Freelancer profile translated to English.

Description

Senior Systems & Network Administrator with over 10 years of experience in the design, operation, security, and evolution of IT infrastructures for SMEs and demanding professional environments.

I work on Microsoft and Linux environments, with strong expertise in:

Windows Server (Active Directory, DNS, GPO)

Microsoft 365 (Exchange Online, SharePoint)

Virtualization (VMware vSphere)

Networks & security (Firewall, VPN, segmentation, high availability)

Web services (IIS, Nginx, SSL/TLS certificates)

Accustomed to critical contexts, I work with an approach focused on stability, security, and performance, both in level 3 support and in infrastructure evolution, migration, or security projects.

🔧 Types of missions

Systems & network administration and operation

Server and Microsoft 365 migration

Infrastructure security (hardening, best practices)

Implementation of backup and DRP solutions

Long-term technical support

✅ Strengths

100% remote

Autonomous, reliable, results-oriented

Clear communication (FR / EN / AR)

Technical + operational vision

Available for ad-hoc or long-term assignments, with a strong commitment to quality and service continuity.

Languages

French
Native or bilingual
English
Fluent
Arabic
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

NOVATIVE
Senior Systems & Network Administrator
TECH
April 2015 - August 2025 (10 years and 4 months)
Nyon, Switzerland
Senior Systems & Network Administrator with over 10 years of experience in managing, securing, and operating IT infrastructures for SMEs and demanding professional environments.

I work on Microsoft and Linux environments: Windows Server (AD, DNS, GPO), Microsoft 365 (Exchange Online, SharePoint), VMware vSphere virtualization, network security, and web services (IIS, Nginx, SSL/TLS).

Accustomed to critical contexts, I work with an approach focused on stability, security, and performance, both in level 3 support and in infrastructure evolution and migration projects.

✔ 100% remote
✔ Clear communication (FR / EN / AR)
✔ Autonomous, reliable, results-oriented

Available for administration, migration, security, audit, or long-term technical support assignments.
Linux Server Microsoft365 Exchange Online IT Security Firewall / VPN
institut medical champel
Senior Systems & Network Administrator
MEDICAL
September 2012 - December 2014 (2 years and 3 months)
Genève, Switzerland
Administration, operation, and security of IT infrastructures for SMEs and professional organizations.

Main tasks:

Windows Server Administration (Active Directory, DNS, GPO)

Microsoft 365 Management and Migration (Exchange Online, SharePoint)

VMware vSphere Virtualization

Network Security: Firewall, VPN, segmentation, best practices

Monitoring, backups, and business continuity

Level 2 & 3 Support

Long-term technical support for clients

Results:

Improved system stability and security

Reduced critical incidents

Reliable and scalable infrastructures
IT Security Virtualization Computer Networks level 3 support

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Federal ICT Diploma – Platform Development Specialist
Satom IT & Learning Solutions
2025
Brevet fédéral ICT reconnu par la Confédération suisse (SEFRI). Formation avancée axée sur : - Architecture et exploitation de plateformes IT - Administration systèmes et réseaux - Virtualisation et infrastructures cloud - Sécurité des systèmes et des réseaux - Automatisation, performance et haute disponibilité - Gestion de projets ICT et environnements professionnels complexes

Khaalid Maxmed

Senior Systems & Network Administrator

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