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I will integrate rest API, firebase sdk or third party backend into your android app
Android App Developer, Kotlin, Jetpack Compose , Firebase, 4 Yrs Exp
Hi, I’m Vaishali, a passionate Android Developer with 4+ years of experience building high-quality mobile applications using Kotlin and Java.
I specialize in creating clean, scalable, and user-friend...
About this Gig
Need to integrate an API, payment gateway, or SDK into your Android app?
I'm Vaishali, an Android developer with 4+ years of experience in Kotlin and Java. I build clean, production-ready integrations that work reliably in real apps.
- Payment & Transaction Razorpay, Stripe, PayPal, Paytm,subscription billing
- Login & Authentication: Firebase Auth, Google Sign-In, Facebook Login, OTP verification, Twilio, OAuth2, API key-based auth
- Maps & Location Google Maps SDK, Places API
- Notifications & Messaging: Firebase FCM, OneSignal push notifications, WhatsApp Business API,
- Backend & Database REST API integration with Retrofit ,Firestore, Firebase Storage,
- Analytics & Monetization Google AdMob ads integration Firebase Analytics, Crashlytics,
What you get
- Working, tested integration in your existing Android project
- Full source code, no black box delivery
- Clear explanation of what was done and how to use it. Revisions included (see packages)
My Technical Approach
- MVVM architecture with Repository pattern
- Kotlin Coroutines
- Proper loading states
- Secure API key storage
- No hardcoded credentials
- Clean, well-commented code you can maintain
My Portfolio
Other Mobile App Maintenance Services I Offer
FAQ
What information do you need to start?
API documentation or Postman collection, your Android project files, API base URL, authentication method, and which screens should display the data. The more detail you share, the faster I can deliver.
Do you work with APIs that require authentication?
Yes — JWT, OAuth2, API keys, Basic Auth, and session-based auth are all supported. Secure credential storage using Android Keystore is included in Standard and Premium packages.
My API is not documented properly. Can you still help?
Yes, send me what you have — even a rough description of request/response structure is enough to get started. I can also help you reverse-engineer endpoints from a working web app if needed.
Can you integrate multiple APIs in one order?
The Basic package covers 1 API. For multiple APIs or a full backend integration, the Standard or Premium packages are the right fit. You can also message me for a custom quote.
Will you use Retrofit, Volley, or something else?
I default to Retrofit + OkHttp with Coroutines, which is the industry standard for Android. If your project already uses Volley or Ktor, I can work with that too.
