juan_cardesa.sosa

I build software. And test what isn't secure.

Final-year Software Engineering student at the University of Seville, focused on backend engineering and Application Security. I build tested, practical tools: Secret Scanner CLI, PhishLens and the local-first Error Log C1. Available now for a curricular internship.

juan — ~/recon
Juan Cardesa
Juan CardesaSevilla, ES

I'm in the final year of Software Engineering at the University of Seville, with every course passed, and I learn backend engineering and Application Security by shipping real projects: a phishing detector, a secret scanner, a local-first study tool and a honeypot lab. Every project starts from the same question: how does this work under pressure? And none is finished until it ships with tests and CI.

Security appeals to me because it forces two perspectives at once: the builder's and the attacker's. So I write software assuming someone will try to break it.

English
B2 Cambridge certified Preparing for Cambridge C1 Advanced
Right now
Updated November 2026
Internship

Looking for a curricular internship to start as soon as possible. Along with my final-year project, it is all that's left of my degree; I expect to graduate in 2027.

UniRaid

Preparing the website for Los Pata Negra, our team for UniRaid 2027.

Projects I've built.

Backend + application security

From Security+ to OSCP.

The plan: fundamentals first, then cloud, then offensive security. Alongside it, I keep building tools like the ones above.

After Security+: eJPT, then OSCP.

Stack, by project.

Also in my toolkit:

UniRaid.

I'm taking part in UniRaid 2027 with Los Pata Negra, a team joining this student solidarity rally across Morocco in a Renault Super 5 to deliver humanitarian aid to underserved communities.

Team website: coming soon

UniRaid route across Morocco: Tanger start/finish, through Rabat, Marrakech, Merzouga, Aoufous and El Hajeb

Something to build or break?

I'm looking for a curricular internship to start as soon as possible, and I'm open to collaborations and projects. The fastest way to reach me:

Download CV GitHub LinkedIn