Freelancer profile translated to English.
Back to original languageAbout Sébastien
With 25 years of experience in IT technical infrastructures, I currently support my clients in their IT transformation projects. A Datacenter specialist, my project and production experience allows me to work on all the infrastructure components that make up a Datacenter.
For the past 6 years, I have been managing the infrastructure production team for a major client in the financial sector (team of 15 people + partners and subcontractors).
I also manage datacenter transfer and rationalization operations, I ensure the execution of technical audits and the management of works in datacenters and critical sites.
French
Native or bilingual
Can work on-site
Paris (up to 50km), La Rochelle (up to 100km), Nantes (up to 100km), Bordeaux (up to 100km)
Experience
- SMDC ConsultingIndependent OwnerMarch 2017 - Today (9 years and 3 months)Île-de-France, FranceWith 25 years of experience in IT infrastructure, I currently support my major clients in their IT transformation projects. A Datacenter specialist, my project and production experience allows me to work on all the infrastructure components that make up a Datacenter.Recent Achievements:
- Transition Manager– IT infrastructure (Datacenter, system, storage, and network): Management of operational infrastructure teams (15 people) + Technical management of supplier contracts (hosting, storage, backup, network…)
- Datacenter Rationalization / Transformation:Management of datacenter redesign, relocation, and transfer projects + rationalization and upgrading of existing sites.
- Datacenter Urbanization / Audit:Audit of datacenters in production, definition and management of upgrade works + urbanization of new hosting sites and critical tertiary environments + implementation of DCIM.
- Tender Management:Client assistance in drafting and managing tenders in the areas of hosting, infrastructure, maintenance, and support + management of reversibility phases.
- Disneyland ParisDatacenter and Technical Room ExpertENTERTAINMENT AND LEISUREOctober 2025 - Today (8 months)Marne La Vallée, FranceMain objective of the mission:Operational and strategic management of physical IT infrastructures, including datacenters and technical rooms.Responsibilities:
- Define and implement standards and best practices for the management of datacenters and technical rooms.
- Manage projects for the evolution, optimization, and renovation of physical IT infrastructures.
- Implement and monitor infrastructure management and monitoring tools (DCIM = Data Center Infrastructure Management, supervision systems, etc.).
- Ensure daily operational monitoring of sites, including preventive and corrective maintenance.
- Manage maintenance contracts with suppliers, negotiate services, control SLAs, and guarantee the quality of services rendered.
- Supervise and lead a technical team dedicated to IT infrastructures, ensure skills transfer and upskilling of employees.
- Collaborate closely with IT, security, and facility management teams to ensure the availability and compliance of infrastructures.
- Participate in the management of budgets related to IT infrastructures.
- Ensure technological and regulatory monitoring of sector developments.
- Engie Global Markets (GEMS)Team Leader - InfrastructureENERGY AND UTILITIESMarch 2019 - December 2025 (6 years and 9 months)Courbevoie, FranceTeam Leader of the infrastructure production team.Responsible for managing the infrastructure production team (15 employees) and managing associated outsourcing contracts (datacenter, network, maintenance, storage, backup…)
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