Alejandro
Martínez Ronda
Double-degree Mathematical & Computer Engineer focused on post-quantum cryptography and its mathematical foundations.
Who I am & what I've studied
A snapshot of my background — profile, studies and hands-on experience. Swipe right for experience →
I pair mathematical rigor with software to build secure, verifiable systems. My bachelor's thesis implements a lattice-based (LWE) scheme from scratch and studies the NIST standards ML-KEM and ML-DSA, backed by real experience in data engineering and machine learning.
Learning With Errors (LWE)
Post-quantum, lattice-based cryptography
My bachelor's thesis in Mathematical Engineering studies how one idea — adding a little calibrated noise to plain linear algebra — turns into hardness that resists even quantum computers, and how that hardness is the foundation of the new NIST post-quantum standards.
- The quantum threat — why Shor's algorithm breaks RSA and ECC.
- Lattices — a new kind of hardness (SVP / CVP, good vs. bad basis).
- Learning With Errors — linear algebra made hard by calibrated noise.
- Theoretical guarantee — Regev's worst-case to average-case reduction.
- From theory to standards — Regev encryption, ML-KEM (Kyber) and ML-DSA (Dilithium).
- Implementation & experiments — a scheme built from scratch and the noise / modulus / dimension trade-off.
Personal projects
A selection of things I've built, grouped by focus. Swipe sideways within a row to see more.
Cryptography & Security
2Machine Learning & AI
5Data & Analytics
2Mathematical Foundations
1Let's talk. I'm open to
opportunities and collaborations.
My everyday tools
Small utilities I use often, built to work instantly without leaving the page.
Word → PDF
Convert a .docx document to PDF, keeping the formatting.
Images → PDF
Combine one or more images (JPG/PNG) into a single PDF.
More, coming soon
This space grows with you: compress PDFs, merge/split, format converters… added as new cards.