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Guillaume WantiezGW

Guillaume Wantiez

Linux Kernel & Driver Developer

€550/day
Paris, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Specializing in C system development and ARM architecture, I focus on direct hardware-software interactions. My expertise includes Linux driver development, virtualization, and the advanced use of debuggers such as GDB and Syzkaller for crash and vulnerability analysis.

As the co-founder of a system security laboratory, I notably designed an ARMv8-A hypervisor and a deterministic NVMe driver for RISC-V processors. I provide the technical rigor and problem-solving skills necessary to address critical low-level challenges in your embedded systems or security projects.

I am fully bilingual in French and English, capable of communicating professionally in both languages to support international collaborations.

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Spécialisé dans le développement système en C et l’architecture ARM, je concentre mon activité sur les interactions directes avec le matériel. Mon expertise inclut le développement de drivers Linux, la virtualisation et l'utilisation avancée de débogueurs comme GDB et Syzkaller pour l'analyse de crashs et de vulnérabilités.

Co-fondateur d'un laboratoire de sécurité système, j'ai notamment conçu un hyperviseur ARMv8-A et un driver NVMe déterministe pour processeurs RISC-V. J'apporte cette rigueur technique et ma capacité à résoudre des problématiques de bas niveau critiques pour vos projets de systèmes embarqués ou de sécurité.

Je suis à l'aise autant en français qu'en anglais et suis capable de communiquer de manière professionnelle dans les deux langues.
  • French

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • System and Security Student Lab (LSE)
    Co-founder System
    EDUCATION AND E-LEARNING
    September 2023 - Today (2 years and 9 months)
    Paris, France
    Co-founded a System and Security Association (LSE) to foster collaboration on projects like BSP implementation and conducted corporate audit missions generating $3,000 in revenue. Led a CTF team to a 2024 Top 10 French ranking on CTFtime, competing in events including DEFCON, HITCON, and SECCON (87th). Organized technical events for 30+ students and practiced advanced tooling including IDA, BinaryNinja, Ghidra, Syzkaller, and Volatility
    Reverse Engineering Linux Kernel IDA Wireshark C
  • Fuzzinglabs
    Linux Drivers Vulnerability Researcher Intern
    CONSULTING AND AUDITS
    September 2023 - February 2024 (5 months)
    Orges, France
    Conducted state-of-the-art Linux kernel security research using the Syzkaller framework to fuzz 15+ in-tree and out-tree drivers. Developed custom fuzzing harnesses that increased code coverage by 30% and analyzed 100+ crashes to identify memory corruptions. Authored a 50-slide technical audit on Syzlang specifications and engineered 5 specialized labs used to train corporate security professionals.
    Linux Kernel Fuzzing Syzkaller Driver Development C
  • EPITA Research Laboratory
    Student Researcher
    EDUCATION AND E-LEARNING
    January 2023 - January 2024 (1 year)
    Paris, France
    Reviewed academic research on pervasive systems to model a pervasive system resource manager simulator using CloudSim under supervision. Corrected the existing model and improved clarity and efficiency. Completed implementation of basic Java classes for real-time context events and shared work through talks.
    Report Writing Academic Research

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Education

  • Master of Science in Computer Engineering - United States of America
    Stevens Institute of Technology
    2026
    MoS : Computer Engineering
  • Master of Science in Computer Science - France
    EPITA
    2026
    MoS : Computer Science

Skill set

Categories