• Increased ad visibility for 4% by resolving critical loading order issues, significantly enhancing user engagement and ad performance.• Improved ad load speed by 10% through the reduction of unused code and elimination of unnecessary bids in prebid calls, leading to a more efficient ad delivery process.• Implemented a proactive monitoring system** that minimized financial losses by promptly identifying and addressing issues, ensuring continuous ad operations.• Consistently boosted revenue by optimizing banner and video advertising strategies, refining ad placements, and enhancing overall ad performance.• Reduced support time and enhanced code reusability by modularizing common components into a separate repository, enabling seamless integration across multiple products.• Drove efficiency in ad technology implementation by contributing innovative ideas that streamlined workflows and optimized advertising operations.

• Developed an interactive visualization of LinkedIn contacts using Three.js, displaying connections as dynamic circles, creating an engaging and intuitive way to explore professional networks.

• Implemented a seamless file upload experience, allowing users to continue uploading files automatically even after a page reload, inspired by a concept discussed at a Google conference. Also introduced the ability to upload files via the "Ctrl+V" hotkey, which collectively boosted file uploads by 4%.• Revamped the entire file upload UI by transitioning from legacy code to React, enhancing user convenience and clarity during the upload process, leading to a more intuitive and responsive interface.• Optimized site performance by identifying and addressing bottlenecks, resulting in a faster and more efficient user experience.

• Led the development of a project from the ground up, designing the component and state architecture, and ensuring reusability of components across the application for maintainability and scalability.• Enhanced rendering efficiency for long lists of movie titles by implementing virtualization, significantly improving the smoothness and performance of the UI.• Achieved a 30% reduction in website load times by adopting a lazy-loading strategy, optimizing resource delivery and improving user experience.• Developed and implemented a versatile SDK for the video player, enabling its integration into other projects, which resulted in a threefold increase in video impressions.• Created a smart TV app as a team pet project for LG devices, showcasing content and a video list, demonstrating innovation and expanding the team's technical capabilities.

The main task: increasing advertising revenue, the processing and insertion of advertising during playback of content.• Developed and optimized an HTML5 video player for iOS Safari 10+ and Android web browsers, leading to a 5% increase in ad impressions by enhancing compatibility across platforms.• Adapted and integrated VAST 3.0 support into the ad player, creating a "bridge" between VAST ads and internal MP4 ads, resulting in higher demand fulfillment by enabling the player to serve a wider range of ad formats.• Boosted performance by modularizing the codebase, breaking down large code bundles into smaller, efficient modules, and delivering only the necessary components to the user, improving load times and overall user experience.• Initiated the migration of ad logic to a Redux-based state management system, laying the groundwork for more scalable and maintainable code.• Increased code reliability by implementing comprehensive unit tests and creating detailed documentation, ensuring better code coverage and easier onboarding for new team members.• Identified and reported critical bugs in the proprietary Google IMA SDK, contributing to the improvement of the SDK's stability and functionality.Permanently used tools: TypeScript, ES6, React, ima sdk, shaka player, Jasmine / Enzyme