Freelancer profile translated to English.
Back to original languageAbout David
Your Microsoft infrastructure is at the heart of your business.
But between technical debt, scaling, availability issues, cybersecurity, complex migrations, or lack of internal resources, risk is never far away.
I am David Lachari, a Microsoft Expert specializing in Active Directory & Hyper-V Virtualization, with 22 years of experience in critical infrastructure projects.
Former Microsoft MVP Hyper-V for 7 years, author of the reference book published by ENI, I have supported CIOs, IT architects, and large organizations on sensitive, distributed, hybrid, or highly available environments.
Hyper-V & SCVMM Virtualization
- Architecture, design & industrialization of Hyper-V platforms
- Deployment, clustering, high availability, Disaster Recovery
- Performance optimization, storage, network, backup
- Complex incident resolution & advanced troubleshooting
- Support, coaching, skills transfer
VMware / Hyper-V Migrations
- Environment audit & cutover strategy
- Phased, secure, and reversible migration plan
- Cost optimization & license rationalization
- Change management & IT team support
Active Directory
- Architecture audit, governance & GPO
- Security hardening (Kerberos, LDAP, Tiering, Zero Trust)
- Redesign, consolidation, multi-site, M365 integrations
- Post-incident / post-cyber attack remediation
- Implementation of best practices & documentation
Automation & Operations
- PowerShell scripting, monitoring, supervision
- Operational documentation and processes
- Support for architects, admins & CIOs
Why work with me
- Sharp & proven Microsoft expertise in the field
- Pragmatic vision focused on results, costs, and risks
- Intervention possible in sensitive environments
- Structured knowledge transfer to make your teams autonomous
Describe your context, and I'll get back to you quickly with a tailored approach.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- ServierHYPER-V AND SCVMM ARCHITECTApril 2024 - June 2025 (1 year and 2 months)Within the Architecture team, I am responsible for migrating SERVIER's virtual infrastructures from VMware to Hyper-v, implementing new Hyper-v cluster platforms associated with SCVMM 2022.
- Definition of Hyper-v / SCVMM architectures for Test and Production environments
- Migration of Pre-production virtual machines (480) from VMware to Hyper-v using Veeam
- Writing all DAT + Operating Procedures + Installation Documents
- Installation and configuration of the SCVMM 2022 solution (converged network...)
- Installation and configuration of Hyper-v 2022 virtual environments
- ARVALHYPER-V AND SCVMM ARCHITECTDecember 2022 - March 2024 (1 year and 3 months)Within the Infrastructure team, I am responsible for managing the entire virtual infrastructure, composed of over 100 Hyper-v hosts and approximately 2,300 Virtual Machines.
- Accor TechACTIVE DIRECTORY AND SECURITY ARCHITECTHOSPITALITYApril 2022 - November 2022 (7 months)Évry-Courcouronnes, FranceWithin the Active Directory team, I am responsible for securing directory services and remediating blocking points using PingCastle and ALSID tools + CIS recommendations.
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Education
- Management Information Systems Technician DegreePlus Values2005
- Master of Science in ITESI SUPINFO2008
Certifications
- Microsoft Certified ProfessionalMICROSOFT
- Microsoft Specialist: Server Virtualization with Windows Server Hyper-v and System CenterMICROSOFT