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Curriculum vitae

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Z3tra

Web Security Researcher

Building secure applications, researching web vulnerabilities and continuously learning through practice. Looking for an apprenticeship in application security, starting September 2026.


Experience

Cybersecurity Intern · Oteria

2025

Second placement, focused on web application security: reviewing applications, reproducing findings and turning them into reports someone could act on.

  • Assessed web applications for common classes of vulnerability, working from an agreed scope and a written methodology
  • Reproduced and documented findings with a clear impact statement and a minimal proof of concept
  • Wrote remediation guidance aimed at the developers who would implement it, not at other security people
  • Retested fixes and closed findings only once the underlying cause was addressed

Cybersecurity Intern · Oteria

2024

First placement. Broad exposure: how a security team actually operates day to day, and how the work is organised before anyone touches a tool.

  • Supported assessments by handling reconnaissance and information gathering within scope
  • Set up and maintained lab environments used to reproduce issues safely
  • Reviewed configurations against hardening baselines and documented the gaps
  • Kept internal documentation current as procedures changed

Projects

HackutenA CTF platform for learning cybersecurity

2025 — present

Hackuten is a capture-the-flag platform covering several areas of cybersecurity — web, reverse engineering, cryptography, forensics and more. It exists to make the first steps into the field less discouraging: challenges that teach something specific, in an order that makes sense, with infrastructure that does not get in the way.

Next.js · TypeScript · TailwindCSS · PostgreSQL · Docker · Linux · REST API

OrbyteAn end-to-end encrypted messenger

2026 — present

Orbyte is an encrypted messaging application in the spirit of Session: private conversations that do not require a phone number to start, and a server that is designed to know as little as possible. It is in active development — the parts that are built are built carefully, and the parts that are not are honestly labelled as such.

TypeScript · React · Next.js · Node.js · PostgreSQL · Docker

BatelysLone worker safety, one button at a time

2026 — present

Batelys protects people who work alone. You check in when you arrive, then press a button now and then to confirm you are fine. Miss a check-in — because you fell, collapsed, or simply cannot reach your phone — and an alert leaves on its own, with your position, escalating through your chain until someone responds.

TypeScript · Next.js · React · Node.js · PostgreSQL · REST API · Docker


Skills

Languages
TypeScript · Python · JavaScript · SQL · HTML · CSS
Frameworks
Next.js · React · TailwindCSS
Technologies
Git · GitHub · Docker · REST API · Linux · PostgreSQL
Security tooling
Burp Suite · Caido · OWASP ZAP · ffuf · Gobuster · Nmap · SQLMap · Hashcat · John the Ripper · Wireshark · Metasploit
Systems
CachyOS · Windows · macOS

Certifications

In preparation: OSCP (Offensive Security Certified Professional, OffSec, target 2026); OSWE (Offensive Security Web Expert, OffSec, target 2027).


Languages

French — Native · English — Professional


In short

Started in security
2023
Focus
Web application security
Currently
Preparing the OSCP
Looking for
An apprenticeship, Sept 2026

Full detail, write-ups and project deep-dives at z3tra.com.