Marek Grzybek is a Staff Software Engineer with 12 years of experience specializing in modern JavaScript and front-end architectures, currently working remotely and open to US-based fully remote roles. He brings deep React expertise (including Redux, redux-saga/thunk, react-router) and strong TypeScript/Flow experience from early Angular/Angular2 work through production-grade React applications. Marek combines pragmatic engineering practices—TDD, functional programming techniques, and rigorous Git workflows—with a broad toolset (Webpack, Babel, Jest, ESLint, Sass/BEM) to keep codebases maintainable and high quality. A longtime freelance Toptal member and contributor to projects like the lightweight baguetteBox.js lightbox, he pairs consulting and code-audit experience with hands-on delivery at startups and AI-driven companies. Based in Poland with an MS in Computer Science, he’s known for quickly learning new technologies and translating them into practical improvements across teams and products.
12 years of coding experience
17 years of employment as a software developer
Master of Science (MS), Computer Science, Master of Science (MS), Computer Science at Wrocław University of Science and Technology
Bachelor of Science (BSc), Computer Science, Bachelor of Science (BSc), Computer Science at Hochschule Bielefeld
:zap: Simple and easy to use lightbox script written in pure JavaScript
Role in this project:
Front-end Developer
Contributions:22 releases, 290 commits, 65 PRs in 5 years 9 months
Contributions summary:Marek appears to be a front-end developer contributing to the baguetteBox.js project, a lightbox script written in JavaScript. The commits demonstrate the creation of a basic working implementation of the script, including the implementation of the lightbox functionality. The user is also responsible for integrating the JavaScript code with a demo page and adding CSS styling to improve the UI.
Contributions:99 commits, 24 pushes, 5 branches in 21 days
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Marek Grzybek - Staff Software Engineer at Contentsquare