Freelancer profile translated to English.
Back to original languageAbout Romain
Hello 👋
I am a Systems & Security Administrator with 10 years of experience, specializing in Windows Server, VMware, Active Directory, CIS hardening, PowerShell automation, and securing critical infrastructures.
🎯 What I offer on Malt: quick, remote interventions, with flexible hours.
I handle your specific technical issues, even urgent ones, without long-term commitment.
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🚀 Services I regularly perform
🔹 Windows Server / Active Directory
AD analysis & correction (DNS, replication, GPO, FSMO roles)
CIS hardening / Windows security
Compliance (CIS, ANSSI, LPM)
DNS / DHCP / NPS optimization
Kerberos / LDAP / Group Policy error resolution
🔹 VMware / Virtualization
ESXi / vCenter diagnostics
VMware cluster optimization
Datastore, snapshot, HA/DRS troubleshooting
Configuration / migration / redeployment
🔹 Security & Logs
NXLog collector setup
Connection to SOC / SIEM
Wallix Bastion (WAB / PAM)
Full security audit (Windows + VMware + network)
🔹 Automation & Scripts
Custom PowerShell script creation
Automation of recurring tasks
AD cleanup, user management, inventory, etc.
🔹 Linux Systems
Oracle Linux / RHEL / Ubuntu optimization
Hardening & security
Service / network / firewall troubleshooting
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⚡ Why work with me?
10 years of experience in sensitive environments (airport, industrial, critical infrastructures)
Ability to intervene quickly, even on complex issues
Clear, structured, solution-oriented
Short and targeted missions = maximum efficiency
I adapt to time constraints (evenings, weekends possible)
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- Groupe ADPSystems AdministratorDecember 2021 - Today (4 years and 6 months)• Management of VMware clusters (configuration, monitoring, and maintenance).• Administration and operation of Active Directory services (AD DS, DNS, GPO, AD sites, etc.) in GUI and Core modes.• Hardening of operating systems (Windows and Linux) according to CIS standards.• Installation, maintenance, and configuration of a log collection server (Nxlog).• Deployment, management, and operation of an automated deployment server (WDS/MDT).• Creation of PowerShell scripts on demand or according to operational needs.• Installation, management, and optimization of WSUS for system updates.
- SARL MaxinfowebMobile IT TechnicianNovember 2020 - December 2021 (1 year and 1 month)• Migration of a metallurgy company infrastructure from 5 Windows Server 2008 servers to Windows Server 2019 (AD, DNS, Application Server, SQL Database) and from about sixty Windows 7/XP workstations to Windows 10.
- Groupe ADPLow Voltage TechnicianJune 2019 - November 2020 (1 year and 5 months)Project: Management of Building Management System (BMS) on the IT side (Server, client workstation). Maintenance and supervision of control equipment like PLCs. Supervision of service providers during their interventions on equipment and PLCs. Commissioning of automated border control gates (PARAFE). Management of an internal IPTV service for service provider premises, 24/7 presence.
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Education
- BTS SIO (Higher National Diploma in IT Services for Organizations)AFORP2014BTS SIO
- STI Electronics (Technological Baccalaureate in Electronics)STI Electronics Lycée Adolphe Chérioux2012