Over 16 months, contributed to open-ani/animeko by building and refining a cross-platform anime streaming application with a focus on reliability, scalability, and user experience. Delivered features such as episode collections, advanced authentication and session management, and configurable video resource resolution, while modernizing the build system and automating API client generation. Applied Kotlin, Jetpack Compose, and Ktor to architect robust backend and UI layers, integrating analytics, caching, and CI/CD pipelines for efficient development and release. Addressed concurrency, data integrity, and performance through targeted refactors, dependency upgrades, and test-driven development, resulting in a maintainable, high-quality codebase supporting Android, iOS, and desktop.