Freelancer profile translated to English.

Description

I am an Infra Microsoft consultant (18 years of experience, self-employed since 2013). I secure Active Directory & Exchange to reduce the risk of compromise (ransomware / identity theft) and I modernize messaging: Exchange SE / Exchange Online / Hybrid.

What I do daily:

- AD Security Audit + Remediation Plan (prioritized, quick wins + structural actions)

- AD Hardening: DC / member servers, LDAPS + certificates, tiering / admin silos, gMSA, disabling obsolete protocols (NTLMv1/SMBv1/RC4…), compliance scripts

- Exchange Hardening: security posture, TLS/ciphers, modern auth/MFA, RBAC, OS/IIS hardening, monitoring, DR/ransomware

- Upgrades/Migrations: Exchange 2016 → Exchange SE, Exchange 2010 → 2019, migrations to ExO (coexistence + rollback)

- Securing mail flows: SPF / DKIM / DMARC + MX switch / standardization

Examples of recent projects:

- Upgrade Exchange 2016 → Exchange SE (2200 MAILBOXES) + advanced security + team transfer

- AD Security Project (400 accounts): audit, remediation, tiering + Yubikey admin access

- AD/WS2022 Upgrade + ADCS + siloed admin model + ANSSI recommendations

With particular attention to deliverables:

Audit, architecture document, phased execution plan (and rollback), runbooks, PowerShell automation, skills transfer.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Toulouse (up to 50km)

RP CONSULTING
Infrastructure Consultant
January 2007 - Today (19 years and 5 months)
- Active Directory Security – audit + remediation + tiering / silos (LDAPS, gMSA, disabling obsolete protocols, compliance scripts, DC audit, etc.)

- Exchange 2016/2019 Security – improvement plan + hardening (MFA/modern auth, hardening, procedures, DR)

- Exchange 2016 → Exchange SE Upgrade – 2200 MAILBOXES (HA architecture, migration, decommissioning, training)

- Exchange 2013 → 2019 Migration – 16,000 MAILBOXES

- Exchange Hybrid / M365 – 150,000 MAILBOXES

- Migration to Exchange Online – 22,000 MAILBOXES + DMARC/SPF/DKIM standardization
Microsoft Exchange Exchange Online Active Directory Security DKIM