Freelancer profile translated to English.
Back to original languageAbout Samir
💻 System & Network Administrator | Expert in IT Infrastructure, Security, and Cloud
With solid experience in system and network administration, I assist companies in managing, securing, and optimizing their IT infrastructures.
My goal: to ensure the performance, availability, and security of your systems while simplifying their daily management.
🧩 Key Skills:
System Administration: Windows Server, Linux (Debian, Ubuntu, CentOS), Active Directory, GPO, account and permission management.
Networks: configuration of routers, switches, VLANs, VPNs, firewalls, network monitoring, and troubleshooting.
Virtualization & Cloud: VMware, Hyper-V, Proxmox, Azure, AWS.
IT Security: backups, firewalls, system hardening, updates, and proactive monitoring.
Support & Maintenance: diagnostics, incident resolution, automation via scripts (PowerShell, Bash).
🚀 What I bring to you:
Reliable technical expertise and a solution-oriented approach.
Clear communication with your teams, even non-technical ones.
Proactive management of your servers and networks to minimize risks and interruptions.
I offer my services for both one-off missions (installation, migration, audit, troubleshooting) and for complete, ongoing management of your IT infrastructures.
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- FreelanceSystem and Network AdministratorFebruary 2024 - Today (2 years and 4 months)1. System AdministrationInstallation, configuration, and maintenance of servers (Windows, Linux, macOS).Management of user accounts and groups (Active Directory, LDAP).Management of security policies and group strategies (GPO).Monitoring of system performance (CPU, RAM, disks).Automation of tasks via scripts (PowerShell, Bash, Python).Planning and execution of backups/restorations (Veeam, Rsync, etc.).Application of security patches and system updates.Virtualization (VMware, Hyper-V, Proxmox).Management of file, print, and application servers.---🔹 2. Network AdministrationConfiguration and maintenance of network equipment (switches, routers, firewalls).Monitoring of local area network (LAN) and wide area network (WAN).Management of VLANs, VPNs, NAT, DNS, DHCP.Diagnosis and resolution of connectivity issues.Network security (ACLs, filtering, IDS/IPS).Monitoring of network traffic using tools (Wireshark, PRTG, Zabbix, Nagios).Implementation of high availability solutions (load balancing, redundancy).Documentation and schematization of network infrastructure (Visio, Draw.io).---🔹 3. Cybersecurity and Data ProtectionImplementation of security policies (firewalls, antivirus, encryption).Management of access rights and strong authentication (MFA, SSO).Log monitoring and intrusion detection.Backup and disaster recovery plan (DRP / BCP).Regular audit of information system security.---🔹 4. Cloud and VirtualizationAdministration of cloud environments:Microsoft Azure, AWS, Google Cloud, OVH Cloud.Deployment of cloud services (virtual machines, storage, virtual networks).Management of cloud licenses and subscriptions.Configuration of cloud backups and synchronizations (OneDrive, Dropbox Business, etc.).Monitoring and optimization of cloud costs.---Supervision and monitoring
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