Freelancer profile translated to English.
Back to original languageAbout Titouan
Senior consultant with 10 years of experience in securing and optimizing Microsoft environments, managing and administering multi-forest Active Directory (>50,000 users), advanced automation (PowerShell), and major incident response. Combines in-depth technical expertise with agility developed during a self-organized world tour. I am passionate about travel and scuba diving, and I also enjoy DIY.
French
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Montpellier (up to 50km), Toulouse (up to 15km), Marseille (up to 15km), Nice (up to 15km), Nantes (up to 10km)
Experience
- Pole Emploi DSIActive Directory and Windows Systems Expertise / Security ReferentPUBLIC SECTORApril 2020 - April 2024 (4 years)Montpellier, FranceStrategic and operational security management for Microsoft environments (Windows Server, Active Directory) in a complex environment with over 56,000 users, several thousand virtualized servers, and a multi-site, multi-forest, and multi-domain Active Directory.• Design and deployment of a complete infrastructure for collecting and monitoring security logs (Windows Event Collector, Winlogbeat, Elastic Stack, Kibana, QRadar SIEM).• SIEM query development, custom dashboard creation, and alert automation to anticipate and detect any illegitimate movement on Active Directory (lateral or vertical).• Implementation of Zero Trust and Red Forest policies, regular audits (Bloodhound, PingCastle, Sharehound).• Hardening and updating Windows baselines (disabling weak protocols, PowerShell 7.2, .NET 4.8, ANSSI compliance). Proactive incident management: analysis, remediation, cyber crisis management, active participation in vulnerability monitoring (Zero Logon, patch management).• Implementation of least privilege administration policies (Just Enough Administration, Just In Time Administration) to enhance IT security.• Advanced automation via PowerShell to industrialize auditing, reporting, and management of antivirus and application inventory.• Participation in the Pôle Emploi cybersecurity community (monitoring, sharing best practices and feedback).
- Pole Emploi DSIVirtualization & Automation EngineerPUBLIC SECTORDecember 2017 - September 2022 (4 years and 9 months)Montpellier, FranceSkill development in virtualized environments, deployment orchestration, and advanced automation of operations on the Windows inventory.• Nutanix cluster administration, major incident management with publisher support, advanced VMware VCenter management.• Participation in SDDC (Software Defined Data Center) infrastructure projects: network, storage, and server virtualization to enhance IT robustness and flexibility.• Extensive development of PowerShell scripts for VM lifecycle automation: deployments, automatic diagnostics, audits, component installation, and recurring operations.• Implementation and administration of VMware vRealize automation platforms (vRA/vRO) to industrialize workflows and improve operational efficiency.• Large-scale supervision and automation of cleaning, auditing, and maintaining the operational status of the Windows inventory.
- Pole Emploi DSIActive Directory and Windows Systems Engineer.PUBLIC SECTORSeptember 2018 - April 2024 (5 years and 7 months)Montpellier, FranceActive Directory and Windows systems expert within the Centralized Windows Engineering and Infrastructures team at Pôle Emploi DSI in a complex environment, with over 56,000 users, several thousand virtualized servers, and a multi-site, multi-forest, and multi-domain Active Directory. Responsible for the availability, security, and evolution of Active Directory architectures and Windows servers.• Management, Level 3 support, and operational maintenance of all Windows Server and AD infrastructures in a multi-site environment: user management, OU, GPO, DNS, security, trust relationships.• Modernization: migration of directories and domain controllers from 2003 to 2016 Core, integration of new sites, and security compliance.• Industrialization of tasks via PowerShell scripting: creation of tools for automating management operations, audits, reporting, creation of scripts to deploy Windows baselines on virtualization infrastructures.• Active participation in IT project management: PI planning, agile methodologies (Scrum Master, daily meetings), reporting via clear and concise materials.• Backup administration & optimization (Avamar), supervision (Centreon), IP management (EfficientIP IPAM), and license inventory control (KMS/SLRDS).• Update server administration (WSUS): synchronization management, creation and management of approval rules and associated GPOs.• Design of metrology dashboards (vROps), supervision management, alert integration, and availability optimization.
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Education
- Engineer, Systems and NetworksEcole des Mines d'Alès2016Ingénieur Informatique spécialité Systèmes et Réseaux
- BTS Services Informatiques aux Organisations, Systems and NetworksLycée Jean Mermoz Montpellier2013BTS Services Informatiques aux Organisations, Systèmes et réseaux
Certifications
- TOEICEcole des mines d'ales2015