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Vincent-P-essy/README.md

Hi, I'm Vincent Plessy 👋

DevSecOps & Security Engineer


👋 About Me

Incoming Apprenti Ingénieur Cybersécurité @ Société Générale (Oct. 2026) | MSc MBA @ Epitech Paris
Ancien Alternant Data & Automation @ SNCF Voyageurs | L3 Computer Science @ Université Gustave Eiffel

🌐 Portfolio : vincent-p-essy.github.io

  • 🔐 Interested in backend, systems and cybersecurity
  • 🐧 Linux user
Projets en C, Java et Python autour des systèmes, des jeux et de la sécurité applicative.

Selected projects

Project Technical focus
BackPack Hero Java, turn-based combat, inventory and equipment
Minecraft Clone TypeScript, WebGL, voxel generation and block interaction
CyberPass Next.js frontend and FastAPI backend for security evidence
Memory allocator C, manual memory management and linked blocks
Kernel Sentinel Go, eBPF and event replay for security detection

BackPack Hero turn-based combat


✍️ Latest Writing

📄 I built an automated DORA compliance engine in Python — here's what I learned about regulatory engineering
How I automated 200–400h of manual audit work using OPA/Rego policies, evidence vaults with immutability triggers, and CI/CD gates — with a deliberate 75/100 score to prove the detection actually works.


🏗️ Mon Écosystème Cyber & SecOps

Plutôt que des dépôts isolés, mon GitHub héberge un écosystème complet de détection, corrélation et traitement des incidents, conçu selon les principes de la Clean Architecture et du TDD.

[ pcap-analyzer ] (C Parser)
       │
       ▼ (JSON Flux)
[ threat-correlation-engine ] (YAML Rules) ◄─── [ vuln-digest ] (Threat Intel)
       │
       ▼ (Trigger)
[ incident-tracker-api ] (Flask REST RBAC) ◄─── [ llm-triage ] (AI Guardrails)
       │
       ▼
[ cyber-dashboard ] (MTTD / MTTR Real-time metrics)

[ dora-compliance-engine ] ──────────────────────► CI/CD Gate (DORA / ISO 27001)

🛡️ Ingénierie de Détection & Bas Niveau

  • pcap-analyzer : Analyseur réseau écrit en C pur. Détecteurs : Port scan, ARP spoofing, DNS tunneling. Output JSON.
  • threat-correlation-engine : Pipeline Loader → Correlator → Dispatcher sur fenêtres glissantes et règles YAML.
  • vuln-digest : Threat Intel quotidien NVD + CISA KEV + GitHub Advisories, scoring CVSS v3 bancaire, rapport HTML.

💻 Sécurité Applicative & Architecture

  • security-audit-logger : Clean Architecture .NET 8, TDD xUnit, CI/CD Trivy, Docker non-root.
  • incident-tracker-api : API REST Flask/PostgreSQL, JWT, RBAC 3 rôles, 97% test coverage.
  • llm-triage : Triage LLM sous contraintes DORA/PCI-DSS, prompts Jinja2 structurés.

⚖️ Conformité Réglementaire & DevSecOps

⚙️ Automatisation Horizontale

  • ci-security-gate : GitHub Action centralisée — entropie Shannon, pip-audit, Dockerfile lint.
  • cyber-dashboard : Console MTTD/MTTR temps réel, mode démo standalone.

💼 Expérience Terrain

  • SNCF Voyageurs (Transilien) : Scénar'Express — application d'aide à la décision temps réel au COT. Power BI, automatisation.
  • Apex 3D : Co-fondateur e-commerce, site de catalogue HTML/CSS/JS avec réponses prédéfinies dans le chat.

🎯 Certifications & Hard Skills

  • Cyber : Google Cybersecurity Professional, Fortinet FCF, Splunk SOC Essentials, Cisco Cyber.
  • Langages : C, .NET 8 (C#), Python (Flask), Bash, SQL (PostgreSQL), Java, JavaScript.
  • Ops : Docker, GitHub Actions CI/CD, Linux (Debian), Wireshark.

🧰 Tech Stack

Languages

Web / Backend

Systems / DevOps


📊 Stats & Activity


📬 Contact

I enjoy working close to the system (C, Linux) and building backend/data applications (Python, SQL).
Feel free to contact me for any opportunity.

Pinned Loading

  1. Cybersecurity-Projects Cybersecurity-Projects Public

    You will find my work on cybersecurity. This work has been useful in my professional life. Vous trouverez mes travaux concernant la cybersécurité. Ces travaux ont été utiles dans ma vie professionn…

    Python 1

  2. Security-Audit-Logger Security-Audit-Logger Public

    Audit trail and anomaly detection tool for REST APIs — .NET 8, Clean Architecture, JWT, Docker

    C#

  3. The-Wave-Music The-Wave-Music Public

    The Wave Music est une plateforme SQL musicale open-source qui permet aux utilisateurs de découvrir, écouter et gérer des morceaux de musique. Le site propose une interface intuitive pour naviguer …

    Python

  4. incident-tracker-api incident-tracker-api Public

    Backend REST API simulating a real-world cybersecurity incident management system. Built with Flask, PostgreSQL, JWT auth, RBAC, Docker, and tested at 97%.

    Python

  5. minecraft-clone minecraft-clone Public

    A Minecraft-inspired voxel world in the browser: infinite procedural terrain, trees, caves, day/night, break and place blocks. Three.js + TypeScript, zero art assets, playable in one click.

    TypeScript

  6. CyberPass CyberPass Public

    SaaS européen de preuves cyber, questionnaires assistés et passeports partageables.

    Python