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chimdos/README.md

Hi, I'm Daniel Martins!!

Computer Science Student | Software Development & Applied Data Science

📍 Based in Sorocaba, Brazil


About

Computer Science undergraduate at Universidade de Sorocaba (UNISO) with a technical background from ETEC Fernando Prestes.

I use applied data science, statistical modeling, and full-stack development to build cool stuff.


Public Work & Open Source

Python, NumPy, Object-Oriented Programming

  • Built an open-source Python analytical engine to process match statistics from competitive Brawl Stars tournaments.
  • Designed a multidimensional rating algorithm inspired by esports frameworks (HLTV), implementing elastic power-curve normalization to mitigate outlier bias in small samples.
  • Modeled conditional game logic across 100+ entities, including objective weight matrices and synergy modifiers.

Python, Scikit-learn, Pandas, NumPy, Time Series

  • Conducted a predictive modeling study evaluating regression algorithms (Linear, Ridge, Decision Tree, and Random Forest) on socioeconomic and climate time-series data from the Xingu basin (2015–2025).
  • Engineered temporal lag features and reduced dimensionality from 25 to 14 attributes to prevent overfitting on limited sample sizes.
  • Implemented chronological cross-validation via TimeSeriesSplit across 5 windows, identifying institutional regime shifts and achieving an $R^2$ of up to 0.63 in regular intervals.

👜 ModaBOX

TypeScript, React Native, Node.js, PostgreSQL, GCP

  • Developed full-stack features for a mobile marketplace, structuring 48 REST API endpoints and 12 relational entities.
  • Implemented core security practices using OWASP standards and Argon2id hashing for authentication.
  • Modeled PostgreSQL relational queries utilizing native Full-Text Search (tsvector and trigrams) for product catalog indexing.
  • Built a cross-platform mobile interface in React Native with unified navigation for customer, merchant, and delivery roles.

PHP, Laravel, MySQL, MVC

  • Built an agricultural e-commerce web platform applying the Model-View-Controller (MVC) architecture.
  • Developed catalog CRUD workflows, secure user authentication, and session-based cart state management.

Toolbelt

  • Languages: Python, TypeScript, JavaScript (ES6+), PHP, SQL
  • Data Science & ML: NumPy, Pandas, Scikit-learn, Time-Series Analysis, Feature Engineering
  • Backend & Cloud: Node.js (Express), Laravel, Google Cloud Platform (GCP), RESTful APIs, JWT, Argon2id, OWASP Guidelines
  • Databases: PostgreSQL (Full-Text Search), MySQL
  • Frontend & Mobile: React Native, React.js, Tailwind CSS, Context API, Redux
  • Engineering Practices: Git / GitHub (Git Flow), OOP, MVC, SOLID Principles, Unit Testing Basics

📬 Get in touch


"Who will you think of
as your whole life flashes
right before your eyes?"

Pinned Loading

  1. bsergg bsergg Public

    A context-aware analytical engine designed to quantify player performance in Brawl Stars esports

    Python 2 1

  2. amazondeforestation amazondeforestation Public

    Aplicação de Data Science para previsão de desmatamento na Amazônia utilizando Random Forest. Inclui pipeline de engenharia de dados, validação temporal e dashboard interativo em Streamlit.

    Python