Dahee Ahn Email & Phone Number

South Korea

Seoul, South Korea

• Improved the user interface by enabling voice recognition to start in the background instead of showing a prompt.• Enhanced code quality through code reviews focused on type checking and error handling, resulting in better code readability and reduced maintenance time, especially in reusable hooks using TypeScript.

Seoul, South Korea

• Led the development of a routine management system in a React Native app by designing the component-based architecture and implementing internationalization, resulting in over one million downloads and ensuring scalability for a global audience.• Built a question-based onboarding and registration system, resulting in a 3x increase in subscription conversion rate.• Increased user retention by 42% by implementing a main screen feature for daily attendance check, journaling, and to-do list management using lazy loading techniques.• Optimized app performance by reducing loading time from 5 to 2 seconds through caching and memoization, minimizing unnecessary renders from 800 to under 10, and resolving memory leaks, which significantly improved the overall user experience.• Developed item purchasing store functionality within a React Native app by building web pages using Next.js, ensuring fast page updates.• Implemented responsive designs, optimizing for mobile and tablet to enhance user experience by ensuring an accessible interface across various device sizes.• Partnered with designers to establish a comprehensive design system, including consistent typography, color palettes, and reusable UI components, resulting in a more efficient development process and a 50% increase in productivity.

Seoul, South Korea

• Delivered practical React Native training focused on key concepts (components, state management) and hands-on project implementation, equipping students with development skills directly applicable to real-world scenarios.

Seoul, South Korea

• Migrated the codebase from JavaScript to TypeScript and upgraded React Native versions, improving code quality, type safety, and overall maintainability, while boosting application performance.• Created a user reporting feature, working closely with clients and administrators to solve custom functionality needs, significantly improving administrative efficiency.