Senior Erlang Developer

7 days ago

Gurugram, India Hawk Ecommerce Full time

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. Youll 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 : - 5+ years of production experience with Erlang/OTP, ideally in real-time systems.- Solid understanding of distributed systems, event-driven architecture, and concurrent programming.- Experience working with messaging protocols (e.g., XMPP, MQTT, WebSockets).- Familiarity with Mnesia, Riak, or similar distributed databases.- Proficiency in building and scaling systems that handle millions of concurrent users.- Knowledge of fault tolerance, hot code swapping, and system uptime strategies.- Strong understanding of networking, sockets, and asynchronous I/O.- Experience with monitoring tools (e.g., Grafana, Prometheus) and log aggregation.Nice-to-Have :- Experience with push notification systems (APNs, FCM, etc.).- Exposure to end-to-end encryption, cryptographic protocols, and secure messaging architectures.- Familiarity with Elixir or willingness to work in an Erlang/Elixir hybrid environment.- Understanding of containerized deployments (Docker, Kubernetes).- Contributions to open-source Erlang projects or messaging libraries. (ref:hirist.tech)

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