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

I'm Kasun Jayawardhana, a junior software engineer with hands-on experience in cross-platform Flutter mobile development and full-stack mobile applications. I enjoy turning ideas into reliable, scalable apps using Flutter/Dart, REST APIs, and modern state management patterns. I have contributed to open-source Flutter packages and implemented authentication flows with JWT and token refresh. I thrive in collaborative, fast-paced teams and love crafting maintainable UI and robust architectures. I'm currently contributing to ONG Groups (Pvt) Ltd in Colombo, Sri Lanka, while exploring DevOps concepts like Docker, Kubernetes, and AWS to build end-to-end solutions and optimize delivery.…I'm Kasun Jayawardhana, a junior software engineer with hands-on experience in cross-platform Flutter mobile development and full-stack mobile applications. I enjoy turning ideas into reliable, scalable apps using Flutter/Dart, REST APIs, and modern state management patterns. I have contributed to open-source Flutter packages and implemented authentication flows with JWT and token refresh. I thrive in collaborative, fast-paced teams and love crafting maintainable UI and robust architectures. I'm currently contributing to ONG Groups (Pvt) Ltd in Colombo, Sri Lanka, while exploring DevOps concepts like Docker, Kubernetes, and AWS to build end-to-end solutions and optimize delivery.

Kasun Jayawardhana

Full Stack Developer, App Developer, Front-End Developer, +4





I'm Kasun Jayawardhana, a junior software engineer with hands-on experience in cross-platform Flutter mobile development and full-stack mobile applications. I enjoy turning ideas into reliable, scalable apps using Flutter/Dart, REST APIs, and modern state management patterns. I have contributed to open-source Flutter packages and implemented authentication flows with JWT and token refresh. I thrive in collaborative, fast-paced teams and love crafting maintainable UI and robust architectures. I'm currently contributing to ONG Groups (Pvt) Ltd in Colombo, Sri Lanka, while exploring DevOps concepts like Docker, Kubernetes, and AWS to build end-to-end solutions and optimize delivery.…I'm Kasun Jayawardhana, a junior software engineer with hands-on experience in cross-platform Flutter mobile development and full-stack mobile applications. I enjoy turning ideas into reliable, scalable apps using Flutter/Dart, REST APIs, and modern state management patterns. I have contributed to open-source Flutter packages and implemented authentication flows with JWT and token refresh. I thrive in collaborative, fast-paced teams and love crafting maintainable UI and robust architectures. I'm currently contributing to ONG Groups (Pvt) Ltd in Colombo, Sri Lanka, while exploring DevOps concepts like Docker, Kubernetes, and AWS to build end-to-end solutions and optimize delivery.

Available to hire

I’m Kasun Jayawardhana, a junior software engineer with hands-on experience in cross-platform Flutter mobile development and full-stack mobile applications. I enjoy turning ideas into reliable, scalable apps using Flutter/Dart, REST APIs, and modern state management patterns. I have contributed to open-source Flutter packages and implemented authentication flows with JWT and token refresh. I thrive in collaborative, fast-paced teams and love crafting maintainable UI and robust architectures.

I’m currently contributing to ONG Groups (Pvt) Ltd in Colombo, Sri Lanka, while exploring DevOps concepts like Docker, Kubernetes, and AWS to build end-to-end solutions and optimize delivery.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Javanese

Advanced

English

Fluent

Work Experience

Junior Software Engineer at IONG Groups (Pvt) Ltd

March 31, 2025 - September 24, 2025

Gained hands-on experience in multi-platform development and codebase management

Associate Software Engineer at IONG Groups (Pvt) Ltd

December 31, 2024 - September 24, 2025

Developed and maintained Mobile Applications using Flutter for Android and iOS; implemented responsive UI designs from Figma; integrated RESTful APIs; implemented BLoC for state management; optimized app performance reducing loading times; participated in Agile processes; supervised a Flutter development intern.

Software Engineer Intern (Mobile) at IONG Groups (Pvt) Ltd

March 1, 2025 - September 24, 2025

Gained hands-on experience in multi-platform development and codebase management.

Software Engineer at IONG Groups (Pvt) Ltd

March 1, 2025 - Present

Develop and maintain Mobile Applications using Flutter for both Android and iOS platforms. Implement responsive UI designs from Figma mockups with 98% pixel-perfect accuracy. Integrate RESTful APIs for seamless data exchange between mobile apps and backend services. Implement BLoC pattern for state management across multiple applications. Optimize app performance, achieving a significant reduction in loading times. Participate in Agile development processes, including daily stand-ups and sprint planning. Guide and supervise a Flutter development intern, providing technical support and code reviews.

Junior Software Engineer at ONG Group (Pvt) Ltd

March 1, 2025 - September 24, 2025

Gained hands-on experience in multi-platform development and codebase management while contributing to Flutter-based mobile solutions.

Associate Software Engineer at ONG Group (Pvt) Ltd

March 1, 2025 - Present

Developed and maintained Mobile Applications using Flutter for both Android and iOS platforms; implemented responsive UI designs from Figma mockups; integrated RESTful APIs for seamless data exchange; implemented BLoC pattern for state management; optimized app performance reducing loading times by ~40%; participated in Agile processes; guided a Flutter development intern; provided technical support and code reviews.

Flutter Styling Text Editor Package (Open Source) at Open Source

March 1, 2025 - Present

Developed and published a Flutter package enabling real-time text styling and live preview; achieved a perfect 160/160 pub points score for code quality, documentation, and best practices; implemented customizable text styling options and responsive preview.

Junior Software Engineer at IONG Groups (Pvt) Ltd

March 31, 2025 - October 17, 2025

Developed and maintained mobile applications using Flutter for both Android and iOS platforms. Implemented responsive UI designs from Figma mockups with 98% pixel-perfect accuracy. Integrated RESTful APIs for seamless data exchange between mobile apps and backend services. Implemented the BLoC pattern for state management across multiple apps. Optimized app performance, achieving a 40% reduction in loading times. Participated in Agile development processes, including daily standups and sprint planning. Guided and supervised a Flutter development intern, providing technical support and code reviews.

Flutter Styling Text Editor Package Maintainer at Open Source (Self-Directed)

March 1, 2025 - Present

Developed and published a Flutter package that enables real-time text styling and preview. Achieved a perfect 160/160 pub points score for code quality, documentation, and best practices. Implemented customizable text styling with formatting options and responsive preview. Garnered 100+ downloads with an average rating of 4.8/5. Maintained comprehensive documentation with example implementations and use cases. Implemented comprehensive widget testing with 90%+ code coverage.

Associate Software Engineer at ONG Groups (Pvt) Ltd

December 31, 2024 - December 31, 2024

Contributed to Flutter-based mobile applications and REST API integration; implemented Provider state management; collaborated on modular architecture and efficient UI design.

Junior Software Engineer at ONG Groups (Pvt) Ltd

June 1, 2024 - November 16, 2025

Developed cross-platform mobile apps using Flutter/Dart; implemented authentication flows and REST APIs; collaborated with cross-functional teams to deliver features.

Flutter Styling Text Editor Package (Open Source) at Self-initiated Open Source Project

March 1, 2025 - November 16, 2025

Developed a Flutter package enabling real-time text styling with preview and a clean API; achieved 160/160 pub points for code quality and documentation; 100+ downloads with a 4.8/5 average rating; comprehensive widget tests with 90%+ code coverage.