Mobile Application Developer

About Lula App:

Lula is an innovative real-time communication and entertainment app, bringing users closer through interactive live video calls, engaging streams, and AI-driven experiences. Our mission is to bridge real-time interactions between streamers and followers through a seamless, scalable in-app experience.

Work Mode:

Type:

What You’ll Be Doing

• Migrate

  the existing backend from Firebase to a

  custom Express.js + PostgreSQL/MongoDB

  stack.
• Replace Firebase Auth with

  custom authentication

  (MSG91 OTP flow) and implement

  role-based access control

  .
• Implement

  WebSocket-based real-time subscriptions

  for faster and more reliable updates.
• Replace Firebase Storage with

  AWS S3

  (or S3-compatible storage) for scalable and secure media management.
• Build

  custom calling functionalities

  (voice/video) using WebRTC or third-party APIs like Agora, Twilio, or GetStream.io.
• Integrate

  GetStream.io

  for real-time chat, message history, typing indicators, and video calling management.
• Implement

  deep linking and screen redirection

  from notifications to specific in-app screens.
• Set up a

  notification system

  for calls, messages, and events, ensuring delivery in

  foreground, background, and killed states

  .
• Resolve

  app crash issues

  and perform ongoing performance optimization to improve speed and reduce bundle size.
• Upgrade Android builds to

  API 35+

  and ensure iOS builds meet the latest App Store requirements.
• Deploy backend services to

  Railway, Render, or Hostinger

  , with proper CI/CD and environment configuration.
• Manage

  Google Play Store

  and

  Apple App Store

  app submissions, updates, and compliance.
• Maintain and update the

  admin panel

  for tracking KPIs, call logs, user activity, and performance data.

What We’re Looking For

• Strong proficiency in

  React Native

  for both Android and iOS platforms.
• Proven experience migrating apps from

  Firebase

  to custom backend architecture in

  Express.js + PostgreSQL/MongoDB

  .
• Solid backend development skills with

  Node.js, Express.js, WebSocket

  , and

  AWS S3

  .
• Hands-on experience with

  real-time communication protocols

  (WebRTC, GetStream.io, Agora, or Twilio).
• Strong understanding of

  push notification systems

  and deep linking in React Native.
• Experience in

  app performance optimization

  , crash resolution, and SDK management.
• Familiarity with

  Google Play Console

  and

  Apple App Store Connect

  for publishing and maintaining apps.
• Strong problem-solving, debugging, and optimization skills.
• Ability to work collaboratively with designers, backend engineers, and product teams to deliver a seamless user experience.