2018-2024

OCBC Singapore Securities Mobile Apps

• Led the development and maintenance of native iOS and Android mobile apps for OCBC Singapore Securities, achieving a 20% improvement in user engagement through enhanced trading capabilities and a seamless user experience.
• Delivered secure updates, including two-factor authentication (2FA), ensuring compliance with financial regulations.
• Added features that enhanced trading functionalities, security, and user engagement, positioning the app as a top contender in a competitive market.
Technologies: Objective C, Swift, Android, REST APIs, Firebase, Jenkins, JSON, Sqlite, Postman

Advisor T Singapore

• Contributed to the creation and enhancement of Advisor T, a mobile solution designed for brokers in Singapore under UOBKH Group.
• Developed and optimized both iOS and Android apps, tailoring for brokers in Singapore, focusing on feature stability and user-friendly interface updates.
• Enabled real-time portfolio management by integrating REST APIs, improving response time by 25%.
Technologies: Objective-C, Swift, Android, REST APIs, Firebase, JSON, Sqlite

UTrade Singapore Mobile Apps

• Re-Invented and managed the continuous development of UTrade’s mobile apps (iOS and Android)for UOBKH Group, adding real-time stock tracking and custom notifications, which increased active user retention by 15%.
Technologies: Objective-C, Java, Android, Firebase, Sqlite

GuruCool Platform (Hybrid)

• Designed and built a Proof of Concept (MVP) for Tetherfi to connect students with internship opportunities, leveraging AWS serverless architecture.
• Utilized Lambda for scalable compute and Amplify for rapid mobile app development, achieving 90% faster time-to-market.
• Ensured reliability with CloudWatch monitoring and integrated a NoSQL database using DynamoDB, handling 10,000+ records with zero downtime.
Technologies: React, AWS Lambda, API Gateway, Amplify, CloudWatch, DynamoDB

2016-2018

SAM Kiosk

• Contributed to the development of Singapore Post's interactive kiosks, deployed across 150+ MRT stations to facilitate advanced bill payments and purchases.
• Gained customer satisfaction by 25% through intuitive UI design and optimized transaction speed.
Technologies: Swift, Objective-C, iOS Enterprise Tools

Crossed Room Management System

• Played as a Systems Analyst in designing and developing a comprehensive room management system for the Ministry of National Development (MND), Building and Construction Authority (BCA), and Agri-Food and Veterinary Authority (AVA), by automating booking processes and reducing manual errors by 40%.
• Delivered a cross-platform app that handled 500+ concurrent users with a secure and scalable backend.
Technologies: .NET, Microsoft SQL, iOS enterprise technologies

Cubic Warehouse Management Mobile App and Back-end Control System

• Built an Android-based warehouse management solution for Cubic Corporation, boosting inventory accuracy by 30% through real-time tracking and barcode scanning.
Technologies: LAMP stack (Linux, Apache, MySQL, PHP/Perl), Android SDK

2014-2015

Yamagin

• Enhanced Yamagin’s e-commerce platform by upgrading backend systems, enabling faster database queries and supporting a 20% increase in concurrent users.
Technologies: Struts2, Spring, Hibernate, JPA, SQL, GWT, Maven

ColayAutomobile

• Improved ColayAutomobile’s search engine visibility through SEO and Solr implementation, resulting in a 40% traffic increase.
• Integrated MIME mailing services, ensuring 99.9% email delivery success rates for customer communications.
Technologies: Solr, Google Analytics, Indexing Server