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Quentin PrestifilippoQP

Quentin Prestifilippo

Software & Cybersecurity Engineer

€450/day
Nevers, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Quentin

Cybersecurity engineer by training and current CISO, I work on topics combining security, infrastructure, network, system, and software development.

My profile is versatile: I can assist a company in securing its environment, implementing best practices, managing access, backups, hardening systems, network administration, or improving an existing infrastructure. I can also develop digital tools tailored to a specific need: website, e-commerce, web application, mobile application, business tool, or automation.

What interests me most is understanding the real need, proposing an effective solution, and then building it properly. I like well-thought-out, maintainable, and documented projects when necessary, designed to last rather than quick fixes or solutions that are difficult to evolve.

I adapt easily to technologies and technical contexts. My goal is to provide a clear, robust, and useful response, whether it's securing an SME, structuring an infrastructure, or developing a custom tool.
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Nevers (up to 50km)

Experience

  • Nexson
    Chief Information Security Officer
    August 2025 - Today (10 months)
    Information system security management with both a technical and operational approach. Implementation of cybersecurity best practices, risk monitoring, access security, user awareness, and support for teams on infrastructure, network, and data protection topics.

    Involvement in continuous improvement of the security posture: vulnerability analysis, configuration hardening, procedure documentation, incident supervision, and technical recommendations adapted to the company's needs.
    Cybersecurity Network Administration System Administration Risk Management Active Directory
  • Nexson
    Apprentice Computer Security Engineer
    August 2022 - August 2025 (3 years)
    Garchizy, France
    Work-study program in computer security with missions focused on cybersecurity, infrastructure, and system administration. Participation in securing the information system, monitoring vulnerabilities, hardening workstations and servers, and implementing security best practices.

    Involvement in various topics: access management, supervision, technical documentation, user support, incident analysis, improvement of network/system configurations, and support for teams on security issues.

    This experience allowed me to develop a comprehensive approach combining technical skills, operational rigor, and understanding of business needs.

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Education

  • Engineering degree, Security / safety of information systems
    Institut National des Sciences Appliquées Centre Val de Loire
    2025
    Diplôme d'ingénieur, Sécurité / sûreté de l''information des systèmes informatiques
  • Engineering degree, Civil Engineering and Sustainable Construction
    Institut national des Sciences appliquées de Rouen
    2021
    Diplôme d'ingénieur, Génie Civil et Constructions Durables

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