Played a key role in the frontend development of "Decade: Lifelong AI Companions", an innovative AI chat app built with Unity. This SaaS entertainment application, offering both free and paid tiers, allows users to engage in conversations with AI characters powered by advanced LLMs, reaching 25K+ users within 4 months of launch:• Leveraged Unity's UI Toolkit framework to implement core functionalities and develop UI components, using UXML and USS (similar to HTML/CSS), demonstrating adaptability to different frontend paradigms, transferable to React, JavaScript, and TypeScript development.• Integrated Auth0 authentication and OpenAPI client for frontend-backend communication, enabling real-time AI conversations and SaaS features like user tier management.• Created critical features including sign-up, sign-in, onboarding, and main chat interface, optimizing UX across subscription tiers.• Wrote automated tests using AltTester, ensuring code quality and reliability.• Managed app publishing on Apple App Store and Google Play Store, contributing to 10K+ Android downloads.• Implemented and integrated analytics and marketing tools (Unity Analytics, Facebook SDK, Statsig, Appsflyer) to track user behavior, optimize user acquisition strategies, and improve app performance, supporting data-driven decision making for product development and marketing efforts.• Helped drive user engagement, achieving an average daily usage of 66 minutes per user.• Collaborated with a cross-functional team to develop frontend and integrate backend services for a complex AI chat application.This startup role showcases my ability to thrive in a fast-paced environment, contributing to complex SaaS products while adapting to new challenges. It demonstrates my problem-solving skills across technical and UX domains, and ability to implement new technologies effectively. These experiences make me well-suited for innovative companies seeking adaptable, forward-thinking developers.

- Developed and maintained a React Native-based shopping malls loyalty program mobile app for iOS & Android with Redux, Redux Saga for managing in-app content & API exchanges, allowing 100,000+ daily customers to save up points and redeem benefits, and increase sales interaction for merchants across 14 shopping malls.- Implemented new UI and feature updates from Figma mock-ups collaborated with UI/UX designers.- Supported localization for three languages: English, Traditional & Simplified Chinese.Managed preview deployment via TestFlight and Google Play Beta Access for iOS & Android.- Proactively managed and responded to feedback from a variety of users, including shopping mall customers and merchants, to ensure a seamless and user-friendly app experience.

- Developed and maintained a Kotlin-based stock charting and trading Android app with 500,000+ downloads on Google Play Store Hong Kong providing screening and charting on multiple stock markets including Hong Kong and the US.- Refactored legacy XML layout to Jetpack Compose; collaborated with UI/UX and business analyst teams.

- Developed and maintained a native Android app for MTR, Hong Kong's leading metro train operator, enhancing the tracking of maintenance workers' locations using iBeacon scanning.- Played a crucial role in the full-cycle development of the automated iPostal Kiosk system for Hong Kong Post. This involved everything from the initial UI/UX design to backend development and regular engagement with Hong Kong Post's IT team to optimize the system's user interface and experience.- Converted the Android-exclusive iBeacon tracking app into a cross-platform solution using React Native. This ensured compatibility with both Android and iOS devices and significantly broadened the app's user base.- Assisted in the maintenance and improvement of the front-end of an internal train monitoring system for MTR, aiding in operational efficiency and effective management.- Created diverse UI/UX mock-ups for multiple projects employing Adobe XD and Sketch, reflecting the requirements of the stakeholders and enhancing user experience.- Provided essential IT solutions for both MTR and Hong Kong Post, resulting in marked improvements in their operational efficiency and customer/user experience.- Led regular discussions with the IT team of Hong Kong Post, shaping the user interface and overall user experience of the iPostal Kiosk system.- Managed and incorporated feedback from MTR effectively for app improvements, ensuring alignment with user requirements and enhancing overall functionality.

Worked in a team to create a Google Cardboard VR demonstration app at PhD student Ms. Laura Hopes' request for her study of the environment in Devon, UK

Helped to develop a game for primary students with Special Education Needs (SEN) to learn Chinese words and phrases