- Developing backend features, new endpoints, additional logic, tests with TypeScript- Adding calls to backend from client side according to new features, with C++ in Unreal Engine 4 domain- Adding documentation for new and existing features, along with actualizing old documentation- Adding new features to Django applications- Full stack web development with Ruby on Rails at backend and React TypeScript/JavaScript at frontend- Implementation possibility of group transactions- Adding new reports within existing reports system- Modifying API and according frontend logic using Ruby On Rails/React- Adding a feature to cleanup outdated data in non-production environments using Ruby On Rails- Adding indexes to postgresql db to improve query performance- Improving telemetry/monitoring by adding new data for different function calls in C++/Action Script inside custom game engine- Adding new UI elements (buttons) using Action Script inside custom game engine- Creation minigames inside existing world with C++ using custom game engine- Creation gym location using custom game engine editor

- Backend API development using custom Ruby framework- As part of migration to Ruby on Rails framework I’ve remaking system of timers and retries- Creation of automated tickets refunds system, using API of different flying providers, available to customer service agents and directly to customers with different options depending on access level. - Rewriting sms notification service from legacy PHP codebase to Golang

- Backend development using: Ruby, Ruby on Rails, PHP, Hanami, Yii, Elixir, Phoenix- Rewriting legacy codebase from Parser to Ruby on Rails for BIA Technologies- Creating unit tests with RSpec to increase code coverage- Setup development environment with docker containers- Frontend development with JavaScript, React, Vue.js- Participation as technical designer (adding assets, vfx, quests) to the mobile game created with custom game engine and toolset- Creation of calendar to search and book transfers for GetTranfer.com- Adding authentication/authorization system to Ruby on Rails project (gem devise + JWT)- Implementing system of seasonal discounts- Creation MVP of social network- Rewriting legacy codebase from PHP to Ruby on Rails for Chat2Desk

- Creation of custom plugins for Redmine with Ruby on Rails and js, jquery and bootstrap- Maintenance and improving localization system with python and couchDB- Dockerizing solutions

- Customization russian accounting/erp system (1c) with inner platform language and C++- Full stack web development with PHP (joomla) and js,jquery, bootstrap- Maintenance of web site written in perl and vanilla js, css- Performing SEO/SMM activities