I’m Wang Xin, a senior AI/ML and software engineer with 8+ years of experience building production-ready machine learning and GenAI systems, from model training and evaluation to deployment and monitoring. My focus spans LLM applications, RAG, multilingual NLP (English/Chinese), and intelligent backend services that turn real requirements into reliable AI features. I enjoy designing end-to-end AI pipelines—document ingestion, context assembly, semantic search and reranking, and structured output generation—while continuously improving accuracy, latency, and reliability. I’ve delivered AI solutions across healthcare-related products, cloud environments (AWS/Azure/GCP), and modern MLOps practices (Docker/Kubernetes, CI/CD), always with an emphasis on correctness, hallucination risk, and operational performance.…I’m Wang Xin, a senior AI/ML and software engineer with 8+ years of experience building production-ready machine learning and GenAI systems, from model training and evaluation to deployment and monitoring. My focus spans LLM applications, RAG, multilingual NLP (English/Chinese), and intelligent backend services that turn real requirements into reliable AI features. I enjoy designing end-to-end AI pipelines—document ingestion, context assembly, semantic search and reranking, and structured output generation—while continuously improving accuracy, latency, and reliability. I’ve delivered AI solutions across healthcare-related products, cloud environments (AWS/Azure/GCP), and modern MLOps practices (Docker/Kubernetes, CI/CD), always with an emphasis on correctness, hallucination risk, and operational performance.WWWW…