Senior Backend Engineer

Role Overview

As a Senior Erlang Developer , you will be responsible for developing and optimizing backend components that power real-time chat, presence, group messaging, push notifications, and end-to-end encryption. You’ll work on scalable systems capable of handling millions of concurrent users and billions of messages daily.

Key Responsibilities

• Design, build, and maintain real-time, low-latency messaging services using Erlang / OTP .
• Implement and optimize protocols such as XMPP , MQTT , or custom lightweight messaging protocols.
• Build fault-tolerant, distributed backend services capable of scaling horizontally.
• Develop presence systems, user state management, chat history storage, and message delivery tracking.
• Work closely with mobile and frontend teams to integrate APIs and messaging features.
• Contribute to the architecture of end-to-end encryption, message queues, and storage strategies.
• Monitor system performance and implement improvements to reduce latency and resource usage.
• Ensure high availability and zero-downtime deployments with rolling updates and clustering strategies.
• Collaborate in code reviews, architectural discussions, and feature planning sessions.

Must-Have Qualifications

Nice-to-Have