Joined the company as Senior developer.

• Brought frontend testing to the company and made workshops for developers to make them much more familiar with different approaches
• Increased the product stability by the tests and significantly reduced bugs count on the client side
• Improved performance of the application about ~30% according to Google lighthouse
• Got rid of centralized data store in favor of small storages divided by DDD principles
• Offered "storybook driven development". The approach allows to avoid situations, when developer can't temporary complete the feature, due something, but able to prepare all the required components and rapidly complete the feature when it be possible
• Full-featured player development with chrome cast support
• Curation and participation of some major versions updates for node, webpack, vue, tailwindcss
• Replaced proprietary file uploader by self-hosted solution that's highly reducing costs of images and files processing with next uploading and significantly improving user experience

• Non-custodial ETH wallet support and development based on web3.js
  • Optimized work with ERC20 tokens inside blockchain wallet
• KYC platform development
  • Made first working version of client library that integrates Metamask-like wallet into the client application and provides ability to sign any blockchain transaction, upload documents for verification and Oauth2 feature
  • Participated in research and development of approaches to cover applications using the widget by cypress, web workers and cross-window messaging
  • Made Oauth2 SDK for node
  • The main library public documentation maintenance
  • Contributed to design system and common packages development using lerna for multiple packages management

Joined the team for solving problems with frontend part redesign. The main responsibilities were in application architecture redesign and supporting exist features.

Re-implemented integrable feedback widget with new technologies stack for better scalability and reliability:

• The widget became in 4 times smaller including exist features
• Added "co-browsing" feature that allows operator to look at current user browser state and interact with last one for better client experience (like teamviewer or google remote desktop)
• Significantly reduced previous problems and bugs

Participated in development of platform for "digital transformation" for big companies, that provides many tools to make company structure flat and organize staff by small independent teams collaborating with each other.

• Structural agenda editor with Google docs integration that allows to log any meeting by defined schema
• Company task tracker feature. Canban-like board for task management across the whole company
• Personal tracker feature. Allows to track all the activities with other features integration
• Interactive tutorial that allows users to interactively dive into the product
• Printable PDF cards generator service based on puppeteer
• Fuzzy search by company entities

Rapidly made some MVP which were used as the key features.

Was in a core team of botmother.com – the first "cross-platform" chat-bots constructor in Russia that allows users to create bots for popular messengers.

• The first version of the frontend with interactive canvas that allows to build bots from logic block (very similarly with visual programming) with following maintenance
• Billing and feature blocking for priority plans
• Configuration panel for all the supported messengers
• Analytics module
• E2E tests with Google puppeteer and Cucumber
• Unit testing with enzyme and jest
• Brought BEM for better css organization

Also participated in the development of integrable widget based on vue and redux, that includes deep integration with customer support service Usedesk and many modules like – online chat, feedback form, wiki, messengers and social networks.

Web-sites development and maintenance

Participated in testing of high-load projects.

• Whole B2B version for one of the biggest russian telecom operator coverage by Selenium and WebDriver
• Test map support and test cases writing
• Regression testing and bug reporting
• Stress testing with JMeter and Grinder