Freelancer profile translated to English.
Back to original languageAbout Gaël
My 9+ years of experience have allowed me to work in varied and demanding environments:
Banking & High Criticality Sector: IT system management for the French branch of National Bank of Abu Dhabi (FAB) and security consulting for government organizations.
ESN & Multi-Client Expertise: Supporting diverse clients (Expert Line, OPEN, VEJA) on infrastructure and IT compliance projects.
Administration & Security: Proven expertise in Windows Server, Linux (Debian, CentOS, Red-Hat), virtualization (VMware ESXi/NSX) and security solutions (Cloudflare, Zscaler, Sophos, Veeam).
Graduated with a Master's in ERE from AFTI and a BTS SIO from ESIC, I combine a rigorous technical approach with a great capacity for adaptation, whether working in a team or autonomously.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- VEJANetwork and Security Systems EngineerRETAIL (SMALL BUSINESS)June 2023 - Today (3 years and 2 months)Paris, FranceManaged the evolution of the IT system in an international environment (EMEA, Europe, South America), covering 500+ users and 20+ sites.Strengthened overall security and coordinated local IT teams, significantly improving the security posture.Deployed and migrated secure architectures (ZTNA / SASE): implemented Netskope then switched to Cloudflare (Magic WAN), achieving gains in network performance and access security.Industrialized cloud supervision using Zabbix across 20+ sites, leading to a reduction in incidents and better proactivity.Enhanced email system security, reducing the risks of phishing and compromise.Managed critical projects on Microsoft Azure, ensuring availability, security, and compliance.Maintained operational readiness (MCO) and continuously improved service availability.Supported the opening of international sites (stores and offices): scoping, IT deployment, and on-site interventions, reducing service activation times.Centralized and optimized network management using FortiManager.Deployed access control solutions (NAC) and secured Wi-Fi access (802.1X).Conducted security audits and managed remediation plans, improving compliance levels.Optimized international network performance and resilience.Structured and formalized technical documentation, facilitating operations and knowledge transfer.
- OPENSystems, Networks, and Security EngineerPUBLIC SECTORFebruary 2022 - June 2023 (1 year and 4 months)Puteaux, FranceLong-term assignment at the Water Agencies of Ile de France.Responsible for system supervision and maintaining them in operational condition.Infrastructure relocation.
- Mairie de SartrouvilleSystems, Networks, and Security EngineerPUBLIC SECTORMarch 2020 - February 2022 (1 year and 11 months)Sartrouville, FranceSystems, networks, and security engineer, responsible for the management, evolution, and operational maintenance (MCO) of the IT systems for the city of Sartrouville.Information system risk and security management.Windows Servers 2003/2008/2008 R2/2012/2012/2012 R2/2016/2019Linux Debian/CentOS ServersBarracuda storage solutionsDisk backup (VEEAM)Zscaler access security solutionsUser support
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Education
- Master in Information Technologies / EREAFTI2015Technologies de l''information
- BTS SIO, System, Networking, and LAN/WAN Management/ ManagerESIC2014BTS SIO, System, Networking, and LAN/WAN Management/ Manager
Certifications
- Engineer Endpoint Protection Engineer UTM Engineer SophosSophos2015