1，Participate in the requirement analysis, system design, coding implementation and related documents writing of software projects. 2，Responsible for the development of Java and related technologies in the project, complete the design, coding, testing and performance optimisation of system functions. 3, according to the development progress and task allocation, complete the design, development and testing of the corresponding module software on time. 4，Responsible for performance analysis and optimisation of Java applications, and solving technical problems encountered in the development process. 5, learn and research new technologies and apply them to practical work to improve the quality and efficiency of software development. 6，Communicate actively with project team members and collaborate to complete project tasks.

1, Java basics: Java engineers need to be proficient in the fundamentals of the Java language, including data types, operators, flow control, arrays and so on. 2, object-oriented programming ideas: Java is an object-oriented programming language, Java engineers need to understand object-oriented concepts, such as classes, objects, inheritance, polymorphism and so on. 3, commonly used Java framework: Java engineers need to be familiar with commonly used Java frameworks, such as Spring, Hibernate, MyBatis, etc., and be able to flexibly use these frameworks for development. 4, database knowledge: Java engineers need to be familiar with the design and use of relational databases, proficiency in SQL syntax, and the ability to flexibly use MySQL, Oracle and other databases. 5, Web development technology: Java engineers need to be familiar with Web development-related technologies, including HTML, CSS, JavaScript, JQuery, AJAX and other front-end technologies, as well as Servlet, JSP, ASP and other back-end technologies. 6, system design capabilities: Java engineers need to have the ability to system design, able to design a reasonable system architecture based on demand. 7, technology accumulation and learning ability: Java engineers need to constantly learn new technologies, understand the latest technology trends, in order to adapt to the changing technical environment and business needs. 8, good communication skills and teamwork spirit: Java engineers need to collaborate with other team members to complete the project, so they need to have good communication skills and teamwork spirit. 9, problem-solving skills: in the software development process, Java engineers need to have the ability to solve problems, can quickly locate and solve a variety of technical problems. 10, familiar with the Linux operating system and commonly used development tools: Java engineers need to be familiar with the Linux operating system and commonly used development tools, such as Git, Maven and so on.