Development of a Kotlin Android application.- Refactoring of the existing codebase (optimization, rewriting with modern language and platform features e.g. moving to coroutines);- Development of new features;- Maintenance of a Node.js backend used by the application;- Implementation of communicating with the server using Socket.io;- Performing peer code reviews;- Building a separate library for convenient communication between client and server.

- Developing interfaces with React and Redux;- Backend development with NodeJS, Python3;- Working with microservice architecture and event-driven approach;- Server development with Meteor, Hapi, Express, NestJs;- Applying Socket.IO for chat creation and the other apps using real-time bidirectional communication;- Databases usage: MongoDB, PostqreSQL, MYSQL, Apache Cassandra, Apache Hive, ELasticSearch, Redis;- Implementing CI/CL tests and pipelines;- ORM implementation using TypeScript, CoffeScript;- Styling with CSS modules и Stylus preprocessor;- Building layouts, templating with HTML, PUG, PHP;- Webpack bundling;- Client-side routing with FLow-Router, React-Router;- DB migrations;- Console git usage for version control;- Linux, SSH for remote server connection;- Refactoring of legacy-code;- Writing documentation, regular cleanups, dividing core milestones into small tasks, regular release updates after each feature;- Integration and unit testing;- Building CLI scripts, parsers;- Creating crawlers (Node.js, Puppeteer)- Building scripts that collect stats-related data, analyze it.

- Checking student's projects;- Conducting educational calls;- Discussing and explaining difficult topics.

- Сhecking student assignments;- Conducting consultations with the analysis of errors.

- Client scripting with JS, jQuery;- Performance optimization; - Bundling assets with Webpack, Gulp, usage of ES6+ features;- Creating valid, semantics and logical markup using HTML/Pug;- Building adaptive layouts using float, flexbox, grid following BEM methodology;- Styling with CSS, LESS, SASS, SCSS;- Working with Photoshop, Zeplin, Figma;- Supporting browsers: Chrome, Mozilla Firefox, Opera, Edge, IE11, Safari;- Refactoring legacy-code;- Building email layouts.

- PHP scripting and automatization;- Performing marketing research;- Operative management;- Systematization of corporate information;- Working with Google Analytics, Yandex.metrika.