Grouped with my teammate in previous company, we got a big project to redesign the mobile app of one of the healthcare provider in Indonesia. By redesign, I mean it's totally redesign the whole thing. Start from the design process by discussing all the requirements in early stage, providing wireframe to validate the idea, create the prototype, and release to the Play Store & App Store. And, providing the high-fidelity design screens of the mobile app along with the design system.