Responsibilities

📍Lead the design and development of new instant messaging features, ensuring the system can handle high concurrency with strong performance, scalability, and reliability. 📍Build and maintain microservices based on Spring Cloud, including service discovery, configuration management, load balancing, and traffic governance. 📍Work with large-scale data pipelines to analyze and process message data, supporting product decisions and improving system efficiency. 📍Design and optimize storage and retrieval architectures for massive datasets, ensuring stable and efficient data operations. 📍Drive performance tuning, handle production incidents, and lead major refactoring efforts to improve overall system stability and throughput.

Requirements

📍Hands-on experience building or maintaining instant messaging platforms such as WeChat, QQ, Telegram, WhatsApp, Slack, or similar real-time communication systems. 📍Strong proficiency in Java and Spring Boot, with familiarity in distributed systems. 📍Strong knowledge of Linux, microservices, distributed systems, Redis sharding, database sharding, Kafka, and MQ. 📍Proven ability to independently design and deliver a high-performance, high-throughput, and highly available backend system that has been successfully deployed in production. 📍Deep understanding of database storage engines, indexing, partitioning/sharding strategies, and real-world performance tuning practices.

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