- I successfully restructured the architecture of a Single Sign-On (SSO) system without third-party cookies for a platform with over 15 million monthly users;- Optimized the main nodes of interaction with the company's clients, which resulted in a 20% increase in authenticated user traffic;- I have created client-side data collection libraries that significantly improved analytics quality, allowing more targeted ad campaigns and increasing the company's sales volume by 10%;- Implemented new features on the pages of internal applications of the company, which made it easier to integrate new users.

- Successfully developed and implemented over 30 functional React components, improving site performance by 20%;- Onboarded and mentored 10 new employees, reducing adaptation time by 50%;- Developed and implemented over 15 interactive elements on website pages, increasing conversion rates by 35% (including sliders, carousels, and dashboards);- Created and optimized an online chat based on Socket.IO;- Effectively collaborated with backend developers to create and optimize over 20 endpoints and update the database model.Tech-Stack: JavaScript / TypeScript / React / Redux / SASS / Axios / Socket.IO / JWT / Docker / Node.js / Docker / GitLab / Postman / PostgreSQL / Express

- Developed an internal portal for 1000+ users.- Developed custom UI-kit with the web-designer.- Back-end interaction (worked-out business logic, joint development of endpoints).- Communicated directly with the customer (task evaluation, UI part development).Tech-Stack: JavaScript / React / Redux / SASS / Axios / Docker / Node.js / Docker / GitLab / Postman