Short Bio

I'm following my love for Information Visualization through a PhD in Informatics at the Department of Informatics of the Pontifical Catholic University of Rio de Janeiro (PUC-Rio), where I work with Profª Simone Barbosa. I am a member of the R&D Labs ExACTa and IDEIAS-SERG. My research interests lie in human–data interaction, with a focus on integrating techniques and methods from data visualization, data science, and human–computer interaction.

I am gaining further experience as Professor of full-stack development as part of Software Engineering digital specialization at Central Extension Coordination (CCE) of PUC-Rio.

In industry, I've worked as web developer, data scientist, and consultant. I have worked on projects for multiple clients across industries (Oil and Gas, Digital Transformation, Legal).

I also love to travel, garden, practice yoga, take long walks with my dog, and discover new cafés.

Education

Doctor of Philosophy in Informatics (PhD)
Pontifical Catholic University of Rio de Janeiro (PUC-Rio)
Current
Master of Computer Science
Pontifical Catholic University of Rio de Janeiro (PUC-Rio)
2019 - 2023
Bachelor of Computer Science
Federal University of Ceará
2014 - 2018

Expertise

Visualization & Data Science

I create interactive data visualization systems that help people explore, understand, and communicate data. I design effective and accessible solutions guided by a user-centered approach and grounded in visualization research.

Mixed-Methods Research

I collaborate with interdisciplinary teams on research projects, and have published in leading visualization and human-computer interaction venues (IHC, INTERACT). My work combines a variety of methods, including rapid prototyping, visual data inspection, interviews, surveys, usability testing.

Coding & Web Development

I use JavaScript, Vega, and D3 to develop data visualization tools. I build reactive web applications with React, work with data in Python, and develop back-ends using Flask and Django.

Teaching & Mentoring

I teach full-stack web development and give guest lectures on data visualization. Over the past several years, I've also tutored students in full-stack development and API integration.

Publications

2026

Vis-OntoQ: An Ontology-Guided Framework to Support Non-Expert Analysts Formulating Data Questions during Visual Exploration

Braga, D.
Proc. of the Extended Abstracts of the 2026 CHI Conference on Human Factors in Computing Systems (1-5)
2025

Arcano: Generating Data Questions to Support Non-Expert Analysts in Hypothesis Formulation

Braga, D., Lima, R., Santos, J., Oliveira, G., Silva, M. & Barbosa, S.
IFIP INTERACT
2020

Revisiting visualization task taxonomies: specifying functions for the data transformations stage

Rodrigues, A., Barbosa, G., Lima, R., Braga, D., Lopes, H., & Barbosa, S.
International Conference on Human-Computer Interaction (655-671)
2019

Handbags classification model via deep learning

Braga, D., SS, L., Souza, C., & da Silva, T.
International Conference on Machine Learning and Data Mining (1-11)
2019

Time series forecasting to support irrigation management

Braga, D., da Silva, T., Rocha, A., Coutinho, G., Magalhães, R. P., Guerra, P. & Barbosa, S.
Journal of Information and Data Management (66-80)
2018

Time series forecasting for purposes of irrigation management process

Braga, D., da Silva, T., Rocha, A., Coutinho, G., Magalhães, R., Guerra, P., & de Macêdo, J.
Simpósio Brasileiro de Banco de Dados (217-222)

Get In Touch

I'm always interested in discussing new opportunities and collaborating on research projects.