guest@ambroise-krzanowski:~$ whoami
AmbroiseKRZANOWSKI
Developer & cybersecurity specialist
About
~/aboutDeveloper and systems & network administrator, I put both trades to work for cybersecurity: I know how a system is built, and so how it is defended. My goal: join a security team and help protect critical infrastructure.
- Education
- Master in Cybersecurity, HEA Arras
- Apprenticeship
- Exacom & Sinergence, systems & networks
- Development
- TypeScript, Next.js, Laravel, Python, C#
- Systems & networks
- Linux, Proxmox, pfSense, VoIP
- Cybersecurity
- SOC, SIEM, IDS, pentesting, governance
Projects
~/projectsHomelab SIEM / SOC
A full SOC in my homelab for a team study project: the SOCFortress stack on Proxmox, a port mirror for Suricata and Zeek, and Wazuh rules and Graylog pipelines written for the lab.
Wazuh / Graylog / Suricata / Zeek / TheHive / Proxmox VE
View project
- 2026Terminal portfolioA portfolio built like a terminal session: a command palette, ASCII canvas backgrounds including a ray-traced black hole, a hidden console, a SQLite admin and a per-request nonce CSP.Next.js / React / TypeScriptActive
- 2026HermesIAssistantWindows desktop AI assistant (Tauri 2, Rust, Svelte 5): local “Hey Hermes” wake word, voice, chat, a coding agent and consent-based access to PC folders, connected to my self-hosted Hermes agent.Tauri / Rust / SvelteActive
- 2026Proxmox HomelabThe infrastructure that hosts my projects: two Dell servers in a Proxmox VE cluster behind a virtualized pfSense, a network split into VLANs, backups, monitoring and a log of every intervention.Proxmox VE / pfSense / WireGuardActive
- 2026GLPI dashboardInternal Laravel tool that queries a GLPI database read-only: filterable metrics, resolution times in business hours, CSV export and customer ratings collected from the ticket closure email.Laravel / PHP / MySQLIn progress
- 2025Call StatsPHP call dashboard: imports the CSV exports of an IP phone system, converts them into one XML file per day and computes daily and weekly statistics, with charts and a PDF export.PHP / XML / Chart.jsArchived
Experience
~/experience- 2025 — PresentEDUCurrent
Master in Cybersecurity
HEA Arras — ISITECH
Network & data security, cloud infrastructure, governance, compliance, audit, standards, GDPR, SIEM, pentesting, risk management.
- 2024 — PresentEXPCurrent
Systems & Networks Technician
Exacom & Sinergence — Apprenticeship
Deployment and maintenance of telecom and IT infrastructure. VoIP solutions, virtualization, managed services, technical support in a multi-client B2B environment.
- 2024 — 2025EDU
Bachelor's in Computer Science
HEA Arras — CNAM
Programming, databases, operating systems, networking, project management.
- 2022 — 2024EDU
BTS SIO (SLAM) + Engineering Prep
Baudimont Pôle Sup' + Junia ISEN
Web/application development, networking, project management, TOEIC preparation.
- 2022 — 2023CERT
Cybersecurity MOOC
ANSSI
Cybersecurity certification, personal data security awareness.
Skills
~/skillsGovernance
5- Risk management
- Compliance & audit
- GDPR
- ISO 27001
- Security policies
Infrastructure
6- Linux
- Networking
- Kubernetes
- Terraform
- Virtualization
- VoIP
Skills marked ↗ lead to the projects that use them.
Blog
~/blog- AI doesn't replace me: how I work with it in dev and opsA month of coding and running my homelab with an AI agent: what I delegate, what I keep, the written guardrails, and what it really changes, numbers and mistakes included.7 min read
- Cloudflare Tunnel: publishing my site from my homelab without opening a single portMy portfolio runs on a VM in my homelab, and no port is open at home. How the outbound tunnel works, the config, what I locked down around it and the traps I hit.6 min read
- ReDoS: the email regex that could freeze my portfolioAn innocent-looking email validation regex backtracked in quadratic time. How I measured it, why it blows up, and the three-layer fix.4 min read
Something to secure or an idea to build?
Let's talk cybersecurity, infrastructure or development. I'd be glad to connect.