Project 01Live
CodegoPay
Flutter Developer · Codego
Mobile banking products supporting account onboarding, IBAN operations, SEPA transfers, and secure access.
FlutterDartBLoCREST APIsFirebase
View projectPlay Store ↗App Store ↗
Orbit base · Chattogram, Bangladesh
Full-stack work, kept steady when it reaches production.
Md Azad Hossain Tutul builds Flutter, React, and Node.js products for SaaS, FinTech, and AI teams. The Orbit version keeps the story simple, real app work, clean handoffs, and fewer surprises after launch.
Quick facts
Open to new work- Full-Stack Experience
- 5+ Years
- Job Success Score
- 100%
- Client Experience
- Global
01 / About
What the Orbit version is trying to show
I build production software that has to behave after launch. Most of the work lives in Flutter, React, and Node.js, and the product usually needs the same thing in every phase: a clear structure, a clean handoff, and a release path that does not fall apart later.
The Orbit view keeps the story tied to what I actually do, mobile apps, web surfaces, backend APIs, payment flows, and AI features when they make the product better.
The work usually lands in six lanes: Production Flutter Development, Full-Stack Web & Backend, Existing App Improvement, FinTech and Payment Features, AI-Powered Mobile Features, SaaS & HealthTech Solutions.
- Flutter & Dart
- React, Next.js & TS
- Node.js & PHP/Laravel
- PostgreSQL & Firebase
- Clean Architecture
- CI/CD & Deployment
- Payment Systems
- AI & LLM Integrations
02 / Experience
The path so far
Freelance delivery, live banking and payment apps, AI automation, and the earlier Flutter and Django work that shaped the stack.
- UpworkOngoing
Freelance Full-Stack & Mobile Developer · Remote
- Collaborate with international clients to deliver complete end-to-end products, from mobile apps to web platforms.
- Architect and build cross-platform mobile apps using Flutter and React Native.
- Develop robust backend systems and APIs using Node.js, Express, and modern databases.
- Maintain a 100% Job Success Score through clear communication, reliable delivery, and high code quality.
FlutterReact NativeReact.jsNode.jsFirebaseAPI Integration - Codego Group LTDFeb 2024 – Jun 2026
Mobile Application Developer · Remote · Milan, Italy
- Built and maintained live banking and payment apps for iOS and Android, including CodegoPay, GPTBANQ, and Monnay.
- Implemented KYC verification, biometric login, SEPA transfers, and multi-IBAN onboarding.
- Developed Flutter apps with Dart, BLoC, Clean Architecture, and reusable components.
- Integrated REST APIs for accounts, payments, users, transactions, and notifications.
- Used Firebase for push notifications, analytics, crash reporting, and app stability.
FlutterDartBLoCClean ArchitectureFirebaseREST APIsCI/CD - AppDevsFeb 2022 – Oct 2023
Senior Software Engineer · Dhaka, Bangladesh
- Progressed from Intern to Senior Software Engineer, leading a team of 7 Flutter developers.
- Developed AdBot, an AI-powered Google Ads automation app using ChatGPT and OpenAI API.
- Built and maintained production apps across FinTech, e-commerce, AI, and on-demand services.
- Integrated Firebase, REST APIs, Supabase, Unity Ads, and AdMob.
- Recognized as Employee of the Month twice in 2022 and 2023.
FlutterRiverpodGetXOpenAI APISupabaseAdMobGit - Divine IT LimitedOct 2021 – Jan 2022
Software Engineer Intern · Dhaka, Bangladesh
- Gained practical experience in full-stack application development using Flutter and Python Django.
- Developed frontend screens, UI components, and used state management (BLoC, Provider, Riverpod).
- Connected mobile app features with backend APIs and databases.
FlutterDartPython DjangoPostgreSQLProviderREST APIs
03 / Projects
Selected work
FinTech, AI, e-commerce, and utility apps that had to ship for real users, not just look tidy in a grid.
Project 02Live
CodegoKYC
Flutter Developer · Codego
Secure digital identity verification platform supporting document scanning and biometric liveness checks.
FlutterDartCamera APIsREST APIs
View projectPlay Store ↗Website ↗
Project 03Live
FiberVPN
Flutter Developer · Codego
VPN app with country selection, connection state, premium plan prompts, and payment-ready upgrade flow.
FlutterDartMethod ChannelsREST APIs
View projectPlay Store ↗App Store ↗Website ↗
04 / Articles
Recent notes
Short notes from real builds, usually around Flutter, backend choices, performance, and the release process after something goes live.
01Backend
Firebase vs Supabase for Flutter Apps
A practical, SEO-friendly guide comparing two top backends for Flutter in 2025 - ecosystem depth vs SQL-first control.
1 min readMedium
02Delivery
Building Scalable Apps with Flutter: My Process from Idea to Deployment
A behind-the-scenes playbook for founders - based on real projects shipped end to end.
1 min readMedium
03Performance
6 Flutter Performance Hacks Every Developer Should Know
Flutter makes beautiful apps fast, but performance is often overlooked. Users don't tolerate lag.
1 min readMedium
05 / Capabilities
What this stack is actually used for
Mobile apps, web frontends, backend APIs, payment flows, AI features, and the release work that keeps the whole thing shippable.
Cluster 01
Mobile & Hybrid Apps
FlutterDartReact NativeAndroidiOSAdaptive UI
Cluster 02
Architecture & State
Clean ArchitectureBLoCCubitRiverpodProviderRedux
Cluster 03
Full-Stack & Web
React.jsNext.jsTypeScriptNode.jsExpress.jsMERN StackGraphQLTailwind CSS
Cluster 04
Backend & Databases
REST APIsFirebaseSupabasePostgreSQLMongoDBDjango
Cluster 05
FinTech & Web3
FinTechPayment GatewaysDeFiWeb3BlockchainCryptographyKYC
Cluster 06
AI & Integrations
AI Mobile App DevelopmentClaude CertifiedChatGPTGeminiBiometric AuthPush Notifications
Cluster 07
Delivery & Quality
CI/CDCodemagicCrashlyticsTestFlightApp Store ConnectPlay Console
Orbit tracks
The work people usually ask for
These are the six lanes that show up again and again. The language is plain on purpose, because the work itself is already specific enough.
01
Production Flutter Development
Flutter apps for Android and iOS that need a clean structure, API work, and a release path that behaves.
02
Full-Stack Web & Backend
React frontends with the Node.js and database work behind them, kept simple enough to maintain.
03
Existing App Improvement
Bug fixes, refactors, and feature catch-up on code that is already in the wild.
04
FinTech and Payment Features
Wallets, onboarding, KYC, subscriptions, and payment flows that need to stay clear under pressure.
05
AI-Powered Mobile Features
Assistants, search, and generation features that help the product instead of getting in its way.
06
SaaS & HealthTech Solutions
Subscription products and sensitive-data apps that need to stay fast, readable, and secure.
06 / Contact
Get in touch
Open to new work. Use email or Upwork if you want to talk through a Flutter app, a backend, a payment flow, or a cleanup on an app that already exists.
Start here
Have a product that needs to hold up in production?
Send the context: platform, stage, and what is missing or breaking. I’ll tell you what fits, what does not, and where the scope needs to stay realistic.
Core work usually sits around Flutter & Dart, React, Next.js & TS, Node.js & PHP/Laravel, PostgreSQL & Firebase.
Reach me
Chattogram, Bangladesh · Independent / Freelance