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Julien CastelJC

Julien Castel

Network and System Administrator, Consultant

€450/day
Cholet, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

IT & Cybersecurity expertise dedicated to educational institutions and EdTech.

Network administrator in a vocational high school, I now assist training organizations (CFA, private schools, training providers) in modernizing and securing their digital infrastructure. My approach is twofold: to ensure robust technology while supporting educational continuity.

- My areas of intervention (100% Remote)
Audit & Strategy: Analysis of your network configurations (high-density Wi-Fi, VLAN segmentation) and recommendations for your digital master plans.

Security & Compliance: Implementation of filtering solutions, traffic security, and support for GDPR compliance in schools.

Fleet Management (MDM): Remote administration of your mobile device fleets (Tablets) via Jamfschool

- Methodology & Remote Work
Accustomed to managing critical infrastructures remotely, I guarantee fluid and secure collaboration:

Secure Access: Interventions via VPN, SSH, or centralized management consoles.

Proactive Communication: Project monitoring via Teams, Slack, or Zoom with rigorous technical documentation at each stage.

Pedagogy: Translating technical challenges into levers for success for your teachers and learners.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Lycée Professionnel La Providence
    Educational Digital Consultant & Network Administrator
    EDUCATION AND E-LEARNING
    February 2019 - Today (7 years and 4 months)
    Cholet, France
    Technical and pedagogical expertise serving an institution with 800 students and 100 teachers.

    Main missions:

    Infrastructure & Network: Design and optimization of a high-density network (Wi-Fi, VLAN, Routing) adapted to school constraints.

    Security & Compliance: Implementation of filtering solutions (Stormshield), access security, and GDPR management (student data).

    Fleet Management (MDM): Deployment and administration of mobile fleets (iPads) for mobile classrooms.

    Pedagogical Support: Advice to management on digital investments and training teachers in collaborative tools (ENT, Teams).

    Result: Guarantee of optimal educational continuity and a secure digital environment.
    Stormshield Educational Engineering E-learning Windows Server SEO Training
  • INDEPENDANT
    Educational Digital Transformation Consultant | Infra & Cloud Expert
    CONSULTING AND AUDITS
    January 2026 - January 2026
    Strategic and technical support for educational institutions and EdTech.

    Specializing in digital infrastructure in education, I assist you remotely in modernizing your tools and securing your networks. My expertise is based on concrete management of heterogeneous, high-density environments.

    My 100% remote services:

    Audit & Master Plan: Analysis of your existing infrastructures (Wi-Fi, servers, security) and budgeted development recommendations.

    Mobility Solutions (MDM): Remote configuration and administration of your tablet or PC fleets (Intune, Jamf).

    Server & Cloud Expertise: Installation and optimization of virtualization servers (Proxmox, VMware) and outsourced backup solutions.

    Creation of AI training for your pedagogical teams based on your needs.

    Training Engineering: Creation of materials and webinars for your pedagogical teams on collaborative tools.

    Remote service guarantee: Secure intervention via VPN/SSH, fluid communication (Teams/Zoom/Slack), and rigorous technical documentation provided for each mission.

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Education

  • Advanced Technician Certificate in System and Network Administration
    AIFCC CAEN
    2004

Skill set

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