Currently · Airbus Defence & Space

Mathieu
LE CALONNEC

Cybersecurity Engineer

Google SecOps · Cloud GCP · SOC · Blue Team
ISEN-graduated engineer specializing in defensive security. Detection, incident response and Cloud & On-Premise security daily at Airbus D&S in Toulouse.

1+ Year at Airbus D&S
ISEN Engineering Degree
.ENV Defence · Banking
Mathieu Le Calonnec
Google SecOps Chronicle Bitdefender Trellix Wireshark Elastic Stack SIEM Incident Response Threat Detection Log Analysis CTI / OSINT Forensics Active Directory Cloud GCP AWS OVHCloud Python C# PowerShell Docker Cisco CCNA Google SecOps Chronicle Bitdefender Trellix Wireshark Elastic Stack SIEM Incident Response Threat Detection Log Analysis CTI / OSINT Forensics Active Directory Cloud GCP AWS OVHCloud Python C# PowerShell Docker Cisco CCNA

Who am I?

ISEN-graduated cybersecurity engineer at Airbus Defence & Space in Toulouse. Blue Team oriented: detection, incident response and Cloud & On-Premise security on Google SecOps, Bitdefender and Trellix. Experience across Defence, banking and direct client (freelance) environments. Personal projects and CTF labs on the side.

SOC & SIEM

Managing and evolving SOC solutions on Google SecOps at Airbus D&S. Detection rule writing, event correlation and log analysis.

App Security & CTF

Practice on RootMe, HackTheBox and TryHackMe (CTF, BurpSuite, Metasploit). Understanding attack vectors applied to Blue Team detection and defence.

CTI & OSINT

Cyber Threat Intelligence applied to the SOC context. Threat analysis, IoC tracking and active security monitoring.

Cloud Security

Implementing security rules on Cloud GCP. Experience with AWS and OVHCloud. Certificate management in production environments.

Forensics & Logs

System & application log forensic analysis. Built a personal Python SIEM for HTTP Apache log analysis (SQLite, FastAPI, Leaflet).

SecDevOps

Secure CI/CD with Jenkins and GitLab CI, Docker. Pipeline vulnerability fixing, SAST and dependency management.

Incident Response

Qualification, investigation and remediation of security incidents. Vulnerability tracking and continuous improvement of SOC processes.

Network & Cryptography

Cisco CCNA 1 & 2, Firewall, network administration. Applied cryptography and certificate management.

Career & Education

  • Airbus Defence and Space
    ● Current position
    2025 — Present

    Cybersecurity Engineer

    Airbus Defence & Space · Toulouse

    In an industrial Defence environment. Managing and evolving SOC solutions on Google SecOps, implementing Cloud GCP security rules, log analysis, incident management and certificate lifecycle.

  • Crédit Mutuel Arkéa
    2023 — 2024

    QA & DevOps Engineer

    Crédit Mutuel Arkéa

    In a banking environment. Work-study contract. Agile project management, security vulnerability fixes, library updates, code review and CI/CD deployment.

  • isen-brest
    2021 — Sept. 2024

    Engineering Degree · Graduated Sept. 2024

    ISEN Brest

    General engineer specializing in cybersecurity. Cryptography, forensics, CTI/OSINT, Cisco CCNA and risk management. CVUT Prague internship (Summer 2023) completed during this programme.

  • cvut
    Summer 2023 · During ISEN studies

    International Intern

    CVUT Prague

    Czech Institute of Informatics, Robotics and Cybernetics. Medical data analysis via smartwatch (Xiaomi Mi Band 6). Report available here.

  • isen
    2019 — 2021

    Preparatory class

    ISEN Rennes

    Integrated preparatory cycle at ISEN Yncréa in Rennes, Computer Science and Networks (CIR) stream.

  • joseph-loth
    2019

    Scientific Baccalaureate

    Lycée Joseph-Loth · Pontivy

    Scientific baccalaureate with Engineering Sciences (SI) option.

Portfolio

Personal, professional and academic projects — from cybersecurity to embedded development.

Personal & professional projects
Academic projects
SOON
Sony Vegas Pro 16 · 2022
Aftermovie
Video editing
SOON
Admin Linux · C · 2022
Controllable LEDs
Embedded system — BeagleBone
SOON
C · STM8 · Electronics · 2022
Pulse Oximeter
Embedded system
SOON
Symfony · React · MySQL · 2022
Cetacean Strandings
Full-stack web application
SOON
Figma · HTML · CSS · React · 2021
Controversy
Collaborative research site
SOON
HTML · CSS · PHP · JS · AJAX · 2021
ISEN CAR
Student carpooling platform
SOON
C++ · Qt · 2021
SKDP
Space Invader video game
SOON
Sony Vegas Pro 16 · 2022
BDE Trailer
Video editing
SOON
HTML · CSS · JS · 2020
SoftAnime
Company showcase website

Get in touch

Open to discussions about opportunities or collaborations in cybersecurity.

mathieulc@portfolio — zsh

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Mathieu Le Calonnec

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email     mathieu.le.calonnec.pro@gmail.com

linkedin  linkedin.com/in/mathieu-le-calonnec

location  Toulouse, Occitanie, France

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position  Cybersecurity Engineer — Airbus Defence & Space

open to  Discussions, missions, collaborations

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📍 Toulouse, Occitanie, France

Copyright © Mathieu Le Calonnec 2025 — Version 1.0

Licenses