Keeny is a mobile travel app that gives users more than a million AI-generated audio guides for any destination around the world. It offers a unique way to explore places, from famous landmarks to hidden gems, all from your phone. At Keeny, we leverage cloud-native solutions and cutting-edge AI, as well as cohesive product design, to ensure that our app delivers not only functionality, but also a seamless user experience. We constantly seek the best solutions in strategy, execution, and creativity.

The main role is a frontend developer in the TeamCity product. It is a CI/CD server by JetBrains which is used by over 30,000 customers and millions of users.Responsibilities:- writing clean and efficient code for the client side;- creating frontend architecture;- setting up development processes, CI/CD, code-analysis, testing and building frontend applications;- taking an active part in stand-ups, planning and retrospective meetings;- code reviewing;- refactoring of legacy code, fixing bugs in a complex product with a 16-year history;- interviewing candidates for frontend positions;- discussing and proposing new product features;- mentoring students during internships.Technologies: TypeScript, react.js, redux.js, jest, storybook, react-router, webpack, postcss, kotlin, spring bootMain achievements:- Rewrote old system of displaying build logs. The main challenge was the file size. The old system couldn't show logs larger than 10Mb. It was inefficient and used 100% CPU for 1 minute for the first render. The new system is fast and can handle logs up to 1Gb efficiently. It renders less than 3 seconds. It provides a custom search, filtering by log levels, expanding and collapsing nodes in the log tree, soft-wrap and no-wrap modes for message lines, supports ANSI colors.- Participated in the creation of a system for UI extensions for TeamCity. I added the ability to write plugins using react.js and integrate them into the existing SPA. It provides a useful typed API and documentation for external developers https://www.npmjs.com/package/@jetbrains/teamcity-api- Created frontend architecture and set up full frontend development workflows for the brand new TeamCity Cloud sub-product. It is based on TeamCity Enterprise, but contains cloud specific pages and functionality: instance resource management, user management, product notifications, additional configuration pages and more.- Interviewed 30+ people, hired 4 senior developers and 3 students.

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Writing frontend code for a large product for insurance companies. Developing new features and fixing bugs in legacy code.Mentoring junior and middle developers, improving development processes.

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