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Guillaume L.GL

Guillaume L.

Infrastructure and IT Resilience Architect

€700/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Infrastructure Architect, specializing in storage and backup, with solid experience in designing infrastructures aligned with clients' functional needs. Proactive in proposing technological evolutions, with a constant focus on optimizing system performance and availability.
Appreciated for my interpersonal skills, synthesis ability, and methodical approach, I intervene effectively in varied, sensitive, and high-availability environments.

With several years of experience in technical expertise on On-Prem infrastructures, I bring autonomy and rigor to architecture design.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • MINISTÈRE DE L’INTÉRIEUR
    STORAGE AND BACKUP ARCHITECT
    DEFENSE AND MILITARY
    February 2025 - Today (1 year and 6 months)
    Responsibilities:
    > Functional and technical mapping of the global IT storage and backup infrastructures
    > Collection and analysis of information on existing infrastructures
    > Development of functional diagrams used by Management
    > Creation of detailed technical diagrams for architects and engineers

    > Conducting storage infrastructure architecture and deployment studies
    > Study for the deployment of a new SAN storage infrastructure in another Datacenter, including analysis of data migration scenarios and asset relocation
    > Management of capacity expansion on a Hitachi Vantara storage array, and updating associated technical documentation

    > Steering storage and backup infrastructure evolution projects
    > Responding to business requests to meet specific needs
    > Participation in architecture committees
    > Technology watch to anticipate evolutions and identify improvement opportunities

    Key Projects:
    > Implementation of a new Netbackup backup infrastructure
    > Modernization of SAN infrastructures (replacement of SAN directors to optimize performance and scalability): Development of scenarios, management of technical deliverables (elevation plans, network topologies, cabling)
    > Relocation and consolidation of office NAS: Design of the architecture, development of detailed technical deliverables (architecture diagram, elevation plan, network addressing management, cabling plans) and integration with VARONIS and ActiveIQ tools to improve efficiency and resource management
  • Banque de France
    TRANSVERSE IT ARCHITECT
    PUBLIC SECTOR
    March 2022 - January 2025 (2 years and 10 months)
    Ile-of-France, France
    Responsibilities:
    > Definition of the X86 strategy: market trend analysis and technical recommendation formulation
    > Regular meetings with key manufacturers (HPE, Dell, Cisco)
    > Development of selection and decision-making support documents

    > Design of architecture solutions for data outsourcing
    > Writing architecture and design documentation

    > Contribution to the IT backup strategy, in collaboration with architecture teams
    > Transverse steering: visibility on various IT projects, analysis of impacts and interactions with infrastructure teams (all platforms combined) to anticipate future needs
    > Management and monitoring of software and hardware updates for the VCE/VxBlock converged infrastructure solution, in direct liaison with Dell

    Projects:
    > Study and definition of the X86 strategy
    > Steering the migration project of the TSM backup solution to a new infrastructure
    > Implementation of an outsourced backup solution with a trusted third party (European bank) to cover major disaster and datacenter loss scenarios
  • SAFRAN
    STORAGE ARCHITECT
    November 2021 - January 2022 (2 months)
    Technical
    • Regular meetings with key manufacturers (HPE, Dell, Cisco)
    • Development of selection and decision-making support documents
    > Design of architecture solutions for data outsourcing
    • Writing architecture and design documentation
    > Contribution to the IT backup strategy, in collaboration with architecture teams
    > Transverse steering: visibility on various IT projects, analysis of impacts and interactions with infrastructure teams (all platforms combined) to anticipate future needs
    > Management and monitoring of software and hardware updates for the VCE/VxBlock converged infrastructure solution, in direct liaison with Dell

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Education

  • MASTER Networks and Systems Engineering (IRS)
    University of Versailles Saint-Quentin-en-Yvelines (78)
    2006
    obtention avec Mention

Certifications

  • Certified IT Architect
    ORSYS
    2020
    New IT Architectures SOA TOGAF IT Urbanization

Skill set

Categories