Samuel Roldan

Background

About Samuel Roldan

I am a Staff Frontend Engineer with 20 years of experience architecting applications, specializing in micro-frontends, scaling, design systems, CI/CD, tooling, leading front-end teams, mentoring engineers, building reusable UI libraries, and testing.I’ve dedicated half my life to building rich user experiences across different technologies, not just in web but also in gaming and mobile; in industries which span from startups, to mid-size businesses, to enterprise corporations.Technical Skills* JavaScript, TypeScript* Redux, Redux Toolkit Query (RTK-Query), Mobx* Micro-Frontends architecture / Webpack Module Federation* Design Systems, UI prototyping, documentation and mentoring* Continuous Integration and Continuous Deployment (CI/CD) with Github/Gitlab Actions* Unit testing end-to-end testing, integration testing, code coverage, visual testing* Responsive design* Accessibility (a11y), Internationalization (i18n), SEO Optimization* Basic knowledge of React Native, MongoDB, Nest.jsToolbox* JavaScript: React, Redux Toolkit Query (RTKQ), Mobx, Node.js, Next.js* Testing: Jest, React Testing Library, Cypress, Mock Service Worker (MSW), Enzyme, Chromatic* Tooling: Webpack, Babel, NPM, NVM, Eslint, Prettier, Husky, Github actions, OpenAPI codegens* Performance: Lighthouse, YSlow, GTMetrix* Documentation: Storybook, TypeDoc, JSDocs* CSS: TailwindCSS, SASS/Compass, Bootstrap, IcoMoon* Mac: iTerm2, Tmux, Oh-my-zsh, VIM, Homebrew, GIT & Node.js* Graphic Editing: Photoshop, Illustrator & Lightroom