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Achievement: Pull Sharkx2Achievement: YOLO

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donizetiferr/README.md
About

Full-stack software engineer focused on building complete, production-ready products—from backend systems to polished interfaces. I work across web and mobile applications, APIs, process automation, and system integrations.

I value strict typing, solid test coverage, and reliable end-to-end delivery. More than 9,000 contributions in the past year (measured in August 2026) reflect a consistent shipping cadence.

Featured Project

forecast-calibration-kit

Zero-dependency TypeScript toolkit for evaluating probabilistic forecasts with Brier score, log loss, ECE, calibration curves, and Murphy decomposition.

  • Fully typed API for both ESM and CommonJS.
  • CLI for scoring JSON datasets directly from the terminal.
  • 98% test coverage and a package published on npm.

npm Coverage

Expertise

Web Full-Stack

Web Full-Stack


Backend & APIs

Backend and APIs


Mobile & Desktop

Mobile and desktop
React Native · Expo


Databases & Cloud

Databases and cloud


Automation & Integrations

Automation and integrations
n8n · APIs REST · Web Scraping


Quality & DevOps

Quality and DevOps
Playwright · E2E Testing

GitHub Activity
GitHub Streak
Contact

X npm

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  1. forecast-calibration-kit forecast-calibration-kit Public

    Calibration metrics for probabilistic forecasts: Brier score, log loss, reliability diagram, ECE and the Murphy decomposition. Zero-dependency TypeScript with a CLI.

    TypeScript