Led the design and implementation of the front-end architecture using React.js and Redux, delivering a scalable, maintainable, and high-performance web application.

Maintained and optimized a legacy AngularJS codebase while executing a gradual migration to Vue.js, ensuring uninterrupted functionality, continuous delivery of new features, and minimal disruption during the transition.

Developed and maintained a comprehensive, web-based ad platform admin application, enabling internal teams to efficiently manage ad campaigns, optimize ad delivery, and improve platform operations.

Tested ad-network functionality across web platforms, thoroughly verifying monetization flows throughout the download funnel to ensure system reliability, data accuracy, and optimal CPC performance. Planned, executed, and maintained test suites, including acceptance, manual, and automated tests, across multiple environments to reliably catch regressions and validate new feature releases.