Senior Backend Engineer – Go/Node, Pub/Sub, Remote

Client Server is seeking an experienced backend-focused engineer to join a real-time messaging platform powering developers and businesses. You will work with Go, Node.js, and modern server-side technologies in a flexible, remote-friendly setup with a North London office for occasional collaboration.

The role emphasizes building scalable distributed systems, optimizing performance, and contributing to AI-enabled development workflows, while maintaining ownership of architecture and code quality.