Job description for Java development (spot/contract trading order system): 1. Responsible for developing the business requirements of the CEX server spot/contract order system, optimizing and evolving the core technology, and independently leading middle/senior R&D personnel to complete the task of implementing business iteration requirements; 2. Collaborate with the technical leader to continuously optimize and restructure the existing system based on actual requirements; 3. It is necessary to have excellent product sense and collaboration awareness, good development habits, a deep understanding and recognition of development lifecycle management in agile mode, and maintain good practical habits;