Frontend Developer at an entertainment streaming service among the top 50 most visited websites worldwide (according to SimilarWeb).Product Development:▫️ Primarily develop new interfaces using React, occasionally work with Vue.js.▫️ Handled the frontend integration of a KYC system.▫️ Implemented the frontend for a redesigned signup dialog that thousands of users see and use for registration every day.Performance & Code Quality:▫️ Proposed and implemented JS code splitting with loadable-components (reducing initial JS load by 7%) and CSS code splitting, including separating mobile-specific rules into their own chunk (cutting blocking CSS by 32%); revised SVG loading (reducing initial SVG load by 82%); developed a service worker to reuse a single WebSocket connection across multiple tabs.▫️ Actively participate in frontend meetings, advocating for coding standards that ensure code consistency and readability, promoting the use of automation tools like linters and pre-commit hooks to enforce these standards, initiating discussions about performance issues.▫️ Took part in setting up CSS modules on the project.▫️ Participated in the migration of JavaScript modules to TypeScript.Specialized Tech Skills:▫️ Worked with various interesting technologies such as Service Workers, PWA, push notifications, voice recording, mp3 encoding, and Lottie animations.▫️ Gained experience in modifying CI/CD and Nginx configurations as needed to complete tasks.▫️ Regularly address browser-specific issues, debug using BrowserStack and mobile inspector (iOS and Android), and find workarounds for browser limitations.

Worked on Scores24, a platform for sports fans, providing event schedules, real-time scores, game details, stats, and predictions.Started as the only frontend developer on an early-stage project. Took it from prototype to a production-ready app. During my time there, monthly visits grew to over 1M+. By the end of my role, I was leading a small frontend team, which included another frontend developer and a layout developer.Technical Achievements:▫️ Rewrote the project and set up a system for convenient development of future pages: divided one large MobX store into smaller pieces, replaced a custom-built unstable router with router5, established a system to load data according to the current page, and switched from a DIY GraphQL solution to urql.▫️ Set up server-side rendering using express.js and react-ssr-prepass.▫️ Configured code splitting using loadable-components.▫️ Researched different methods for handling real-time updates: jsondiffpatch, a custom-built Node.js service that sends updates via WebSocket, and GraphQL subscriptions.Product Development:▫️ Created with the team reusable and responsive components and composed pages with various sports statistics (team page, event page, schedule page, etc.).▫️ Advocated for the creation of a component library, set up react-styleguidist and populated it with component examples and docs.▫️ Led frontend aspects of adding new sports and languages.SEO & Ads:▫️ Helped implement SEO, such as schema.org markup for different entities (SportsEvent, SportsTeam, etc.), and a system for controlling meta tags via the admin panel▫️ Designed and developed a system for ad management, allowing convenient configuration of different widgets and banners without needing a frontend developer.Communication:▫️ Conducted interviews and mentored new frontend and layout developers.▫️ Delegated frontend tasks among team members▫️ Explained complex technical things to non-technical management