Senior Java Engineer (CEX experience) - Mandarin Speaking

<p>Responsibilities:</p> <ul> <li>Participate in the development of backend systems for the company’s centralized exchange (CEX), providing technical support for core business operations.</li> <li>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.</li> <li>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.</li> <li>Lead research and resolution of critical technical challenges, ensuring stability of the core systems.</li> <li>Participate in core architecture implementation, write high-quality code, train and guide developers, and help standardize engineering processes.</li> <li>Lead the design, development, and innovation of real-time computing systems.</li> <li>Drive the architectural evolution of the trading matching engine (handling tens of millions to hundreds of millions of daily requests).</li> <li>Lead the development of rule engines, variable platforms, and other mid-platform (middleware) systems.</li> </ul> <p>Requirements:</p> <ul> <li>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.</li> <li>Experience in developing and optimizing large-scale data aggregation, query, and computation systems.</li> <li>Experience with large-scale system refactoring; hands-on exposure to DDD, middleware platforms, and CI/CD is a strong plus.</li> <li>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.</li> <li>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.</li> <li>Experience building or promoting core frameworks in large-scale companies is preferred.</li> <li>Familiar with common networking issues and capable of effective troubleshooting.</li> <li>CEX experience is mandatory.</li> </ul>