Freelancer profile translated to English.

Description

I have over 20 years of experience in information systems, with strong expertise in system infrastructures, networks, security, and IT project management. I have held positions as a systems and network engineer, architect, infrastructure manager, CISO/DPO, and then CIO/IT Director, which allows me to have both a very operational and a strategic vision of the information system.

I have worked in various environments, including healthcare, laboratories, industry, local authorities, and services. This diversity has allowed me to develop a good adaptability, particularly in demanding contexts where availability, security, and service continuity are essential.

Technically, I am comfortable with Windows Server and client environments, Hyper-V/VMware virtualization, Cisco/Dell/Netgear networks, Fortigate, Palo Alto, or CheckPoint firewalls, as well as cybersecurity, backup, and monitoring topics. I also have experience in OPEX/CAPEX budget management, purchasing, reporting, team management, and project management.

What characterizes me is a very hands-on approach: I like to understand needs, structure priorities, make infrastructures reliable, and support teams. I am focused on user service, security, performance, and business continuity.

Today, I want to put this experience to the service of an organization that needs a profile capable of taking a high-level view while remaining close to operational realities.

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km)

Fondation Cognacq-Jay – Hôpital Franco-Britannique
Systems/Network and Security Engineer
HEALTH AND WELLNESS
March 2025 - Today (1 year and 4 months)
Levallois-Perret, France
Critical hospital environment, with high stakes in availability, access security, and service continuity.
Intervention on network/security RUN, operational maintenance, and progressive improvement of the infrastructure.
Management of operational network and security:
Maintenance and evolution of a Fortinet firewall cluster
Review and remediation of existing firewall rule sets
Deletion and/or deactivation of obsolete rules after usage analysis
Creation of targeted rules to limit openings to only necessary ports and protocols
Implementation and evolution of remote access, notably SSL VPN
Renewal of certificates and creation of IPsec VPN tunnels with external partners
Participation in structuring access security, with implementation of filters by population via user groups and associated authentication
to the firewall, for example to authorize certain web access only to the concerned services. Management of business VLANs, maintenance of switches and network cores,
configuration backups, equipment and link monitoring via Centreon / Airwave, alert tracking and network incident diagnosis.
Implementation of proactive monitoring on critical application accesses hosted by external editors, allowing faster identification
of the origin of an unavailability, documentation of the incident, and exchange with providers on factual elements. Contribution to Level 1/2/3 support, training of support teams, and operational maintenance of the network/security environment.
Projects & Governance
● Definition of project phases and specifications
● Solution selection and service provider management
● Internal/external team coordination
Network & Security
● Securing external access
● Study and management of business VLANs
● Firewall cluster update and maintenance
● Switch update and maintenance
IRT SystemX
Information Systems Manager
April 2023 - July 2024 (1 year and 3 months)
91 Boulevard De Palaiseau, Palaiseau, France
I managed the overall IT operations by leading a team and participating in strategic decisions, particularly within the Steering Committee. I defined and implemented the Information System Security Policy (PSSI), while developing and controlling the associated budget. In parallel, I led several structuring projects, applying cross-functional management methods inspired by ITIL. Technically, I led major transformation projects, such as the complete redesign of the network infrastructure, the deployment of cybersecurity solutions (EDR/XDR Trend Micro, Fortinet firewall, MFA), as well as the installation of business tools like Sage Accounting. I also actively monitored technological advancements and contributed to BUILD phases, deploying new solutions adapted to the company's needs. Finally, I oversaw the operational maintenance (MCO) and user support from levels 1 to 3, coordinating my team to ensure efficient and responsive service. My role combined operational, technical, and strategic responsibilities, with a strong involvement in the continuous improvement of the information system.
● IT team management
● Trend Micro EDR deployment
● Complete network infrastructure redesign
● Fortinet firewall deployment
● MFA implementation
● Sage Accounting installation
● Steering Committee participation
● PSSI and budget implementation
● Cross-functional project management (ITIL)
Support and MCO
● Level 1/2/3 user support (assistance from my team)
● BUILD and technological watch
● Solution deployment
HGH Infrared
Information Systems Director
January 2022 - March 2023 (1 year and 2 months)
Igny, France
I led the IT team by supporting its activities and contributing to the company's strategic orientations, notably through my participation in the Steering Committee. I also updated the Information System Security Policy (PSSI), ensuring its alignment with current challenges. In terms of projects, I led the implementation of a new industrial ERP (Sylob), while strengthening security through the migration to a Bitdefender EDR solution and the upgrade of the Fortinet firewall. I also took charge of BUILD activities, conducted active technological monitoring, and deployed new solutions adapted to the organization's needs. Finally, I contributed to the operational maintenance (MCO) of the information system, ensuring the stability of environments and service continuity. My role was part of a global approach combining management, security, and continuous improvement.
● IT team management
● Implementation of new industrial ERP
● Security migration (Bitdefender EDR)
● Fortinet firewall upgrade
● Steering Committee participation
● PSSI update
Support and MCO
● BUILD and technological watch
● Solution deployment