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Sylvain EstelléSE

Sylvain Estellé

Technical Architect | Hybrid Cloud – Governance

€600/day
Lyon, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sylvain

Technical architect with over 10 years of experience in designing, evolving, and securing IT infrastructures. I am involved in transformation projects where cloud, governance, and interoperability are central.

My approach is cross-functional: I design robust, scalable, and documented architectures, in close collaboration with IT, security, operations, and sometimes business teams, to ensure technical and functional consistency.

My areas of specialization:
☁️ Hybrid Cloud (Azure, AWS)
🛡️ IT Governance & System Security
🧩 Urbanization, interconnection, and infrastructure rationalization
📝 Architecture documents, risk analysis, BCP/DRP

I am currently seeking a technical or solution architect position in a non-ESN structure, ideally located in Lyon or Montpellier, where I can contribute to structuring projects, in direct contact with IT management.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Klanik
    Technical Architect
    April 2024 - June 2025 (1 year and 2 months)
    This involved numerous studies to assist team members in their choices (web supervision, high-availability database, use of a vault for credentials) and to support them in their implementations.
  • Synchrone
    Technical Architect
    September 2023 - January 2025 (1 year and 4 months)
    Lyon, France
    During a period between contracts at Synchrone, I completed training, notably in Responsible Digital Training.
  • AceDigitale
    Technical Coordinator for BioMérieux.
    March 2023 - September 2023 (6 months)
    I was responsible for the technical coordination of all cybersecurity-related projects on the industrial side. I served as the interface between all external service providers who needed to conduct audits or interventions on BioMérieux sites.
    Finally, I requested internal technical teams to carry out the necessary tasks for audits and interventions, ensuring they were correctly performed and deadlines were met. In some cases, I had to remediate technical issues related to integrations by organizing technical workshops with internal teams and service providers. Details of achievements

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Education

  • Master of Information Systems Expert
    2014
    Master Expert des systèmes d'informations
  • Bachelor's Degree in IT Project Management
    2012
    Licence Chef de projet informatique

Skill set

Categories