Task & Responsibilities： a) Project software development according to the door functional/diagnostic requirement, b) Set up test condition, and test software on simulation rack, mockup. d) Perform the bus comunication test and train test on customer side. c) Documents development for software development and test. e) Technical support for after sales department, quality department, and dcustomer. Required 1. Good C/C++ software code development and debugging capabilities. 2. Knowedge of software white-box test and black-box test. 3. Good English reading, writing, listening and speaking skills. 4. Good communication, presentation, organization and coordination skills.