[Responsibilities] Develop and maintain backend applications using Java (Spring Boot, Hibernate). Integrate systems with databases (MySQL, PostgreSQL, MongoDB.) and external services. Participate in requirements analysis, propose technical solutions, and optimize system performance. [Requirements] Experience in system design and solution architecture in Fintech, Securities Core Systems,... University Degree in Information Technology, Computer Science, or a related field. 4 years of experience in Java development. Experience in Web3 or Blockchain Experience with Java, Java Spring Boot, and JPA. Experience with message broker systems such as RocketMQ, Socket io. Experience with databases including MongoDB, PostgreSQL, MySQL and Redis. Knowledge of managing configurations using Nacos is a plus. Knowledge of Seata and Sentinel is a plus. Preferred candidates have experience with blockchain technologies, startups, or fast-paced tech environments. Good English communication ability.