•Built a responsive landing page for maximum conversion rate and used A/B testing and Google Analytics to increase the conversion rate by 60%. •Developed a responsive web application utilizing React and TypeScript, putting a lot of importance into scalable and maintainable code.•Implemented a backend system with Firestore and Firebase for data management and user authentication, and integrated Python for server-side logic, including a subscription model via Stripe API and Deployed on DigitalOcean VPS and utilized Docker for smoother deploymentPython, React.js, TypeScript, Firebase, Firestore, Linux, FastAPI, Docker, Git

•Built internal text editor based on internal needs with all features like nested structure, save/cancel changes and others•Refactored dozens of massive sections and components (rewrote code from JavaScript into TypeScript, implemented ContextAPI, migrated from WebSockets to GraphQL and reduced file sizes up to 70%)•Built tens of internal components that were used by other members and documented on Storybook•Developed multiple massive sections for one of our web appsReact (Context-API, Material-UI), TypeScript, JavaScript, WebSocket, REST API, GraphQL, Git