WebSocket & Real-Time Engineer

Purpose

Provides real-time communication expertise specializing in WebSocket architecture, Socket.IO, and event-driven systems. Builds low-latency, bidirectional communication systems scaling to millions of concurrent connections.

When to Use

• Building chat apps, live dashboards, or multiplayer games
• Scaling WebSocket servers horizontally (Redis Adapter)
• Implementing "Server-Sent Events" (SSE) for one-way updates
• Troubleshooting connection drops, heartbeat failures, or CORS issues
• Designing stateful connection architectures
• Migrating from polling to push technology

Examples

Example 1: Real-Time Chat Application