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Jean YalbirJY

Jean Yalbir

Infrastructure Project Manager | Systems Engineer

€700/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jean

IT Infrastructure Project Manager and Microsoft Expert, I help companies modernize, secure, and optimize their critical infrastructures.

I undertake high-value missions combining technical project management and operational expertise in complex Microsoft environments (on-premise, cloud, and hybrid).

My areas of intervention:

• Infrastructure / Cybersecurity / IT Transformation Project Management
• Technical Project Coordination and Multi-stakeholder Management
• PKI / ADCS Architecture / Certificate Lifecycle Management
• Active Directory / Windows Server / GPO / DNS / DHCP
• Azure / Microsoft 365 / Cloud and Hybrid Environments
• Security and Hardening of Critical Infrastructures
• VMware / Hyper-V Virtualization
• SQL Server / Clustering / High Availability

Thanks to my dual technical and organizational expertise, I can effectively manage infrastructure projects while also intervening on technical aspects when necessary.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • METLIFE
    Infrastructure & Security Consultant – MetLife
    BANKING AND INSURANCE
    April 2024 - Today (2 years and 4 months)
    Paris, France
    Involved in projects for securing, modernizing, and optimizing IT infrastructures in critical environments.

    Main interventions:

    • Project management for IT infrastructure evolution and security
    • Vulnerability management and security flaw remediation
    • PKI administration and security / certificate management (Venafi)
    • Compliance and strengthening of security posture
    • SQL Server administration and optimization
    • Automation and process management via VTOM
    • Support and expertise on complex technical environments
    VTOM SQL Server System Administration PKI Project Management
  • Prolival
    Systems Engineer
    DIGITAL AND IT
    April 2023 - April 2024 (11 months)
    Colombes, France
    Acted as a technical referent for Microsoft / PKI on projects for securing, modernizing, and evolving critical infrastructures, with a strong focus on PKI architectures and high availability.

    Main interventions:

    • Technical and organizational audits of PKI infrastructures
    • Deployment and evolution of Active Directory (ADDS) infrastructures in critical environments
    • Redesign and migration of Microsoft ADCS PKI architectures
    • Deployment of secure PKI architectures (Root CA Offline, SubCA, AIA/CDP, OCSP)
    • Advanced administration of PKI infrastructures and certificate lifecycle management
    • Implementation of Windows Server and SQL Server clusters for high availability
    • Design and deployment of high availability / fault-tolerant architectures
    • Implementation of best practices for securing Microsoft environments
    • Implementation and optimization of virtualised environments (VMware, Hyper-V)
    • Deployment of physical servers and infrastructure virtualization
    • Implementation of storage solutions for files on Azure
    • Training and support for technical teams (internal and external)
    • Assisting clients in modernizing and evolving their Microsoft infrastructures
    Microsoft Azure Windows Server Active Directory PKI Virtualization
  • Metlife
    Production Systems and Network Engineer
    BANKING AND INSURANCE
    March 2021 - April 2023 (2 years and 2 months)
    Puteaux, France
    Worked in a critical international production environment on the operation, administration, and optimization of infrastructures, with multi-team technical coordination.

    Main interventions:

    • Administration and evolution of the VTOM scheduling solution
    • Management of production deployments and application evolution
    • Coordination with international development teams on batch flows and automated processes
    • Administration of Windows / Linux server environments and SQL Server databases
    • Maintenance and support of multi-site network infrastructures (France, Italy, Spain, Portugal)
    • Server certificate management and contribution to environment security
    • Contribution to infrastructure evolution projects and technical coordination
    VTOM Windows Server SQL Server PKI Project Management

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