View detailsLiveEuropean FinTech Banking App at Codego
Flutter Developer · Codego
Mobile banking products supporting account onboarding, IBAN operations, SEPA transfers, and secure access.
FlutterDartBLoCREST APIsFirebase
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Md Azad Hossain
Tutul
Production-ready apps across the full stack
Full-Stack App Developer
Expert Flutter & React developer specializing in FinTech, AI integrations, and production-ready mobile apps. Delivering high-impact SaaS products end-to-end.
FinTech • AI • SaaS5+ Years100% Upwork success
5+
Years of Flutter
200+
Apps delivered
100%
Upwork job success
15+
Happy clients
Fast product launches
Release mobile MVPs with clear scope, polished UX, and reliable production delivery.
FinTech focus
Wallets, transfers, payments, and regulatory-ready flows for modern finance apps.
AI integration
ChatGPT, recommendation, and automation features that make apps smarter.
Featured Work
Top projects with real product impact
Most conversion-ready case studies first: released products, production integrations, and measurable delivery scope.
View detailsLive
View detailsLiveCodegoKYC Identity Verification
Flutter Developer · Codego
Secure digital identity verification platform supporting document scanning and biometric liveness checks.
FlutterDartCamera APIsREST APIs
View detailsLiveFiberVPN Subscription Utility
Flutter Developer · Codego
VPN app with country selection, connection state, premium plan prompts, and payment-ready upgrade flow.
FlutterDartMethod ChannelsREST APIs
Skills
Core delivery stack
Important stack first: Flutter engineering, backend integration, payments, and release pipeline.
Mobile & Hybrid AppsFlutterDartReact NativeAndroidiOSAdaptive UI
Architecture & StateClean ArchitectureBLoCCubitRiverpodProviderRedux
Full-Stack & WebReact.jsNext.jsTypeScriptNode.jsExpress.jsMERN StackGraphQLTailwind CSS
Backend & DatabasesREST APIsFirebaseSupabasePostgreSQLMongoDBDjango
FinTech & Web3FinTechPayment GatewaysDeFiWeb3BlockchainCryptographyKYC
AI & IntegrationsAI Mobile App DevelopmentClaude CertifiedChatGPTGeminiBiometric AuthPush Notifications
Delivery & QualityCI/CDCodemagicCrashlyticsTestFlightApp Store ConnectPlay Console
Expertise
How I help product teams
Four areas that cover a build end to end, from interface to production release.
Mobile & Cross-Platform
Building maintainable Android and iOS applications with Flutter, native integrations, and production-focused architecture.
Web Frontend Engineering
Creating responsive web products, dashboards, and API-driven interfaces using modern JavaScript frameworks.
Backend, APIs & Data
Developing secure APIs, authentication, data flows, and backend services to power cross-platform applications.
Integrations & Delivery
Connecting wallets, AI, and SaaS platforms, then supporting testing, store deployment, and production maintenance.
Process
How project moves from idea to launch
Clear delivery framework to reduce risk and ship faster with predictable milestones.
01 · Idea
Product scope and technical planning
Define user flows, feature priorities, and architecture before coding starts.
02 · Design
UX-first interface and user flow validation
Shape clear wireframes and interaction patterns before feature implementation.
03 · Development
Scalable Flutter build with integrations
Implement clean codebase, APIs, payments, and testing checkpoints sprint by sprint.
04 · Launch
Store release and growth iteration
Publish on Play Store/App Store, monitor quality, and optimize from live user feedback.
Experience
Experience delivering production mobile products
Achievement-focused timeline across fintech, freelance delivery, and engineering leadership.
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.
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.
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.
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.
Testimonials
Client feedback from verified delivery
Public-source review proof and long-term trust from shipped projects.
⭐ 5.0 RatedVerified Upwork Client
"I had a fantastic experience with this developer. They delivered a high-quality Flutter app that perfectly met all requirements, including a successful remote setup and live testing on my device. Their expertise and communication were excellent, and I highly recommend Azad."
Verified Upwork Client
Flutter SMS Forwarder App
Articles
Practical notes from real Flutter projects
Architecture decisions, performance wins, backend choices, and release checklists.
Oct 20, 2025
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.
Oct 16, 2025
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.
Aug 24, 2025
6 Flutter Performance Hacks Every Developer Should Know
Flutter makes beautiful apps fast, but performance is often overlooked. Users don't tolerate lag.
Aug 23, 2025
Flutter + WireGuard VPN: One Codebase, Android and iOS
A complete guide to start, stop, and monitor a WireGuard tunnel from Flutter across both platforms.
Oct 7, 2023
Build and Release an Android App (Flutter)
The definitive guide to signing, building, and releasing your Flutter app to the Play Store.
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