Freelancer profile translated to English.
Back to original languageAbout Charles
Independent consultant in infrastructure and cybersecurity, I support VSEs, SMEs, and large accounts in the management, security, and outsourcing of their information systems.
I intervene end-to-end: systems administration (Windows Server, Active Directory, Microsoft 365), network (routing, switching, VLAN, VPN, Fortinet firewall), VoIP telephony (3CX, Asterisk), backup and disaster recovery/business continuity plan (DRP/BCP), and L2/L3 support.
On the security side: configuration hardening, filtering policies, site-to-site VPN and remote access, configuration audits, incident management, GDPR compliance, and ANSSI hygiene.
I automate and optimize operations through scripting (PowerShell, Bash, Python) and leverage AI and agent-based development solutions to deliver faster and document properly.
Rigorous diagnostics, autonomy, and pedagogical approach with non-technical stakeholders. Available remotely and in the Île-de-France region.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- OTO TechnologyFreelance Mission · Systems & Network AdministratorJanuary 2026 - May 2026 (4 months)Levallois-Perret, FranceAdministration and operation of systems and network infrastructure. Integration of AI solutions and agent-based development to automate and optimize operations. Deployments and technical interventions for clients.(Environment: systems, network, AI / agent automation.)
- Freelance – Développeur FullstackFullstack Web & API DeveloperTECHJanuary 2022 - Today (4 years and 5 months)Sèvres, FranceDevelopment of custom web applications (React, Node.js), creation of REST APIs, workflow automation, and integration of third-party tools. I am involved in the design, development, deployment, and maintenance of high-performance web solutions for freelancers, startups, and VSEs.
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Education
- Fullstack Developer TrainingOpenClassrooms2023Programmation web avec JavaScript, développement d’applications complètes avec Node.js, Express, React.js et MongoDB. Apprentissage des API REST, de l’architecture client/serveur, du versioning Git, et des bonnes pratiques de clean code.
- BTS SIO option SISR (IT Services for Organizations, Option Solutions Infrastructure Systems and Networks)AFORP2021Formation supérieure en informatique axée sur les infrastructures, systèmes et réseaux. Au programme : administration de serveurs Windows et Linux, configuration et gestion de réseaux (routage, commutation, VLAN, services DNS/DHCP, Active Directory), virtualisation, sécurité des systèmes d'information (pare-feu, VPN, supervision), déploiement et maintenance de parcs informatiques, ainsi que scripting d'automatisation. Formation alternant cours et projets concrets en entreprise — un socle solide en infrastructure et en administration système qui me permet aujourd'hui de gérer le déploiement, l'hébergement et la mise en production de mes applications web de bout en bout.