Note: Mandarin and English speaking is mandatory for this position. Duties and responsibilities i) Pre-sales technical support Communicate with customers on product and technology, improve Customer satisfaction. Collect and summarize overseas customers' feedback on demand, consultation, complaints, delivery and other product and technology-related issues. Provide timely, correct and complete feedback to R&D. Track the resolution process and delivery results until the customer confirms the closure of the problem. Participate in sales business such as RFI, RFP, RFQ and other bidding work, assist the business to identify demand, determine the bidding model and program. Cooperate with sales business to collect competitive information and test dynamic tracking and feedback. Assist overseas customers to carry out technical training, new product promotion and demonstration, program design and other technical exchanges. ii) Test work Cooperate with R&D to conduct software and hardware testing overseas and provide timely and accurate feedback on test results. iii) After-sales work Collect and summarize product and technology related issues such as demand, consultation and complaint from overseas customers in the after-sales stage, and feedback the demand/consultation/complaint to the Employer internally in a timely, correct and complete manner, and track the resolution process and delivery results until the customer confirms the closure of the issue. Overseas product site maintenance, project installation work. iv) Other work: Other related work tasks arranged by the Employer. Job Requirements : Bachelor's degree or higher in Computer Science, Communication Engineering, Electronic Information Engineering, or a related field; solid understanding of the fundamental principles of communication industry products. At least 5 years of relevant work experience and product knowledge in ICT products. Experience in implementing and managing conventional communication systems. Familiarity with the technical support and principles of the company's products. Ability to summarize and document technical information effectively. Fluent in both written and spoken English and Chinese, Chinese are preferred. Strong team communication and coordination skills, with the ability to handle emergencies effectively. Willingness and ability to travel independently for a long time globally (primarily to regions such as Asia-Pacific, Europe, Latin America, the Middle East, and Africa).