Senior Java Engineer (CEX experience) - Mandarin Speaking

Responsibilities

Participate in the development of backend systems for the company’s centralized exchange (CEX), providing technical support for core business operations. Design architectures for complex future payment-related systems; demonstrate strong capabilities in designing large-scale distributed systems while ensuring high-quality architecture that balances development, operational, maintenance, and reliability costs. Contribute to solution design and technical reviews for key engineering projects; conduct quality assessments, identify issues during system iteration, and help enhance team efficiency and development quality. Lead research and resolution of critical technical challenges, ensuring stability of the core systems. Participate in core architecture implementation, write high-quality code, train and guide developers, and help standardize engineering processes. Lead the design, development, and innovation of real-time computing systems. Drive the architectural evolution of the trading matching engine (handling tens of millions to hundreds of millions of daily requests). Lead the development of rule engines, variable platforms, and other mid-platform (middleware) systems.

Requirements

Bachelor’s degree in Computer Science or related field; expert-level proficiency in Java and its ecosystem, with 8+ years of hands-on development experience. Experience in developing and optimizing large-scale data aggregation, query, and computation systems. Experience with large-scale system refactoring; hands-on exposure to DDD, middleware platforms, and CI/CD is a strong plus. Deep understanding of Java-related frameworks such as Spring Cloud Alibaba, MyBatis—their design principles and internal mechanisms; strong knowledge of transactions and distributed transactions. Proficient in Redis and at least one MQ technology such as RabbitMQ or RocketMQ; familiarity with middleware such as SkyWalking, CAT, and scheduling/orchestration systems. Experience building or promoting core frameworks in large-scale companies is preferred. Familiar with common networking issues and capable of effective troubleshooting. CEX experience is mandatory.