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Benjamin BlochBB

Benjamin Bloch

Network and Security Systems Engineer

€500/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Benjamin

Network and security engineer, I work on IT infrastructure projects for various professional environments (SMEs, multi-site, warehouses, and industrial contexts). I support clients in the design, operation, security, and evolution of their network and system infrastructures, both remotely and through on-site interventions.

My missions cover network administration (LAN/WAN, VLAN, VRF, routing, interconnections), infrastructure security (firewalls, filtering, segmentation), and the implementation of secure remote access via VPN (SSL / IPsec). I also conduct on-site Wi-Fi audits to analyze coverage, capacity, and radio quality, and to provide concrete technical recommendations.

On the systems side, I have extensive experience in installing and administering Linux and Windows servers, deploying hypervisors, and setting up access bastions to secure administration connections. Rigorous and field-oriented, I provide clear deliverables (diagrams, documentation, procedures) and support teams through to production.
  • English

    Native or bilingual

  • Spanish

    Basic

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

Experience

  • ADWISE NETWORKS
    Network and Security Engineer
    TELECOMMUNICATIONS
    November 2025 - Today (7 months)
    Saint-Maur-des-Fossés, France

    Networks & Operations

    Design and operation of LAN/WAN infrastructures: VLAN, VRF, interconnections, routing, segmentation.
    Traffic analysis, incident diagnosis, performance optimization, and compliance.
    Infrastructure support with on-site interventions: commissioning, failovers, validation, team support.

    Security & Remote Access

    Deployment and configuration of network security solutions (firewalls, filtering, rules, hardening).
    Implementation of remote access: VPN (SSL/IPsec depending on context), configuration, testing, user support.
    Securing inter-site traffic and administration access.

    Wi-Fi & Radio Audit

    On-site Wi-Fi audit: coverage, capacity, interference, radio quality.
    Use of an audit kit for field data collection, mapping, recommendations, and corrective action planning (channels, power levels, AP density, configuration).

    Documentation & Deliverables

    Production of technical deliverables: diagrams, procedures, maps, recommendations, and intervention reports.
    Communication with stakeholders (IT, business units, operators, integrators) to secure production deployments.
    Cisco Aruba Palo Alto Netbox Wifi
  • RENAULT
    Industrial Security Correspondent
    TELECOMMUNICATIONS
    January 2023 - January 2025 (2 years)
    Guyancourt, France
    • - Management of industrial infrastructure security (IT/OT networks, servers, critical equipment)
    • - Implementation of network segmentation and system hardening (VLAN, filtering, WALLIX bastion)
    • - Deployment and administration of the WALLIX Bastion secure access gateway for IT and OT teams
    • - Incident, change, and access management within the industrial perimeter (IAM, audit, compliance)
    • - Automation of recurring tasks via PowerShell, Python, and Bash
    • - Contribution to network traffic mapping, IT/OT interconnection analysis, and architecture document writing
    • - Active participation in warehouse compliance with Renault cybersecurity requirements (SSL Policy)
    Cisco Palo Alto Wallix Scripting Linux
  • RENAULT
    Information Systems Designer
    TELECOMMUNICATIONS
    January 2022 - January 2023 (1 year)
    Guyancourt, France
    • - Administration and maintenance of RedHat Linux servers and the application layer
    • - Infrastructure monitoring via Dynatrace
    • - Participation in the modernization and security hardening of server environments
    • - Deployment of automation solutions (PowerShell/Bash/Python scripts, standardized procedures)
    • - Management of backups, restores, and disaster recovery plans
    • - Writing technical documentation, procedures, and incident reports
    WMS Dynatrace Scripting Redhat Vulnerability Management

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Education

  • Master's in Cybersecurity, Networks, and Cloud
    EFREI PARIS
    2025
  • Bachelor's in Cybersecurity and Ethical Hacking
    EFREI PARIS
    2023

Skill set

Categories