MuseScore as a part of Muse Group is the world’s most popular sheet music ecosystem. The place where millions of music makers play, share and create.- optimize Google Web Vitals of "Need improvement" pages to make user interaction with the site more comfortable;- took part in the development of a new architecture and the transfer of components there in order to unify the structure of the application, which should simplify the support and development of the application, as well as improve interaction between developers between products;- redesign outdated pages to ensure that the product website remains relevant and competitive;- run a bunch of AB-experiments to optimize the product to improve user experience and increase conversion based on data;- review and evaluate code written by team members to ensure adherence to coding standards, optimize performance, and resolve any bugs;

Worked on several projects:1. Expressingly - is a multi-tenant SaaS application that allows you to rent copies of one application for companies who want to have their own “forum”, where users can familiarize themselves with the problems of these companies, create their ideas for solving the problem, and like and comment on them.What was done:- built 2 client-side (React.js + Redux, Material UI) and 1 server-side (Javascript, Node.js, Serverless, AWS) applications;- deploying and configuring the application remotely on the customer side, as it required a “one-click solution”.2. Toggle - web-application that allows users to buy and sell real estate. Users have the opportunity to view a list of available properties (nearby, visited, favorites), and they can also make an appointment to visit and direct the visitor through the property (the user receives a description of the property: rooms, bathrooms, etc.). Sellers have the opportunity to list their property, add a comprehensive description, create a “step by step guide” - a guide that will be shown to the person who visits the property.What was done:- worked on admin panel: implemented custom calendar, notifications, profile views, and all the parts of complex UI;- built user authentication and authorization using JWT;- integration with backend: scheduling APIs (allows the users to create an appointment request), seller APIs (allows the seller to configure the visits: when, for how long, and so on).