Firebase on Android Developer for Real Time Features and App Integration

We are hiring an experienced Firebase on Android Developer to integrate powerful cloud based features into our mobile application. The ideal developer understands how Firebase behaves inside real Android environments, how to manage real time updates, secure user authentication, offline handling, push notifications and structured Firestore or Realtime Database design.

In this project, you will implement Firebase Authentication, Cloud Firestore, Cloud Messaging, Storage, remote config features and secure cloud operations. You must understand how to connect Kotlin based Android apps with Firebase services efficiently while ensuring stability, speed and data integrity. Knowledge of async programming, coroutines, Flow and advanced data syncing is highly valuable.

You will work closely with our Android foundations developer, backend team and UI designers to ensure data flows smoothly between app screens and the Firebase backend. The goal is to build a fast, secure and reliable experience that automatically syncs across devices, handles offline usage gracefully and supports scalable architecture as the app grows.

If you enjoy building real time mobile experiences, working with cloud services and designing flexible data structures that grow with the product, this role will be an excellent match.

✅ KEY RESPONSIBILITIES

Integrate Firebase Authentication into the app

Connect app screens to Cloud Firestore or Realtime Database

Build CRUD operations with secure rules

Implement push notifications using Firebase Cloud Messaging

Handle file uploads and downloads using Firebase Storage

Manage offline support and data persistence

Implement user profile flows and token handling

Set up remote config for dynamic app behavior

Write Firebase security rules for data protection

Optimize read and write operations for speed

Debug Firebase issues using console and logs

Collaborate with backend team if hybrid services are required

Create helper classes for repeated Firebase operations

Test real time data syncing on different network conditions

Document Firebase architecture and integration steps

✅ REQUIRED SKILLS

Strong Kotlin development experience

Experience with Firebase Authentication

Knowledge of Cloud Firestore or Realtime Database

Ability to write secure Firebase rules

Familiarity with Firebase Cloud Messaging

Understanding of asynchronous operations and coroutines

Experience with Firebase Storage

Basic knowledge of Firebase Hosting optional

Ability to debug using Android Studio and Firebase logs

Understanding of offline data strategies

Knowledge of MVVM architecture

Clear and structured coding habits

Git version control skills

Good communication and teamwork

Portfolio with Firebase based Android apps

✅ TOOLS AND TECHNOLOGIES

Android Studio

Kotlin

Firebase Authentication

Cloud Firestore or Realtime Database

Firebase Cloud Messaging

Firebase Storage

Firebase Remote Config

GitHub or GitLab

Postman for testing API functions if needed

Crashlytics for error monitoring

✅ DETAILED TECHNICAL BREAKDOWN

Core Competency

You should understand how to build Firebase backed Android features with predictable data flow, secure access and real time syncing while keeping performance balanced.

Technical Workflow

Connect the app to Firebase console

Configure auth providers such as email, phone or Google

Set up Firestore collections and subcollections

Implement reading and writing with listeners or Flow

Handle offline caching and synchronization

Configure push notifications and device tokens

Test using poor network conditions

Secure the backend with strict rules

Best Practices

Use Firestore batched writes where suitable

Keep Firebase rules simple but secure

Avoid unnecessary reads to reduce cost

Perform local caching to improve speed

Log key events for tracking

Simple Code Example

fun saveUser(user: UserData) {

    val docRef = Firebase.firestore.collection("users").document(user.id)

    docRef.set(user)

        .addOnSuccessListener { println("User saved") }

        .addOnFailureListener { println("Save error") }

}

✅ SERVICE TYPES AND SPECIALIZATIONS

Full Firebase app integration

Authentication system setup

Firestore or Realtime Database design

Notification setup with Cloud Messaging

Storage upload and download features

Remote config and dynamic behavior

Offline data support and syncing

Long term Firebase maintenance

✅ DELIVERABLES

Fully integrated Firebase backend features

Authentication and user profiles

Real time database or Firestore structure

Push notification setup

File storage features

Offline caching and sync logic

Documentation for Firebase setup

Two revision cycles

Post launch support for two to four weeks

✅ BUDGET OPTIONS

Hourly rate: 30 to 85 dollars

Project based price: 1200 to 15000 dollars

Monthly retainer: 2000 to 7000 dollars

✅ TIMELINE

Firebase setup and auth: 3 to 5 days

Firestore or Realtime Database integration: 1 to 2 weeks

Notifications and storage: 4 to 7 days

Testing and optimization: 3 to 6 days

Timeline varies depending on complexity and number of Firebase modules.

✅ SUCCESS METRICS AND KPIs

Fast real time syncing

Zero security rule violations

High data accuracy

Consistent offline and online switching

Successful delivery of push notifications

Stable performance on varying network speeds

Positive user feedback on responsiveness

✅ CALL TO ACTION

If you are a Firebase on Android Developer who can build secure, real time and scalable features, submit your proposal with your app portfolio, development workflow, estimated timeline and pricing.

We respond to detailed proposals within twenty four hours.