Freelancer profile translated to English.

Description

Need a stable, secure network infrastructure or responsive IT support?

As a Network & Systems Administrator, I design and secure critical infrastructures for companies that cannot afford downtime. High-availability Fortinet firewalls, Windows Server clusters – I transform fragile architectures into resilient, documented, and 24/7 monitored systems.

I translate your technical needs into reliable solutions to ensure the protection of your data and the productivity of your teams.

Why choose to work with me?My approach is based on rigor and method:

**Perimeter Security**: Deployment and operation of high-availability Fortinet firewalls (FCA - Fortinet Cybersecurity), elimination of single points of failure on critical services.
**Rigorous Documentation**: Precise deliverables (LLD, HLD, architecture diagrams) for complete and sustainable control of your infrastructure.

*Operational Efficiency:Calm in complex situations, I analyze priorities to quickly resolve your network incidents.

*Technical Versatility:Mastery of Cisco (IOS, Meraki), FortiOS, Windows Server, and Linux environments.

What I concretely offer you:

**Networks & Security**: Firewalling, routing/switching, and management of essential services (AD/DNS, DHCP, VPN).
**Servers & Virtualization**: Deployment and management of physical or virtualized servers (VMWARE ESXi, Hyper-V) and Synology NAS storage.
**Maintenance & Support**: Incident resolution and direct technical assistance to users.

# Ready to strengthen your infrastructure? Let's discuss your project now!

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Malagasy
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

AEDIA
On Malt
Synology NAS Configuration and Synchronization
FILM AND AV
March 2026 - March 2026
**Achievements**:
Set up a VPN between the two NAS devices for end-to-end encrypted synchronization, without exposing ports or requiring a static IP.
Diagnosed and resolved an SSL certificate error that was blocking replication.
Updated the operating system (DSM) on one of the NAS devices to restore compatibility with advanced synchronization features.
Completely reconfigured inter-site synchronization, with validation tests before going live.
Delivered complete technical documentation and preventive maintenance recommendations (disk monitoring, alerts, certificate renewal).
**Result**: Automatic and secure synchronization operational between the two sites, protected data, no interruption of access for end-users.
Synology Virtual Private Network (VPN) Backup Solutions
PHYSALIS S.A.R.L
Network and System Administrator
December 2024 - Today (1 year and 8 months)
Antananarivo, Madagascar
A company that needs to make its critical infrastructure reliable and modernize aging systems without interrupting operations.
Optimized Bullets:

Strategic Steering - Primary technical contact for vendors and service providers for all infrastructure projects; guarantor of the company's network and system high availability.
Modernization with Measured Impact - Designed and deployed an internal messaging platform (Matrix + Element) on Kubernetes, replacing RocketChat, achieving 95% availability for 200 users - complete DevOps approach: containerization, scalability, CI/CD.
Reduction of Operational Risk - Deployed proactive monitoring (Zabbix/ELK) on 208 servers and workstations, reducing unexpected incidents by 35% - transforming a reactive posture into a preventive one.
Guaranteed Service Continuity - Secured critical services through resilient architectures, in continuous coordination with technical suppliers.
Technical Support Information Security Network Administration IT Architecture Kubernetes
NEXTHOPE S.A.R.L
IT Engineer
January 2024 - October 2024 (9 months)
Antananarivo, Madagascar
Major telecommunications clients need reliable infrastructures to win and secure contracts against competitors.

Optimized Bullets:
Direct Commercial Impact - Designed network architectures that contributed to winning tenders against competitors, for major clients in the telecommunications sector.
Large-Scale Deployment - Delivered a complete 3-tier network infrastructure (firewall, core, distribution, access) for a major telecom operator, covering 600 users.
Elimination of Failure Points - Implemented a high-availability Fortinet firewall and Windows Server 2019 servers in an HA cluster, eliminating SPOFs on critical client services.
Post-Deployment Reliability - Ensured continuous monitoring and optimization based on client feedback, strictly adhering to commercial deadlines.
Virtualization IT Project Management Network Administration System Administration Fortinet Firewall