l o a d i n g

Android Developer for High-Performance Modern Mobile App

Nov 21, 2025 - Senior

$3,099.00 Fixed

We’re hiring a creative, detail-oriented Android Developer who understands not just coding — but the full lifecycle of delivering a polished mobile experience. You’ll build a modern, elegant, and high-performance Android app with clean architecture, smooth animations, intuitive navigation, and production-grade API integration.


The project combines e-commerce + user management + real-time notifications, designed using a mobile-first approach and powered by Kotlin, Jetpack, MVVM, Retrofit, and Firebase.


You’ll work with UI/UX designers who will provide Figma screens, backend developers for API integration, and QA testers for release cycles. You won’t just “code the screens” — you’ll help shape the app’s performance, interaction patterns, and long-term scalability.


This is a creative + technical role, ideal for someone who gets excited about intuitive flows, clean patterns, and pixel-perfect implementation.


Key Responsibilities


Develop a complete Android app using Kotlin + Jetpack Architecture Components


Convert Figma UI designs into clean, polished, responsive layouts


Implement user authentication (Email, OTP, Google Sign-In)


Integrate REST APIs using Retrofit + OkHttp


Build complex UI components (RecyclerViews, NestedScroll, animations)


Set up Room Database and local offline caching


Integrate Firebase Cloud Messaging (FCM) for real-time notifications


Implement Payment integrations (Razorpay, Stripe, Google Pay)


Optimize the app for speed, memory, and battery efficiency


Write clean MVVM architecture and reusable components


Implement dark mode, accessibility, and device compatibility standards


Perform debugging, profiling, and crash-free optimization


Write unit/UI tests using JUnit + Espresso


Upload builds to Play Console and manage versioning


Work closely with backend, UI/UX, and QA teams for smooth releases


Required Skills


3+ years of hands-on Android development experience


Strong expertise in Kotlin


Deep understanding of Android Jetpack (ViewModel, LiveData, Navigation, WorkManager)


Retrofit, OkHttp, and API data handling


Experience building complex UIs with Material Design 3


Skilled in Room Database, DataStore, Coroutines, Flow


Strong debugging & memory-management skills


Experience with Firebase (Auth, Firestore, Messaging, Analytics)


Familiarity with MVVM and Clean Architecture


Ability to implement in-app payments & 3rd-party API integrations


Understanding of accessibility, UX flows, and mobile interaction patterns


Knowledge of Play Store guidelines, signing keys, and build pipelines


Version control (Git, GitHub)


Great communication skills and ability to work in sprints


Tools & Technologies


Languages: Kotlin


IDE: Android Studio Hedgehog or Latest


Architecture: MVVM + Clean Architecture


Libraries: Retrofit, OkHttp, Room, DataStore, Glide/Coil, Coroutines


Backend: REST APIs, JSON parsing


Cloud: Firebase Authentication, Firestore, FCM


Testing: JUnit, Espresso


Monitoring: Firebase Crashlytics, Logcat, LeakCanary


Deployment: Play Console


Design Handoff: Figma


Deliverables


Full Android App (production-ready)


API-integrated modules (login, products, cart, user profile)


Payment Integration + Notification System


Offline caching + Room Database


App Icons, Splash Screen, and Theme System


Clean codebase with documentation


Test cases for critical flows


2 revision cycles after development


Play Store upload & launch assistance


15–20 days of post-launch bug support


Budget Options


Hourly Rate: $35 – $75/hr


Fixed Project: $4,000 – $10,000


Monthly Retainer (Optional): $3,000 – $6,500 for updates, maintenance & new features


Timeline


Week 1: UI integration, architecture setup


Weeks 2–5: Core feature development + API integration


Week 6: Payment + Notifications + Room DB


Week 7: Testing, optimization, UX refinements


Week 8: Final build, Play Store deployment, support window


Success Metrics


Crash-free rate above 99.5%


App startup time < 2 seconds


Smooth 60 FPS animations & transitions


90%+ UI accuracy compared to Figma designs


Positive user reviews (minimum 4.5 stars)


Stable API performance with no major production bugs


Ideal Candidate Profile


You care about user experience the same way you care about clean code. You think about transitions, error states, accessibility, and edge cases. You want to build apps that feel “premium,” not just “functional.”


If you're the kind of developer who loves shipping production-grade apps and owning the full experience end-to-end — we want you.


How to Apply


Please include:


2–3 published Android apps (Play Store links)


GitHub repo or code sample


Your preferred engagement model (hourly/project)


Short explanation of your architecture approach

  • Proposal: 0
  • More than 3 month
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Brandi Dorsey Inactive
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Nov 11, 2025
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