Freelancer profile translated to English.
Back to original languageAbout Julien
Expert in Critical Infrastructures & Cybersecurity
Network and Security Engineer | 20+ years of experience | Expert in Sensitive Environments (Defense, Banking, Industry)
Transforming technical complexity into operational serenity.
With a career spanning over two decades at the heart of strategic networks, I support organizations in the design, security, and optimization of high-availability infrastructures.
My expertise is based on advanced mastery of market-leading technologies and a rigorous approach to risk management.
Why collaborate with me?
Multi-Sector Expertise: Proven experience within major institutions such as Naval Group, Banque de France, and Michelin.
Technological Mastery:Expert in Palo Alto (10.1), Fortinet (NSE), Cisco (CCNP), and Stormshield solutions.
Strategic Vision:PRINCE2 certified, I manage complex migration projects (SD-WAN, MPLS) and compliance strengthening, while ensuring service continuity.
Crisis Management:Demonstrated ability to resolve critical incidents and train teams on the strictest cybersecurity standards
French
Native or bilingual
English
Basic
Can work on-site
Paris (up to 50km)
Experience
- Naval GroupNetwork & Security EngineerDEFENSE AND MILITARYJanuary 2024 - April 2025 (1 year and 3 months)Paris, France• • Advanced support and resolution of critical incidents• • Implementation of Palo Alto and Fortinet solutions for sensitive environments• • Reduction of critical incidents through optimization of security policies
- RENATERNetwork & Security EngineerTELECOMMUNICATIONSJanuary 2020 - January 2024 (4 years)• • Advanced support and resolution of critical incidents• • Design and deployment of network architectures for research and education• • Implementation of advanced security solutions for academic networks• • Coordination of technical teams to ensure high availability
- MichelinNetwork & Security EngineerRAW MATERIALS INDUSTRYJanuary 2016 - January 2020 (4 years)• • Deployment of secure network architectures for international sites• • Migration to SD-WAN solutions and WAN performance optimization• • Management of compliance and security projects• • Advanced support and resolution of critical incidents
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Education
- Networks and Telecommunication CourseUniversity of Versailles Saint-Quentin en YvelinesUE Réseaux et Télécommunication
- Technologies for Client-Server Applications CourseCNAMUE Technologies pour les applications client-serveur