I will integrate payment gateway firebase or apis into your mobile app

P
pankaj0619
P
pankaj0619
Pankaj Jangid

About this gig

Need to connect your Android or Flutter app to a backend, payment system, or API? I will integrate it cleanly and reliably.


With 9+ years of mobile development, I have integrated hundreds of APIs across banking, e-commerce, and startup apps.


What I integrate:

- Firebase (Auth, Firestore, Cloud Functions, FCM, Analytics)

- Payment gateways (Stripe, Razorpay, PayPal, in-app purchases)

- REST APIs and GraphQL endpoints

- Google Maps, Places, Geocoding

- Social login (Google, Facebook, Apple)

- Push notifications (FCM, OneSignal)

- Any custom API or SDK


What you get:

- Clean integration following your app architecture

- Proper error handling and offline support

- Documentation and usage guide

- Source code via GitHub or ZIP


Share your app details and the API you need for a plan.

Get to know Pankaj Jangid

Pankaj Jangid

Android Developer Building Secure and Scalable Apps for 9 Years

5.0(2)
  • FromIndia
  • Member sinceDec 2016
  • Last delivery5 years
  • Languages

    Hindi, English
Senior Android Developer by day, freelancer by passion. 9+ years building apps used by millions. I help startups turn ideas into polished Android apps. What you get: - Custom Android app with Kotlin and Jetpack Compose - Clean architecture that scales with your business - Payment integration, Firebase, API setup - Play Store deployment included - Flutter if you need iOS too Why hire me: - Built apps for a SE Asian bank and Decathlon India - 96% crash-free rates in production - Clear communication, no jargon Message me your app idea for a free estimate.