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1 Real-Time Chat with Voice Call and Messaging PFE

Code Reason

StageHybride3 moisDate limite : 26 nov. 2025
frontend developmentReal-Time Communicationsbackend development

Postuler

Description

Project Objective

  • Improve an existing chat system by integrating real-time voice calling and voicemail functionalities.
  • Ensure seamless messaging and call experience between users with low latency and reliable reconnection strategies.

Technical Stack & Architecture

  • Frontend: Next.js for UI and WebRTC for peer-to-peer audio streams.
  • Backend: Node.js with Socket.io for signaling and real-time message exchange; MongoDB for message/voicemail storage.
  • Services: Twilio (voice) for PSTN/inbound/outbound call handling and voicemail integration.

Responsibilities & Tasks

  • Implement WebRTC-based voice call setup and media handling within the Next.js application.
  • Integrate Socket.io signaling on backend (Node.js) to manage call/session negotiation, presence, and messaging events.
  • Build voicemail recording, storage in MongoDB, and playback mechanisms; connect voicemail storage with Twilio when required.
  • Handle error cases, reconnection logic, NAT traversal (STUN/TURN), and call state synchronization between clients and server.

Non-functional Requirements

  • Low latency and robust reconnection behavior for voice calls and messaging.
  • Proper handling of concurrent sessions, message ordering, and delivery acknowledgements.
  • Basic security considerations for media and signaling channels (use HTTPS/WSS, secure session tokens).

Expected Deliverables

  • Working Next.js frontend demonstrating text chat, one-to-one voice call, and voicemail playback UI flows.
  • Node.js + Socket.io backend implementing signaling, message delivery, and voicemail API endpoints; MongoDB schema for messages/voicemails.
  • Integration tests or manual test plan demonstrating call setup, teardown, voicemail recording/playback, and edge cases.

Skills & Qualifications

  • Experience with React/Next.js and WebRTC concepts (getUserMedia, RTCPeerConnection, ICE candidates).
  • Familiarity with Node.js, Socket.io, and MongoDB; ability to design simple REST/WebSocket APIs.
  • Experience integrating third-party voice services (Twilio) is a strong plus.

How to apply

  • Send your CV, a short motivation, and links to any relevant projects or demos to issam@code-reason.com.
  • Email subject: "Application for Real-Time Chat with Voice Call and Messaging PFE"