We are building a mobile-first language learning application with a strong focus on audio-based learning at scale. The product will handle large volumes of streamed and downloadable audio content, requiring a UI that is clear, stable, and easy to navigate even with long listening sessions and offline usage. We are looking for an experienced UI/UX designer to design a calm, modern, and highly usable mobile app interface with strong emphasis on content hierarchy, readability, and audio control states. The design should support intuitive navigation through dialogues, learning sections, and audio playlists without feeling cluttered or overwhelming. This is not a flashy or gamified product; the interface should feel premium, restrained, and timeless, prioritizing user confidence and focus. You will design key screens, interaction flows, and a consistent component system in Figma, with clear structure and developer-friendly handoff. Experience designing mobile apps is required, and prior work on audio, streaming, offline-first, or content-heavy applications is a strong plus. We value designers who think in systems, communicate clearly, and are comfortable iterating based on feedback. Long-term collaboration is possible for the right fit.