under real operating conditions.
    Writing of scoping notes for network and security project needs, allowing relevant entities to validate the requirements.
    Qualification and writing of budget commitment notes.
    Level 3 support for all production hardware in the technical environment.
    POC DLP Varonis/Prisma + architecture/deployment + compliance, data classification, IT/OT monitoring
    SASE architecture audit + improvement proposal (cost + functionality)
    Network and firewall audit
    Management of the global SASE architecture audit with recommendations (cost, functional coverage, compliance, ZTNA) OT compliance, ZTNA, cost, functionalities
    Compliance aligned with ISA95/NIS2 on 3 critical industrial sites
    Reduction of non-compliant traffic by 40% after NSX microsegmentation + NGFW hardening aligned with Purdue level 1-3
    Implementation and optimization of VRRP, BGP, OSPF, and MPLS on WAN/SD-WAN and datacenter architectures
    Development of post-audit remediation and hardening plans (firewall, critical flows, ACL, routing, EOL)
    Evaluation of WAN/SD-WAN infrastructure resilience within the framework of business continuity (BCP/DRP)
    Integration of Cortex XSOAR in POC for automated security incident response
    Reduction of security incident response time by 35% via Cortex
    OT compliance achieved on 3 critical plants, ISO 27001/IEC 62443/NIS2/NIST audits
    Network architecture Firewalls
  • LVMH
    Network and Security Architect/Engineer
    September 2019 - December 2023 (4 years and 3 months)
    Operator entry point to study line requirements (MPLS + Internet). Implementation with associated technical architecture of SD WAN and its deployment. Security requirements study for the implementation of new flow rules and layer 7 security. Migration of VPN users to the new infrastructure with all associated tests for validation. Migration of partner VPNs with associated tests to the new infrastructure. Study and implementation of a new Zscaler SAAS proxy tenant to secure outgoing user and server traffic.
    Project management/monitoring and implementation of technical exchanges with service providers and partners Creation of technical architecture documents.
    Creation, update, and correction of architecture documents (HLD, LLD)
    Management of Level 3 incident resolution received by the operations center with a specialization in network and security perimeter incidents (On Premise and Cloud)
    Analysis and resolution of issues on network and security perimeters
    Project execution: architecture, technical engineering, participation in deployments, migrations, and application go-lives
    Implementation/Configuration on Azure and GCP of Expressroute, Virtual Network, Virtual Network Gateway, Application Gateway, NSG, Load Balancer, Firewall, Peering, Route, and BGP
    Contact point for managing interconnections to the ATT/LVMH MPLS MAN
    Deployment of Meraki, Fortinet, Palo Alto, Aruba Wifi, and Switches at remote sites (stores and factories)
    Renewal and integration of new certificates
    BGP VPN configuration between Palo Alto and Azure
  • « Thales » Elancourt
    Network and Security Architect/Engineer
    January 2017 - September 2019 (2 years and 8 months)
    Architecture, analysis, study, and technical expertise addressing various issues related to current environments and/or the deployment of new environments worldwide. Project to migrate to a new Nexus 7k/5k/2k infrastructure in BGP with all related issues concerning the integration of new Juniper Firewalls Migration and integration of Infoblox DNS/DHCP/IPAM appliances
    Creation of technical architecture documents.
    Update and correction of architecture documents. Management of Level 3 incident resolution received by the operations center with a specialization in network and security perimeter incidents Analysis and resolution of issues on network and security perimeters Communication with the client on project progress and ongoing incidents Project execution: technical engineering, participation in deployments, migrations, and application go-lives, organization of knowledge transfer on the technical environment listed below. Architecture, configuration, administration, intervention with industrial OT suppliers on various issues, evolution of factory infrastructures on the network and security side.
    Technical Environment LAN, MAN, WAN: F5 LTM/ASM LoadBalancer Cisco NEXUS 9K, 7k, 5K, 2K (VDC, VPC, Fabric-Path, FC) Cisco ASR9K Cisco Catalyst 6500/6800 in VSS, 3560, 3750, 2960 Juniper MX-Series Stormshield, Fortinet, Palo Alto, Juniper SRX and SSG, Forcepoint, ASA Firepower Proxy Bluecoat Wifi WLC Cisco Juniper SA, Riverbed Cisco ISE DNS (Infoblox, Efficient IP, UNIX) Tufin

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Education

  • Master 2 Systems, Networks, and Security
    ESGI
    2008

Skill set (50)

Categories

  • Other