• Extensive experience in technologies such as JavaScript, CSS, and HTML. • Ability to develop specifications and designs for complex applications, as well as write technical documentation • Experience in developing custom web components using Vanilla JS + ShadowRoot. I can work with any framework or library for web components • Skills in unit testing using Mocha, Chai, and Jasmine • REST • Backend development using Cloudflare workers. • Strong understanding of browser rendering behavior and performance, asynchronous request handling, and cross-browser compatibility issues and ways to work around them • Ability to interpret and implement web designs and refactor old features to newer and cleaner ones. I am experienced in optimizing applications to ensure maximum speed and scalability, and I am always looking for ways to improve the performance of the code I write. • Experience with Web Audio and Crypto API (AES-GCM cipher) • Custom gestures for mobile devices • Experience with pair programming technique • OAuth (Google/Github/Facebook login)