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I'm Javier Brea
Full-Stack Engineer.Senior Developer.Open Source Author.Web Developer.TypeScript Expert.Software Developer.Open Source Contributor.Software Architect.

Senior Full-Stack Engineer at Telefónica. 20+ years building production software. Focused on scalable architectures and developer tools. Open source author and contributor.

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DEVELOPER
Javier Brea caricature
DEVELOPER

24

Years
Coding

Building full-stack architectures that scale, developer tools, and clean, maintainable code. Methodical, quality-driven, and a modular thinker.

5.9M+

npm downloads / month

34K+

Hours writing code

1.6K+

GitHub stars

6+

Open source projects

Latest Experiences

Experience

Telefónica Digital 2019 – Present

Senior Software Engineer

Building full-stack software across the entire stack — scalable architectures, developer tools, and automation. React, Node.js, TypeScript, CI/CD.

Experience

XByOrange 2018 – 2019

Front-end Architect

Built the front-end foundations of Orange's digital telco venture, focused on modular, scalable web applications.

Experience

ING Bank 2013 – 2018

Front-end Architect

Architecting and developing large-scale online banking web applications, driving front-end standards and quality.

Telefónica Digital
XByOrange
ING Bank

Contributing to the Community

Featured Open Source Projects

Main open source projects I'm currently maintaining

eslint-plugin-boundaries

Eslint plugin checking imports to ensure that architecture boundaries are respected by the elements in a project.

downloads5.2M/monthStar 926
cypress-localstorage-commands

Extends Cypress' cy commands with localStorage methods. Allows preserving localStorage between tests.

downloads1.3M/monthStar 179
cypress-fail-fast

Enables fail fast in Cypress, skipping the rest of tests on first failure.

downloads1.1M/monthStar 122
Mocks Server

Node.js mock server supporting multiple api behaviors. Simple and easy out-of-the-box but very powerful and customizable with plugins.

downloads267.2K/monthStar 312