Freelancer profile translated to English.

Description

IT Infra Director – Datacenter & ROI Expert, I assist CIOs and ETIs in modernizing their technological base, securing operations, and optimizing IT performance. I work in critical environments (logistics, e-commerce, retail, industry) where business continuity, cybersecurity, and cost control are strategic issues.

Specializing in hybrid architectures, datacenter design and operation, operational resilience (MCO, DR/BCP, high availability), and cybersecurity (PSSI, crisis management, ISO 27001), I design robust, scalable, and business-value-oriented infrastructures.

Latest major achievement: complete IT system transformation

Managed a global program including audit, Cloud strategy, network modernization, cybersecurity, document governance, and ISO 27001 roadmap.

Key results:

- Private/public Cloud redesign and usage rationalization

- Fiber network reconstruction via municipal MAN

- 800 Gbit/s datacenter interconnection

- Deployment of a 2N+1 hyperconverged infrastructure

- Advanced network segmentation and protocol breaking

- Digital identity redesign (MFA/SSO)

- Secure backups (immutable vault + Cloud Glacier)

- Implementation of ISO 27001 document governance (certification obtained)

- Construction of a dedicated administration team

- Development of a 5-year CAPEX/OPEX plan with ROI and operational gains

I assist organizations in implementing demanding SLAs, reducing technical debt, and optimizing their datacenters' energy consumption.

Available for IT infrastructure management, IT system transformation, architecture security, datacenter optimization, or production management missions.

If you want to secure your IT system, modernize your infrastructure, or structure a clear and profitable technological roadmap, I can help you.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
German
Basic

Workplace preferences

Can work on-site

Rennes (up to 50km), Nantes (up to 50km), Lorient (up to 50km), Brest (up to 50km), Laval (up to 50km)

S.A.S. SYSVYA
Director
TECH
December 2025 - Today (6 months)
Creation of SysVya, a complete infrastructure designed for SMEs wishing to have a robust, sovereign, and cost-controlled IT system. Design of a modern, secure, and fully self-hosted technical base, demonstrating concrete expertise in architecture, cybersecurity, and automation.

Key achievements:
• Design of a highly optimized KVM virtualized infrastructure: hypervisors, storage, network, segmentation, high availability adapted to SME constraints.
• Development of advanced monitoring scripts (collection, alerting, metrics, corrective automation) to ensure visibility, stability, and responsiveness.
• Creation of the SysVya AuditBox: a portable audit appliance for rapid analysis of an IT system (inventory, security, network, compliance, risks).
• Implementation of an internal PKI based on step-ca, including certificate management, automated renewal, internal communication security, and hardening of exposed services.
• Deployment of the SysVya private cloud: internal services, backups, monitoring, CI/CD, document management, all while ensuring sovereignty and cost control.
• Design of a lean, resilient, and scalable architecture, incorporating cybersecurity best practices, access hardening, MFA, segmentation, and centralized monitoring.
• Implementation of a sovereign Modern Workplace environment: messaging, document sharing, identity management, collaborative tools, all without dependence on hyperscalers.
• Construction of an optimized economic model: reduced infrastructure costs, refurbished equipment, controlled energy consumption, rapid ROI.

This SysVya infrastructure serves as a technical showcase demonstrating my ability to design, secure, and operate a complete, modern, and efficient IT system, while respecting the budgetary and operational constraints of SMEs.
IT Project Management Change and Transformation Management IT Strategy System Integration Audit
Groupe Cordon
IT Infrastructure and IT Methods Director
October 2021 - December 2025 (4 years and 2 months)
Directed the structuring and management of a team of 39 employees (systems, networks, support, cybersecurity) and the definition of the group's IT transformation roadmap. Implemented international technological and operational standards in a context of strong growth and resilience requirements.

Key achievements:
• Developed the strategic IT roadmap, including Cloud trajectory, infrastructure modernization, and alignment with business objectives.
• Defined and deployed international IT standards: security, network, identity, document governance.
• Complete redesign of employee digital identity (MFA/SSO), GDPR compliance, and strengthened access security.
• Implemented advanced network segmentation and secured production sites.
• Deployed Microsoft Modern Work, Dynamics Sales, CRM, and Field Services solutions to harmonize usage and improve productivity.
• Optimized recurring costs through short-ROI investments, license rationalization, and reduction of technical debt.
• Drafted and implemented cyber compliance rules in collaboration with the CISO.
• Built document and operational governance compatible with ISO 27001.
• Achieved ISO 27001 certification.

This mission strengthened the IT system's resilience, improved data flow security, industrialized IT practices, and instilled a culture of performance and compliance within the teams.
System Integration Change and Transformation Management IT Strategy IT Project Management Team Management
Groupe Roullier
Networks and Telephony Manager
January 2016 - September 2021 (5 years and 8 months)
Supervised a network covering 102 countries and managed a team of 4 engineers responsible for infrastructure, security, and advanced support. Operated in a demanding international context requiring standardization, resilience, and operational security.

Key achievements:
• Deployed network and security solutions in over 90 subsidiaries across 40 countries, including segmentation, access hardening, and configuration standardization.
• Took over and secured a fleet of 1,600 mobile devices, integrating an MDM solution to enhance compliance, access management, and data protection.
• Designed, built, and commissioned two private datacenters for the group: high availability, redundancy, business continuity, and energy optimization.
• Managed and operated the group's international backbone, ensuring performance, resilience, and quality of service for all subsidiaries.
• Managed and optimized the private cloud: resource rationalization, traffic security, scalability improvement, and recurring cost reduction.
• Participated in the design of low-current plans for new buildings (network, security, cabling, technical rooms), in line with infrastructure standards and availability requirements.
• Implemented supervision, alerting, and incident management processes to improve visibility, reduce service interruptions, and enhance operational quality.

This mission unified network practices globally, significantly improved IT system security, strengthened infrastructure resilience, and established a solid technical foundation to support the group's international growth.
Team Management IT Strategy System Integration IT Architecture