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Kevin LagrangeKL

Kevin Lagrange

Systems & Networks Consultant | L3 Support

€560/day
8 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kevin

Hello,

I offer my diverse and varied skills to your company.
Seriously, I have been working in IT for over 9 years and have already completed several assignments for various entities.

. IT Audit / Administration / Maintenance
. AD Audit / Remediation and Maintenance
• Windows Server deployment and migration
• Windows Server and Linux systems administration
. Entra ID Administration
• Fortinet Administration (VPN, Wi-Fi, rule configuration) Switching - VLAN / LAG
• On-prem to Azure Cloud lift and shift transition and migration

Based in Île-de-France, available for assignments in Lyon, Montpellier, and remotely.
  • French

    Native or bilingual

  • English

    Conversational

Can work on-site
Paris (up to 50km), Montpellier (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Nantes (up to 50km)

Experience

  • AUTODISTRIBUTION
    Systems and Networks Consultant
    MECHANICAL ENGINEERING
    June 2025 - Today (1 year and 2 months)
    Chilly-Mazarin, France
    Technical Skills & Achievements

    Active Directory / Domain Controllers
    Migration of 7 domains:
    DC Windows Server 2008 → 2019
    DC Windows Server 2016 → 2022
    Installation of 2019/2022 VMs and addition of AD DS roles (additional controllers)
    SYSVOL FRS → DFSR Migration
    DC Promotion/Demotion and FSMO transfers (Forest-wide & Domain-wide)
    Domain controller Re-IP / Decommissioning of 2003 & 2008 servers

    Advanced Active Directory Administration
    Configuration of two-way Forest Trust, Conditional Forwarders & DNS Forwarders
    AD security with Quest Change Auditor
    AD Hardening with PingCastle, Semperis Purple Knight & Forest Druid

    Messaging / Microsoft 365
    IMAP → Microsoft 365 migration project for approximately 100 mailboxes
    Use of BitTitan (planning, piloting, and migration monitoring)
    Entra ID Administration + Microsoft Graph Usage

    VMware vSphere 7.x to 8.0 Upgrade Project
    Migration of vSphere 7.3 → vSphere 8.0 on the virtualization infrastructure
    Verification and compliance check of the VMware compatibility matrix (HCL): servers, drivers, firmwares, RAID/NIC controllers
    Complete update of vCenter Server to 8.0 (prerequisites, compatibility, backups, upgrade procedure)
    Upgrade of ESXi hosts to VMware ESXi 8.0 via vSphere Lifecycle Manager (planning, DRS switchover, maintenance, upgrade)
    VMware vSAN Update
    Update of the vSAN disk format using the RVC tool
    VSphere Distributed Switch Update
    Validation of critical service operation: vMotion, DRS, HA, Storage vMotion, ESXi Clusters and datastores
    Business continuity plan management: possible rollback, configuration snapshots, vCenter and host backup
    Coordination with application teams for maintenance windows and post-migration testing
    Complete technical documentation: target architecture, upgrade procedures, lessons learned
    VMWARE Windows Server Microsoft Entra ID
  • Air Liquide
    Systems Consultant
    August 2023 - June 2025 (1 year and 10 months)
    Administration of virtualised infrastructures (Nutanix – Air Liquide)

    Administration of Nutanix infrastructures across several Air Liquide sites:
    configuration of nodes, CVMs, and IPMI interfaces
    Setup and complete configuration of the virtualization infrastructure:
    management of vSwitches, VLANs, and associated network resources
    Delivery and deployment of VMs according to project and application team needs
    Migration of VMs from obsolete infrastructures to new Nutanix platforms
    Support and assistance to application teams during migration and production deployment operations
    Nutanix
  • CAFPI
    Systems and Networks Administrator
    REAL ESTATE
    October 2021 - August 2023 (1 year and 10 months)
    Ste-Geneviève-des-Bois, France
    CAFPI – Systems, Networks & Security Administrator
    Networks / Security – Fortinet & SD-WAN

    SD-WAN project: migration of branches to a Fortinet architecture
    (FortiCloud, FortiManager, FortiGate) in coordination with a service provider and the IT department
    → activation/licensing via FortiCloud, centralized configuration via FortiManager, automated scripting
    Project Management: update of the 230 FortiGates (intervention planning, branch/provider coordination)
    Creation and deployment of a Guest WiFi via FortiManager (template + script + global deployment)
    FortiEMS Administration: management of FortiClients, EMS version upgrade 6.2 → 6.4 → 7.0

    Infrastructure / Systems Projects
    Migration of the print server from Windows Server 2012 → 2019
    Implementation of a DirectAccess Djoin Offline for the Tunisia branch
    Level 3 support for the entire systems and network scope
    Application deployments via SCCM

    Cloud & Modern Workplace
    Azure Migration: migration of On-Premise servers to Azure
    (Alfun collaboration + IT department), configuration: RG, VNet, UDR…
    SCCM → Intune Migration in Co-Management, then Full Cloud switchover
    Management of updates and deployments via Intune & Endpoint Manager

    WiFi Network & Infrastructures
    Project to update Aruba access points in all branches via Aruba Airwave
    Branch network segmentation (analysis, design, and implementation)

    Security & Audits
    Complete Active Directory security audit:
    use of PingCastle and PKE_METER, audit report writing, recommendations, and hardening actions
    Correction of vulnerabilities identified via CERT, MiSc, and APSSIS on:
    FortiGate, Windows OS, VMware, network equipment…
    VMWARE Fortimanager Fortinet FortiAnalyzer Microsoft Azure

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Education

  • BACHELOR NETWORK SECURITY
    ECE TECH
    2016

Skill set

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