Hi, I'm Matéo 
Hey there! I’m a French cybersecurity student with a passion for technology that started when I was just 11 years old. I’ve been learning to code ever since — completely self-taught, driven by curiosity and the desire to understand how things work under the hood.
I’m a full-stack developer who loves exploring every corner of computer science — from backend systems to game dev, AI, and beyond. When something sparks my interest, I dive in headfirst until I master it. I can’t stand staying idle; there’s always something new to build, break, or learn.
My main interests lie in cybersecurity 🔐 and OSINT (Open Source Intelligence) 🕵️♂️, but I enjoy working with all kinds of technologies and programming languages.
💡 What drives me: curiosity, creativity, and the constant pursuit of improvement.
This is a short selection of my recent projects — an excerpt from my full portfolio available at https://mateo.callec.net. Each project reflects my focus on clean design, thoughtful development, and a user-centered approach.
Created OSINT tools for online information analysis.
Developed an OSINT project analyzing unconventional open data indicators — such as local activity patterns — to identify potential significant events near specific locations.
Designed a multi-protocol IDS capable of detecting, alerting on unauthorized access attempts and act to stop a threat, strengthening system security.
Developed pentesting utilities including ARP spoofing, port scanners, and other security testing tools to evaluate network and system vulnerabilities.
Open-source anti-spoofing software detecting ARP attacks and untrusted DNS responses, designed to protect networks from common attack vectors.
Built a fast web browser with inverted indexing, capable of retrieving information across thousands of pages in under 0.3 seconds.
Developed two operating system kernels with full filesystem support; one as a solo project, another during university coursework.
Full-stack development including front-end, back-end, database integration, payment systems, and custom API creation for multiple projects.
Created a platform to prevent school harassment, including AI moderation tools for automated content review.
Personally coded and experimented with various malware types (ransomware, keyloggers) for educational purposes, to better understand cyber threats and defensive strategies.
Automated FTP client for installing a CMS (also created by myself).
Built simple tools to improve software development workflow.
• Beacon Flow
• docker-manager.sh
• MAVU
Other tools & extensions.
🌐 My website: https://mateo.callec.net
✉️ Mail: mateo@callec.net
🔑 Encryption: Download
📸 Instagram: @mateocallec
