01 / Personal file

Mathematics Graduate | MAMME Student
Mathematics graduate and MAMME student interested in neuroscience, finance, biology and data science. I use mathematical modelling, statistics and code to study decision-making systems and build personal tools. In my free time, I find joy in surfing.DJing.producing music.playing guitar.
Mathematics
Computational Neuroscience
Data science
Web development
02 / Trajectory
A compact view of the research, mathematics and applied learning experiences behind my work.
Jan 2026 - July 2026
Brain Circuits and Behavior Lab (IDIBAPS)
Graduate researcher studying the fluctuations in behavior on 4 different tasks in mice through Hidden Markov models. This project was tied to my Master's Thesis. It aims to understand the underlying strategies that mice use to solve tasks and how these are shaped by the effects of NMDAr hypofunction. A python package was developed with the used models and is published in pypi under the name glmhmmt.
Jul 2024 - Dec 2025
Brain Circuits and Behavior Lab (IDIBAPS)
Internship conducting experiments with mice using an automated behavioral system (Training Village) to study the effects of anti-NMDAR encephalitis on working memory. Tasks included statistical analysis with Generalized Linear Models (GLMs) and the development of a decision-making model as part of my Mathematics Bachelor’s Thesis (TFG). The project combined data analysis and mathematical modeling to provide deeper insights into the dynamics of cognitive processes.
Sep 2025 - Present
Universitat Politècnica de Catalunya (UPC)
Sep 2021 - Jun 2025
Universitat Politècnica de Catalunya (UPC)
July 2023
Universitat Politècnica de Catalunya (MESIO UPC-UB Summer School)
Conducted by a lead data scientist at N26. The course focused on financial problems, such as credit risk, fraud detection and default rate prediction. A kaggle competition centered on predicting default rates of businesses was held at the course, where I achieved the winning position.
Jul 2021
Institut de Ciències Fótoniques (ICFO)
A two week course on image compression algorithms in Matlab and information theory held at ICFO in the Theoretical Quantum Nano-Photonics Group.
2022
Participant at the program. LYISF is a two-week science program held at Imperial College of London and the Royal Geographical Society with participants from over 70 countries. I attended lectures on a variety of science topics and visited research centres such as the Oxford Nuffield Department of Clinical Neurosciences.
Jun 2019 - Sep 2022
Fundació Catalunya La Pedrera
Selected to participate at the programme Youth and Science, managed by Fundació Catalunya La Pedrera. A three-year programme to encourage scientific vocations of fifty talented young people with a drive to research. Funded to participate in LIYSF and the ICFO summer course (An introduction to image processing).
03 / Work index
Personal work across mathematical modelling, Python tools, machine learning and technical publishing.
01
Python
An interactive TOML config editor widget for Jupyter and marimo notebooks built with anywidget. Check out the pypi peckage!
02
LaTeX
A repository including some useful templates for LaTex and my own class.
03
Python
Winning ML model from the 2023 MESIO UPC-UB Kaggle contest, predicting bankruptcy odds for Polish companies.
04
C++
Code developed to enter the contest inside the FME Algorithms course 2022.
04 / Notes
Scientific, technical and educational activities that shaped how I approach projects.
01
Awarded as best poster in the first session of the 2025 Barcelona Computational, Cognitive and Systems Neuroscience Community (BARCCSYN) Conference
02
Winner of the subcategory Facultat de Matemàtiques i Estadística (FME-UPC) prize in a competition of mathematical education videos organized by Numerical Factory in 2023.
03
Classified for the national phase of the European Youth Parliament (EYP) as Wildcard (participant classified without his team) in 2021.
04
Classified for the national phase of the Spanish Biology Olympiad in 2021.
© 2026 Javier Rodríguez Martínez. All Rights Reserved.