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Never leave anyway anything for tomorrow, which you can do today
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Never leave anyway anything for tomorrow, which you can do today

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RootHex200/README.md

Hi, I'm Sabitur Rahman

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)


Contact & Links


Open-Source Contributions

Flutter Core (flutter/flutter)

  • Contributed bug fixes to official Flutter framework
    PRs: #175706, #175303

BunnyWay Repositories

Packages Published on pub.dev


Skills

Expertise: Dart • Flutter • Android
Familiar: REST API • Laravel • CI/CD
Comfortable: Kotlin • Native Android • Clean Architecture • Web Security • Test Code (Mockito)


Work Experience

Software Engineer — FIGLAB

(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:


App Developer — Limerick Resources Limited

(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:


🏅 Achievements

  • Champion – MIST Leetcon 2023 (CTF Event)
  • 1st Runner-Up – IUTCTF 2024 (CTF Event)

Pinned Loading

  1. Reminder_App Reminder_App Public

    This is a Reminder app. user add new task with specific date and time then app notify user on date and time

    Dart 5

  2. Auction-App Auction-App Public

    In this app user can new auction post and see all bid list and update bid list.and check dashboard of summary of product

    Dart 3

  3. BD_Result BD_Result Public

    "BD Result" is an Android app designed to assist you in quickly accessing your Board Exam results and producing a printable PDF document

    Dart 3

  4. WeatherApp WeatherApp Public

    Native android practice weather app using kotlin with different architecture and different approach

    Kotlin 2

  5. Flutter_Custom_Paint_Animation Flutter_Custom_Paint_Animation Public

    Dart 1