Andrii But'ko

Development of two web applications: 1. Ezil.me - mining pool. Achievements: • Developed a user authentication system using the data from the user's cryptocurrency wallet. • Refactored over 80% of the application's codebase. • Was a mentor for junior front-end developers 2. Avely.fi - liquid staking protocol. Achievements: • Developed and implemented a swap calculator. • Finished the development of the application on time, thanks to which the application received investment and was released

Development of a B2B application "Underwriting" for a bank. Responsibilities: • Support and development self-written bank UI kit. • Communication with teams of QA, analytics, and backend developers. • Performing bug fixes and code reviews. Achievements: • Developed and supported the most important components and parts of the application such as custom tables and multi-selects • Resolved numerous bugs related to table data filtering by reworking and unifying the filtering system.

Development of front-end applications based on micro-frontend architecture. Responsibilities: • Supporting and improving the UI kit. • Developing new micro-frontend applications using the AntDesign UI framework. • Resolving bugs and fixing issues. • Conducting code reviews. Achievements: • Refactored one of the main applications to the new version of React (from class components to functional components). • Successfully developed two auxiliary React projects. • Supported custom UI kit components.