Flutter Developer passionate about building smooth, scalable, and high-performance mobile applications.
I love working with clean UI, optimized architecture, and reliable functionality.
Author of 4+ pub.dev packages, contributor to Flutter Core, and active open-source enthusiast.
Champion – MIST Leetcon 2023
1st Runner-Up – IUTCTF 2024 (Cybersecurity CTF)
- Email: sabiturrahman60@gmail.com
- Blog: sabitur.com/blog
- GitHub: github.com/RootHex200
- Twitter: twitter.com/RootHex200
- LinkedIn: linkedin.com/in/roothex200
- Added new features & fixed bugs for Android and iOS video player SDKs
Expertise: Dart • Flutter • Android
Familiar: REST API • Laravel • CI/CD
Comfortable: Kotlin • Native Android • Clean Architecture • Web Security • Test Code (Mockito)
(Sept 2024 – Present)
- Built 70% of Klasio LMS (SaaS) mobile app (Android/iOS).
- Created reusable internal packages → 40% reduced dev time.
- Integrated native components via platform views → 40% performance boost.
- Enhanced video player + custom HTML rendering → 30% better engagement.
Live Apps:
(Feb 2024 – Aug 2024)
- Contributed 30%+ to OrderWala & Team OrderWala.
- Used Clean Architecture, BLoC, Isolates, Debouncer.
- Implemented real-time location tracking & printing → 25% productivity boost.
- Improved overall performance and user experience.
Live Apps:
- Champion – MIST Leetcon 2023 (CTF Event)
- 1st Runner-Up – IUTCTF 2024 (CTF Event)