Chen worked on the android/androidify repository, where he developed an orientation-aware Camera UI that dynamically adjusts camera controls based on device rotation. Using Kotlin and Jetpack Compose, he engineered the cameraLayout to reposition controls in landscape mode, preventing finger obstruction and improving camera preview usability. His approach focused on targeted, maintainable UI/UX changes, delivering a low-risk patch that addressed a specific landscape-mode issue. Throughout the project, Chen demonstrated proficiency in Android development and mobile interface design, emphasizing orientation handling and clear commit documentation. The work reflected a focused engineering effort, addressing a concrete usability problem with a well-scoped technical solution.