I've been working on various tasks as Front-end Developer, most notably: - made security fixes on large javascript codebase that includes around 300k LOC - created prototype of password strength estimation tool for registration page - designed flexible widget builder that make it easy to modify existing and create new widgets using Ractive.js as js framework - designed validation for widget builder

I've been working on various single page web applications: - implemented view components using YUI library - worked at node.js server implementation - introduced modern build workflow based on grunt task runner - made contribution to internal widget library - took a part in creating test suite using YUI test framework - developed a multi-step registration and login form - worked at multi-level data management interface - used plain javascript without third-party libraries

I've been working full time on public transportation monitoring system: - designed and implemented web client using ExtJS - designed infrastructure for report service using CouchDB as storage and Node.js as backend - implemented RESTful web service using PHP with Yii and Node.js - introduced VCS (mercurial) into the team's workflow