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  • Walmart Global Tech
  • San Francisco Bay Area

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qicesun/README.md

Hi, I'm Qice Sun

GenAI Software Engineer @ Walmart Global Tech Specializing in building Production-Grade LLM Applications, Multimodal RAG, and Agentic Workflows. I bridge the gap between Enterprise Java infrastructure and modern Python AI capabilities.

qicesun0401@gmail.com


🚀 Open Source Leadership (Langchain4j)

Driving the Enterprise Java AI ecosystem by implementing critical integrations and standards.

  • Model Context Protocol (MCP) Lead:

    • Architected and delivered the Java MCP Server implementation (Protocol in Core / Implementation in Community).
    • Enabling Java apps to natively expose tools/resources to AI clients like Claude Desktop.
  • Enterprise Tooling & RAG:

    • Jira & Web Scraper Tools: Engineered self-healing Agent tools with token-optimized parsers (ADF/HTML $\to$ Markdown) and Real-LLM E2E testing pipelines.
    • Knowledge Loaders: Built resilient Document Loaders for Confluence and GitLab, bridging the gap between proprietary enterprise data and LLMs.

🛠️ Technical Stack

Domain Technologies
Generative AI LangGraph, LlamaIndex, vLLM, RAGAS, Prompt Engineering
Vector Search Milvus, FAISS, Neo4j GraphRAG, Hybrid Search (Dense + Sparse), Reranking
Backend & Infra Java (Spring Boot), Python, Kafka, Redis, Docker, Azure AKS
Observability Prometheus, Grafana, OpenTelemetry

Pinned Loading

  1. langchain4j/langchain4j-community langchain4j/langchain4j-community Public

    LangChain4j integrations that are maintained by the community

    Java 157 86

  2. SRE-Agent-App SRE-Agent-App Public

    An Autonomous AI SRE Agent for Kubernetes, built with Java Spring Boot & LangChain4j. Implements OODA loop for self-healing.

    Java 63