đź‘‹ Hello, welcome to my portfolio

I am Matthieu Greiner
DevSecOps & Security Engineer.

Engineering student at EPITA building secure cloud infrastructure, security automation, and DevSecOps workflows.

About Me

Pursuing my Master's at EPITA, majoring in Cybersecurity.

Passionate about low-level programming, systems security and infrastructure — from kernel internals to cloud-native environments.

Building hands-on security engineering experience through my apprenticeship at SFR Business, then joining intuitem in September 2026.

EPITA Cybersecurity
Bangkok Intl. Exchange
Security Engineer Long-term SecOps Goal

My Journey

2026 - 2028 Apprenticeship

DevSecOps Engineer (Apprentice) more

intuitem · Vélizy

Starting in September 2026, joining the team behind CISO Assistant, the open-source GRC platform, to work across full-stack engineering and DevSecOps.

2025 - 2026 Apprenticeship

SSI Engineer (Apprentice) more

SFR Business · Paris

IT Governance, Risk Analysis, and internal AI development. Built security tooling in Go, automated GRC workflows, and contributed to NIS2/DORA compliance efforts.

2025 International Exchange

Chulalongkorn University (Thailand)

Exchange semester in Bangkok focusing on advanced Cybersecurity and Cloud Computing.

2023 - 2028 Education

EPITA - School of Engineering & CS more

Specializing in Cybersecurity with a focus on systems and networks.

Technical Arsenal

C
C Programming
Python
Linux / Bash
Network Security

Certifications & Methodologies

CCNA

In Prep

Cisco Associate

Network fundamentals and security automation.

EBIOS RM

Certified

Risk Manager

ANSSI standard for risk assessment and management.

Featured Projects

Selection of academic and personal work.

Public project

SecureFlow

DevSecOps

A production-inspired platform that makes secure delivery visible: an authenticated API, dashboard, database, containers, and automated security checks in one workflow.

React
FastAPI
Postgres
Docker
CI scans

Evidence

SemgrepGitleaksTrivyJWT + Argon2
View source & architecture
Professional work · details limited

CyberTool

Go

Internal security tooling built during my SFR Business apprenticeship to reduce repetitive operational work and support governance workflows.

Automation

GRC support

Reporting

Context

The work is not public by design. This card focuses on the engineering scope without exposing internal systems or data.

Public project

wlkom-rootkit

Linux kernel

An EPITA SYS2 educational Linux kernel module project, built in an isolated two-VM lab to explore low-level systems, persistence concepts, and secure client/server communication.

Kernel module

Private VM lab

C + Python

Evidence

QEMU isolationTCP protocolArgon2id
View source & architecture
Starting September 2026

CISO Assistant

Open source GRC

Joining intuitem to contribute to CISO Assistant, an open-source GRC platform, at the crossroads of product engineering, cloud infrastructure, and security.

Django + Svelte

Multi-cloud

Kubernetes

Status

This is an upcoming apprenticeship. I’ll add concrete contributions once the work begins.

Beyond the Keyboard

Guitar

Passionate about music and riffs on electric guitar.

Game Dev

Developed a complete game from scratch in my first year of integrated prepa.

Coding

Exploring new languages and automating daily tasks.

Open School Days

Active representative at EPITA open days and higher education fairs, presenting the school's programs to prospective students.

CTF & Competitions

Keeping an eye on cybersecurity competitions and CTF events, sharpening offensive and defensive skills beyond the classroom.

Want to chat about security, music, or code?

Send me an email