hang W.
Mid-Level Software Engineer (AI & Backend Development)
Open to offersNew to PlatformAbout
Hang W. is a results-driven Senior Software Engineer with extensive experience at Alibaba Group, specializing in full-stack backend development using Java and Python. He has a proven track record in architecting enterprise-level microservices and deploying cutting-edge AI solutions. At Alibaba, he excelled as the core developer of the FinAI-Copilot, a financial RAG platform, and led the design of a real-time credit risk assessment and fraud detection engine. He demonstrated expertise in high-concurrency systems, distributed architectures, and modern RAG frameworks, ensuring system security by eliminating vulnerabilities and optimizing infrastructure using Docker and Kubernetes. His technical proficiencies include LLM Integration, Asynchronous Programming, and advanced data management with tools such as Milvus and S3. Hang holds a Master of Science in Computer Science from Nanjing University, solidifying his robust engineering skills in the industry.
Experience
Senior Software Engineer / AI & Backend Developer
Alibaba Group · 2023 — PresentArchitected and optimized high-performance backend systems using Java/Spring Cloud and Python/FastAPI, ensuring support for multi-million daily active transactions. Created secure enterprise API interfaces to enhance system security by addressing vulnerabilities such as Broken Object Level Authorization (BOLA/IDOR). Led containerization efforts with Docker/Kubernetes and established remote debugging for application deployments, which enhanced microservice boot-up efficiency.Core Developer & Architect
Alibaba GroupDrove the development of an enterprise-grade financial RAG application aimed at automating market research and investment analysis. Executed asynchronous text-chunking and embedding pipelines with Python Asyncio and LangChain, indexing a vast amount of financial regulations into Milvus. Enhanced vector search precision through hybrid retrieval techniques, significantly improving response latency.Lead Backend Engineer
Alibaba GroupConceived a hybrid Java/Python real-time credit scoring engine for analyzing diverse data points in merchant lending. Built a robust Java microservices layer with Spring Boot and Kafka to process transaction streams in real time. Developed analytical pipelines in Python to implement complex predictive algorithms, adjusting risk profiles through caching with Redis. Refined legacy REST endpoints into secure internal RPC interfaces to better manage data exposure.
Skills & Expertise
Education
- Master of Science (M.S.) in Computer Science and TechnologyNanjing University · 2021 — 2023
- Bachelor of Science (B.S.) in Computer Science and TechnologyNanjing University · 2017 — 2021