Job Description: Responsible for core development of the platform business system and leading its implementation. Conduct in-depth analysis of business requirements and formulate technical solutions/system designs. Develop distributed middleware products and lead the design of microservices, API gateways, etc. Write core system code and resolve complex technical challenges. Translate technical requirements into robust solutions considering performance, stability, and scalability. Requirements Qualifications: Bachelor Degree in Computer Science or related discipline Solid Java fundamentals with understanding of I/O, multithreading, collections, and JVM principles. Proficient in OOP. 3+ years experience in Core Java, Spring Cloud, microservices, multithreading, and high-performance server design/optimization. Hands-on experience with Redis, Cassandra, HBase, or other mainstream NoSQL databases. Proficient in Linux environment with containerization experience (Kubernetes/K8S preferred). Familiar with common I/O models. Experience in large-scale network programming is a plus. Skilled in MySQL development, database design, and performance optimization. Experienced in distributed systems. Proficient in agile development methodologies. Strong communication skills, teamwork spirit, and self-motivated learning attitude. Experience in e-commerce platforms (transaction, product, marketing, membership, payment, fulfillment systems) preferred. Candidates with data computing capabilities or algorithm experience will be prioritized. Fluent in English and Chinese