Hi, I'm

Shaif Mohammad Reasat

Senior Software Engineer crafting performant mobile experiences with Flutter, Dart, and native platforms. 5+ years of building apps used by millions.

Get in touch View projects

Experience

Senior Software Engineer

Nagorik Technologies Ltd.

July 2023 – Present

  • — Led development of white-label Flutter VPN apps for international clients
  • — Architected a Web3 non-custodial crypto wallet on Polygon (Matic) with encrypted private key management
  • — Engineered custom native channeling for VPN protocol clients and native features
  • — Ported iOS apps to macOS using Flutter and Swift, expanding to macOS App Store
  • — Optimized for Android TV and released FireTV version on Amazon App Store
  • — Achieved near-zero crash rates using Flutter DevTools, Firebase Crashlytics, and Microsoft Clarity

Software Engineer

Nagorik Technologies Ltd.

Nov 2021 – June 2023

  • — Developed E-commerce and Ed-tech apps with Bkash and SSL payment gateway integrations
  • — Built real-time chat, voice/video calls, and voice rooms using WebRTC, WebSockets, and FCM
  • — Integrated native Play Billing, StoreKit, RevenueCat, and Stripe for cross-platform payments
  • — Leveraged Firebase Firestore for real-time matchmaking application

Junior Software Engineer

PRAN-RFL Group

Dec 2020 – Nov 2021

  • — Developed native Android applications using Java and OracleDB for in-house solutions
  • — Built employee ID barcode authentication system for factory snack purchases
  • — Automated fuel refills by integrating OracleDB with native Android for real-time logistics

Projects

Android

Remit & Go

Non-Custodial Crypto Wallet

Secure, self-custodial crypto wallet enabling global USDT and POL transfers on the Polygon blockchain. Implemented fiat on-ramp/off-ramp integrations via regulated third-party providers.

Flutter Dart Polygon Web3 Encryption
Android · iOS · macOS · FireTV

EnovaVPN & SharkVPN

VPN Protocol Clients

White-label VPN applications built with Clean Architecture and MVVM. Feature abstraction layer enabling rapid client customization with optimized performance.

Flutter Clean Architecture MVVM Native Channels
EnovaVPN SharkVPN
Android · iOS

Romoni E-commerce

E-commerce Platform Refactor

Modernized legacy application with refined UI, integrated Bkash/SSL payment gateways, and added in-app feed with review engagement and reaction features.

Flutter Bkash SSL Payments Firebase
romoni.com.bd
Android · iOS

DealFinder

Deal Tracking & Activation

Deal discovery and QR-based deal activation app. Used Flutter CustomPainter for UI rendering to optimize performance and reduce asset dependency.

Flutter CustomPainter QR Performance
dealfinder.com.bd

Skills

Languages & Frameworks

Flutter Dart Kotlin Java Swift

Architecture & Design

Clean Architecture MVVM MVC Design Patterns BLoC GetX Provider Unit Testing

Security & Networking

SSL Pinning Obfuscation VPN Protocols Encryption WebSockets WebRTC

Tools & DevOps

Git CI/CD Firebase Suite Google Analytics Android Profiler

Databases

Hive SecureStorage SQLite Firestore OracleDB MySQL

Get in Touch

Open to interesting opportunities and collaborations. Feel free to reach out.

shaif.dihan@gmail.com LinkedIn