Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Yong Xiang, a passionate Full Stack Software Engineer and Certified Scrum Master with extensive experience in developing mobile applications using Flutter, backend APIs, and IoT technologies. I enjoy designing and launching user-friendly systems that solve real-world problems and thrive in agile environments where collaboration and communication are key. I have worked on various projects ranging from queue system mobile apps to enterprise-level membership platforms, integrating technologies like Stripe, Firebase, and AWS services. I am always eager to learn new skills and take on fresh challenges in software development and project management.…Hi, I’m Yong Xiang, a passionate Full Stack Software Engineer and Certified Scrum Master with extensive experience in developing mobile applications using Flutter, backend APIs, and IoT technologies. I enjoy designing and launching user-friendly systems that solve real-world problems and thrive in agile environments where collaboration and communication are key. I have worked on various projects ranging from queue system mobile apps to enterprise-level membership platforms, integrating technologies like Stripe, Firebase, and AWS services. I am always eager to learn new skills and take on fresh challenges in software development and project management.

Wong Yong Xiang

Full Stack Developer, Developer, Programmer, +2





Hi, I’m Yong Xiang, a passionate Full Stack Software Engineer and Certified Scrum Master with extensive experience in developing mobile applications using Flutter, backend APIs, and IoT technologies. I enjoy designing and launching user-friendly systems that solve real-world problems and thrive in agile environments where collaboration and communication are key. I have worked on various projects ranging from queue system mobile apps to enterprise-level membership platforms, integrating technologies like Stripe, Firebase, and AWS services. I am always eager to learn new skills and take on fresh challenges in software development and project management.…Hi, I’m Yong Xiang, a passionate Full Stack Software Engineer and Certified Scrum Master with extensive experience in developing mobile applications using Flutter, backend APIs, and IoT technologies. I enjoy designing and launching user-friendly systems that solve real-world problems and thrive in agile environments where collaboration and communication are key. I have worked on various projects ranging from queue system mobile apps to enterprise-level membership platforms, integrating technologies like Stripe, Firebase, and AWS services. I am always eager to learn new skills and take on fresh challenges in software development and project management.

Available to hire

Hi, I’m Yong Xiang, a passionate Full Stack Software Engineer and Certified Scrum Master with extensive experience in developing mobile applications using Flutter, backend APIs, and IoT technologies. I enjoy designing and launching user-friendly systems that solve real-world problems and thrive in agile environments where collaboration and communication are key.

I have worked on various projects ranging from queue system mobile apps to enterprise-level membership platforms, integrating technologies like Stripe, Firebase, and AWS services. I am always eager to learn new skills and take on fresh challenges in software development and project management.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Chinese

Fluent

Malay

Intermediate

Work Experience

Freelance Software Engineer

May 1, 2024 - Present

Developed and launched a queue system mobile app using Flutter, integrating thermal printer connectivity via Bluetooth and native SDKs. Created an enterprise-level membership mobile app with features such as Riverpod state management, voucher purchase, QR code scanning, Fortune Wheel animation, Stripe Payment Gateway integration, and Firebase Push Notifications. Maintained backend APIs with PHP and built websites using WordPress and Elementor.

Full Stack Software Engineer | Scrum Master at Osim International Pte Ltd

May 1, 2024 - July 28, 2025

Conducted scrum ceremonies including Daily Stand Up, Sprint Planning, Review, and Retrospective. Developed mobile applications with Flutter and IoT technology using MVVM architecture and NoSQL databases. Implemented features such as image upload for feedback, device control panels, schedulers, and Bluetooth device management. Built backend APIs with .NET 6, managed relational and non-relational databases, and utilized AWS services like DynamoDB, EC2, S3, Lambda, and MQ. Developed Python scripts for data analytics and used GitHub for CI/CD and version control.

Software Engineer at Wizvision Pte Ltd

February 1, 2021 - July 28, 2025

Upgraded Sitefinity websites and maintained multiple Singapore government systems with C# .NET. Developed web services, conducted requirement gathering sessions with clients, and managed project timelines.

Solution Developer at PCCW Solutions

April 30, 2019 - July 28, 2025

Developed APIs using C# .NET and AWS services, enhanced security through data encryption and decryption, and conducted research and development on payment gateway technologies.

Web Developer at Web Professional House Pte Ltd

November 1, 2018 - July 28, 2025

Managed tasks and provided team guidance. Maintained and built websites with Sitecore CMS and C# .NET. Managed AngularJS websites and migrated servers to new environments including full setup.

Freelance Software Engineer

May 1, 2024 - Present

Developed and launched queue system mobile app with Flutter, including Bluetooth connection to thermal printer and integration of third party native SDK. Created enterprise-level membership mobile app using Riverpod for state management with features such as voucher purchase, QR code scanning, Fortune Wheel animation, Stripe Payment Gateway, and Firebase Push Notification. Maintained backend API using PHP and developed websites with Wordpress and Elementor.

Full Stack Software Engineer | Scrum Master at Osim International Pte Ltd

May 31, 2024 - July 28, 2025

Led scrum events like Daily Stand Up, Sprint Planning, Review and Retrospective. Developed mobile applications with Flutter and IoT technology using MVVM architecture and NoSQL databases. Built features such as image upload for feedback, device control panels for IoT and Bluetooth devices, scheduler and device pairing modules with secure data transmission. Developed backend APIs using .NET 6 with relational and non-relational databases. Utilized AWS services including DynamoDB, EC2, S3, Lambda, and MQ. Automated data analytics scripting using Python. Managed CI/CD and version control with GitHub.

Software Engineer at Wizvision Pte Ltd

February 1, 2021 - July 28, 2025

Upgraded Sitefinity website and maintained multiple Singapore government systems using C# .NET. Developed web services, conducted client requirement gathering sessions, and managed project timelines.

Solution Developer at PCCW Solutions

April 30, 2019 - July 28, 2025

Developed APIs with C# .NET and AWS services, enhanced security with data encryption and decryption, and conducted research and development on payment gateway integration.

Web Developer at Web Professional House Pte Ltd

November 1, 2018 - July 28, 2025

Managed tasks and provided guidance to team members. Maintained and built websites using Sitecore CMS and C# .NET, managed AngularJS-based website features, and migrated servers to new environments performing full setups.