- Designed and Built backend CCTV system integration, features included real-time streaming using WebRTC, 24-hour cloud backup (S3), AI integration and clipping video on point of interest. The system is deployed by the Hong Kong Government, covering four shorelines and two residential estates.- Developed a building inspection report platform integrated with AI for defect detection, featuring manual data editingtools (annotation tools) and automated generation of building inspection reports compliant with HKHA standards.- Built a real-time dashboard incorporating people-counting camera integration for the Hong Kong Waterfront Carnival.- Contributed to the development of the Smart Command Theatre (Beanie 6.0) in Unity, including integrating real-time IoT sensor data and alerts, enabling IoT device lookup in 3D space, and incorporating city building construction progress.- Developed, refactored, and enhanced the existing backend system and Carsh mobile application. Rewrote the existing codebase from JavaScript to TypeScript, and built microservices to handle integration with car damage detection AI and drawing segmentation on detected areas.- Migrated AWS server located in Ohio to the Hong Kong region to reduce user latency.- Managed application backend infrastructure using Docker, Docker Compose and creating application boilerplate and standard for mobile (React Native), web (React) and backend (NestJS) used across multiple projects.- Managed AWS infrastructure (IAM, EC2, RDS, S3, SES, SNS), Conducted regular security and billing checks.- Collaborated with UI/UX designers across multiple projects to built both web and mobile applications using React and React Native.

Manage, mentored, and develop a team of engineers for the development of World Wide Fund Singapore.- Built Backend system for WWF Sustainable Banking Assessment (SUSBA), Sustainable Financial Regulations and Central Bank Activities (SUSREG), Resilient and Sustainable Portfolios that Protect Nature and Drive Decarbonisation (RESPOND) to clean, preprocess, and reformat assessment data.- Developed backend system using Laravel, NestJS and Go.- Developed internal tools to automate daily backups of databases, utilized across all company products.- Analyze client requirements to craft database and system architecture solutions.- Managed, review, and provide feedback on the work of other engineers.- Mentored junior mobile and backend developers.

- Involved in full product lifecycle from design and development to deployment.- Maintain and develop new features for mobile apps or CMS websites.- Improve code quality and implementation by giving feedback based on framework best practices.

Collaborated with other IT assistants to build websites that are used by campus students and internal users.- Knowledge Sharing Program- Career ISTTS- Main Campus Site- Eclass

- Participated in daily meetings led by the scrum master.- Build and demonstrated internal tools for creating web view android apps, enabling team to create android apps from website. - Fixed bugs and improved performance on LiburanAnak Android apps.- Identify slowdown and high usage on backend by enabling database query logs.

- Slice design to pixel perfect UI and animations.- Coordinated with backend engineer and project manager to develop MVP products.