My expertise is as a lead / senior front end / javascript developer for 6+ years with experience in designing and developing web, mobile & desktop apps using HTML5, CSS3 (PostCSS, SASS, SCSS), TypeScript/JavaScript ES5/6 (React, Redux, Vue.js 2.x, Angular 1-8, RxJS, D3.js, Cordova, Ionic, Electron), Node.js, Redis, MySQL, MongoDB, shell and lots of unit & integration testing (Jest, Cypress). I also like working with web services: OAuth 2.0, JWT, SOAP and REST.