Available · cyber work-study from Sept. 2026
$ whoami --role

Josué Ouedraogo

Systems & Networks expert › focused on cybersecurity, offensive & defensive · Paris, FR

A prism splits light to reveal every color. That is how I approach a system: break it down to understand each weakness, then rebuild it, safer.

3+
years of experience
MSc
Master's · ESGI
3
CTF platforms
01$ cat about.md

From attack to defense,
a complete view of security.

My name is Josué Ouedraogo. After a two-year IT degree (BTS SIO) and an expert track at ESGI, I am completing a Master's degree in Systems, Networks & Security (RNCP level 7), with a second year in work-study starting September 2026.

My field ranges from running production infrastructure (Active Directory, VLAN segmentation, EDR, automation) to offensive security: reverse engineering, tool development, CTFs. This dual background lets me think about a system like an attacker while building it like a defender.

My goal: to become a security consultant and architect, mobile and independent, able to step in wherever infrastructure makes the difference.

02$ ls -l ./expertise

Five bands of the same spectrum.

Each module is a field I practice, from pure offense to governance.

module [01]

Offensive security

  • Pentest & CTF
  • Reverse engineering
  • Tool development
  • Binary analysis
module [02]

Defense & SIEM

  • Splunk · ELK · Wazuh
  • IDS / IPS
  • Incident response
  • Hardening
module [03]

Networks

  • Firewall · VPN · PKI
  • VLAN · 802.1X / NAC
  • OSPF routing · VLSM
  • WAN architecture
module [04]

Systems

  • Linux · Windows Server
  • Proxmox virtualization
  • Docker · LXC
  • Ansible · Terraform
module [05]

Governance

  • ISO 27001
  • NIST
  • GDPR
  • Technical documentation
03$ tail -f career.log

Three roles, one common thread:
infrastructure and its security.

[2024-10 → 2025-11]
FREELANCE

Systems & Network Administrator @ ECB

Freelance contract · 13 months
  • Administration of Linux / Windows Server systems, Active Directory, LDAP, GPO.
  • Deployment of antivirus / antimalware solutions and automation with Bash & PowerShell scripts.
  • Writing technical procedures and user guides.
[2022-11 → 2024-09]
WORK-STUDY

Systems & Network Administrator @ Tod's France

3 weeks / 1 week schedule
  • Configuration and management of network equipment: switches, routers, firewalls, EDR, 802.1X / NAC, VLANs.
  • Vulnerability management, network incident resolution and account administration through AD.
  • Windows, macOS, Microsoft Azure, Intune and Citrix environments.
[2022-03 → 2022-05]
INTERNSHIP

Systems & Network Technician @ La Salle St Rosaire

Training internship
  • Installation of Windows / Linux servers, AD, DNS and DHCP configuration, deployment of network equipment.
  • Troubleshooting hardware and software incidents, deploying business software.
04$ cd ./projects && ls

Where theory turns binary.

A selection of work, from offensive development to low-level systems.

~/rat-c2P/01
Offensive security

RAT : Remote Administration Tool

Multi-agent client-server tool over encrypted TCP sockets (TLS). Modules: keylogger, hashdump (SAM/shadow), screenshots, webcam stream, interactive shell. Antivirus evasion, Docker deployment, pytest test suite.

PythonSockets TLSDockerPoetry
~/crackme-x64P/02
Reverse engineering

Crackme & binary analysis

x64 crackmes built without external libraries, protected by one-way hashing. A binary patcher written in assembly: surgical, size-preserving modification of a target. Backed by analysis writeups.

x64 AssemblyLinuxReverse engineering
~/infra-opnsenseP/03
Infrastructure

Secure open-source infrastructure

Proxmox server with an OPNsense firewall as the subnet entry point. Provisioning of Debian LXC containers: AdGuard Home (DNS), Passbolt (passwords), Firefly III. Documented for a full rebuild.

ProxmoxOPNSenseLXCLPIC2
~/rust-osP/04
Low-level systems

Bare-metal OS in Rust

A bare-metal operating system focused on memory safety: memory management, allocator, raw pointers, custom panic handler. Working within no_std constraints and unsafe blocks.

Rustno_stdBare-metal
~/wan-designP/05
Network architecture

WAN design & security plan

WAN design for more than 1,000 hosts: VLSM addressing plan, OSPF routing and a structured network security plan. An end-to-end approach to segmentation and resilience.

CCNAVLSMOSPF
~/homelab-elkP/06
Homelab

Monitoring & detection homelab

Permanent personal lab: Proxmox hypervisor, ELK stack for log collection and analysis, automation with Ansible. A testing ground for detection and hardening.

ProxmoxELKAnsible
05$ cat education.txt certs.txt

Continuous progress,
from the field to the degree.

Education

Master's · Systems, Networks & Security Expert
ESGI Paris · Systems & network architecture, IT security · RNCP36296 (level 7)
2025 → 2027
Bachelor's level · Systems, Networks & Security Project Manager
ESGI Paris
2023 → 2024
Two-year degree · BTS SIO, infrastructure track (SISR)
IMCP · Infrastructure, systems & network solutions
2021 → 2023
FR Native
EN C1

CCNA certifications

Introduction to Networks
Cisco CCNA
Switching, Routing & Wireless Essentials
Cisco CCNA
Enterprise Networking, Security & Automation
Cisco CCNA
$ ./contact.sh --open

A system to secure?

Work-study, consulting or just a technical chat: the channel is open. I reply quickly, and gladly.