Chinaza U.

Mobile Developer

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Bio

Chinaza B. is a versatile and accomplished mobile developer with extensive experience across Android and cross-platform technologies. He has led and contributed to mission-critical projects in fintech, community management, and food delivery, excelling in roles such as Senior Android Engineer at VPD Money, Senior Mobile Engineer at Zamani, and Android Developer at Livo Food and MMG Africa. Chinaza’s technical expertise spans Kotlin, Java, Jetpack Compose, Android Views (XML), Coroutines, Flow, LiveData, Clean Architecture,…

  • Projects completed3
  • Hourly rate
  • 3-4 years experience
  • Member since Dec 2025
Expertise
FlutterKotlinJavaSQLGit
Video Intro
Assessments

General Project Assessment

Great on Design an Efficient API Integration Strategy for E-Commerce, Difficulty Medium · Great on Design a Real-Time Financial Data Flutter Application, Difficulty Medium · Great on Manage State in Flutter with Nested Components, Difficulty Medium

Projects

Zamani

The Zamani Mobile project was designed to streamline estate and community management by providing a secure, digital platform for residents, developers, operations teams, and security personnel. The application enabled seamless onboarding through QR and access‑code verification, household and visitor management, and digital access control with one‑time and multi‑use codes. It also integrated a complete wallet and payments system for utilities, dues, and services, while offering transaction summaries and confirmation flows. The project emphasized a polished, theme‑driven UI with responsive layouts, dark/light mode support, and smooth animations, ensuring a modern user experience. By combining secure storage, dependency injection, and reactive controllers, Zamani delivered a scalable solution that improved community operations, enhanced security, and simplified financial interactions for users.

Livio Food

The Livio Food project was designed to transform the way people order meals and discover recipes by offering a modern, reliable Android application that connects users with restaurants and authentic African cuisine. With over 100,000 downloads on Google Play, the app has established itself as a trusted platform for food lovers, combining convenience with cultural relevance. It enabled seamless food ordering and real-time delivery tracking through Google Maps integration, ensuring transparency and efficiency for customers. The application also provided a rich recipe browsing experience, allowing users to explore and prepare diverse African dishes while improving engagement and retention. Secure payment flows were implemented using Paystack, with PCI DSS-compliant practices such as encryption and biometric authentication to safeguard transactions. The user interface was built with Jetpack Compose and Android Views, delivering responsive layouts, dark and light mode support, and smooth transitions across devices. By optimizing state management, caching, and network handling, Livio Food reduced customer service tickets and improved overall reliability. Through its blend of technical excellence, cultural impact, and user-focused design, Livio Food became a scalable solution that enhanced everyday dining experiences and strengthened digital food services across Nigeria.

Credpal

The CredPal project was designed to provide seamless financial services across developing economies by offering a secure, cross‑platform mobile application. The app empowers users to make payments, save, invest, and access credit all in one place, simplifying financial management for everyday life. It integrates biometric authentication and payment SDKs to ensure secure transactions, while also supporting virtual cards that give users control over spending with advanced security features such as tokenization and spending limits. The application emphasizes accessibility and convenience, enabling users to pay for bills, utilities, transportation, and food orders with the flexibility to pay immediately or defer payments. CredPal’s marketplace further allows customers to shop across a wide range of merchants and pay in installments, making credit access more inclusive. The mobile experience was enhanced through performance optimizations, caching, and responsive UI design, ensuring smooth operation even on low‑end devices. From a technical perspective, the app was built using Flutter and Dart, leveraging state management patterns like Bloc and GetX, and integrating backend APIs with JSON serialization and OpenAPI SDKs. These architectural choices supported scalability and maintainability, while shared libraries and reusable components streamlined development across multiple internal projects. By combining secure engineering practices, modern UI/UX, and robust financial integrations, CredPal delivered a scalable solution that improved credit accessibility, enhanced user trust, and simplified financial interactions for over 100,000 users.

Experience

  1. Flutter Developer

    CredpalMay 2025 — Present
    • Developed cross-platform mobile features for CredPal’s app using Flutter, Dart, state management, and backend API integration.
    • Integrated biometric authentication and payment SDKs, collaborating with the mobile team to ensure consistent behavior across both platforms.
    • Improved app responsiveness and user experience by optimizing network calls, caching data, and reducing jank on low-end devices.
    • Contributed to shared libraries and reusable components leveraged across multiple internal projects.
    • Participated in code reviews, Agile ceremonies, and cross-functional planning with design, mobile, QA, and backend teams.
    FlutterDartBlocLazy Loading OptimizationJSON SerializationPostman/SwaggerREST APIs & RetrofitRoom DatabaseSQLiteGit / GitHub

  2. Senior Flutter Mobile Engineer

    Zamani MobileJul 2025 — Present
    • Architected and developed a multi-role estate/community application for Residents, Developers, Operations, and Security using clean architecture and modularization.
    • Built onboarding flows using QR / access-code verification, community/estate binding, and house assignment and engineered secure digital access control system: QR codes, one-time codes, multi-use access codes, household/staff/visitor permissions.
    • Delivered a complete wallet & payments system: dues, utilities, electricity, waste, data, airtime, with transaction summaries, breakdowns & confirmation flows.
    • Delivered a polished, theme-driven UI with custom Material theme, responsive typographies, SVG assets, dark/light mode support, and animation-supported transitions.
    • Integrated OpenAPI client SDK, secure storage, DI, and reactive controllers.
    DartFlutterGetxMVVMOpenAPI Client SDKPostman/SwaggerSecure storageQr-Code decryptor

  3. Android Developer

    Livio FoodJun 2023 — Sep 2025
    • Led and maintained Android features for the Livo Food app including food ordering, real-time order tracking, search, notifications, and recipe browsing.
    • Integrated Paystack payment gateway for smooth checkout and secure payment flows.
    • Implemented location services and Google Maps APIs for driver tracking and live delivery updates.
    • Developed UI screens using Jetpack Compose and Android Views, ensuring responsive layouts across different devices.
    • Improved user experience and reduced customer-service tickets by 15% through better state management, clearer order statuses, and push notifications.
    KotlinJetpack ComposeAndroid Views(XML)Google Maps SDKLocation ServicesFusedLocationProviderPaystack Android SDKPush Notifications (Firebase Messaging)Coil/Glide

  4. Android Developer

    MMG AfricaMar 2022 — Jul 2024
    • Spearheaded the Finarium project from conception to launch, acting as the sole developer responsible for all aspects of design, development, and implementation.
    • Developed and maintained core Android features for the Finarium mobile application, using Kotlin, Android Jetpack, Room, Retrofit, and MVVM architecture.
    • Built secure authentication flows, including biometric authentication, PIN setup, and encrypted session handling.
    • Integrated third-party payment SDKs and ensured secure handling of financial transactions and user data.
    • Improved app performance through profiling, memory optimization, background threading using Coroutines, and reducing unnecessary network calls and wrote reusable components and followed Clean Code, SOLID principles, and testable architecture patterns.
    KotlinViewmodelLiveDataNavigationRoomRetrofitOkHttpCoroutinesMVVM ArchitectureHilt/Dagger (DI)

  5. Senior Android Engineer

    VPD MoneyMay 2023 — Nov 2024
    • Led development of mission-critical fintech features used by 10,000+ active users, including transaction management, recurring payments, transfers, wallet operations and notifications.
    • Designed and implemented scalable mobile architectures (Clean Architecture + MVVM + Repository + Use Cases) to support complex financial workflows.
    • Built real-time balance and transaction updates pipelines using WebSockets with resilient reconnection strategies to deliver instant balance updates, transaction histories, and notifications with high reliability.
    • Improved app stability, reliability, and performance, reducing crash rates by 30% through profiling, systemic debugging, memory optimization, concurrency improvements, thread management, network stabilization and JVM tuning.
    • Ensured full PCI DSS compliance, including secure storage practices, encryption, tokenization, and 2FA/Biometric authentication.
    KotlinJetpack ComposeAndroid Views (XML)CoroutinesWebSocketsRetrofitRoomMVVM ArchitectureRESTful APIsTLS/SSLJWTOAuth2Biometric authentication APIsProGuard/R8
Education

  1. Bachelor of Science

    Lagos State UniversityLagos, Nigeria2022 — 2025
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