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Guillaume TortroteauGT

Guillaume Tortroteau

Pentester

€125/day
Strasbourg, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Freelance pentester specialized in offensive security, I help companies identify and exploit vulnerabilities (web, network, Active Directory).

I worked for nearly a year at Root-Me Pro as a pentester and content creator, where I conducted audits and designed technical challenges (challenges, labs) based on realistic scenarios.

**Certifications**: OSCP, CRTE, CARTP, CCNA


Skills:

  • Web Pentest (OWASP Top 10, exploitation)
  • Active Directory (post-exploitation, privilege escalation)
  • Network & infrastructure
  • Challenge / Lab creation
  • Training
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Root-Me Pro,
    Cybersecurity Consultant
    CONSULTING AND AUDITS
    September 2025 - Today (9 months)
    Saint-Cyr-au-Mont-d'Or, France
    Pentest: penetration tests (infra, web, API,). Reporting: technical/executive reports. CTF: design and development of challenges. Training: cybersecurity training for schools and professionals.
    Cybersecurity Security Audit Microsoft Azure Active Directory Web
  • Freelance,
    Pentester
    November 2025 - Today (7 months)
    Strasbourg, France
    Pentest missions: penetration tests (web, API, infra). Deliverables: technical/executive reports. Client relations: scope definition, presentation, and follow-up. Quality & security: confidentiality and traceability.
  • Technicien de maintenance
    Maintenance Technician
    January 2016 - January 2024 (8 years)
    Troubleshooting: diagnostics and incident resolution. Procedures & support: operating procedures, training. Optimization: implementation of technical improvements. Project management: management, follow-ups, quotes.

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Education

  • Vocational Baccalaureate in Electrotechnics
    Lycée Louis Marchal
    2016
    BAC PRO électrotechnique
  • CARTP & CRTE, Altered Security OSCP, Offsec Cisco CCNA & CCNA CyberOps
    Cisco
    CARTP & CRTE, Altered Security OSCP, Offsec Cisco CCNA & CCNA CyberOps

Skill set

Categories