William Jiang

Architected and shipped full-stack enterprise applications (React/TypeScript + Python FastAPI) with production RAG pipelines integrating open-source LLMs over structured and unstructured enterprise data, including agentic-in-voice, agentic-documents, and auto match & bidder features. Designed agentic AI systems integrating OpenAI, Claude, LangChain, LlamaIndex, RAG/LLM-Wiki, and memory-aware workflows for document intelligence. Delivered cloud integration and service using Docker, Kubernetes, and AWS, building scalable backend services for conversational AI, document processing, session management, and AI workflow orchestration. Evaluated and selected LLM providers based on latency, cost, and enterprise security, and mentored engineers on scalable AI-driven Node.js and Python patterns.

Founded and scaled a consulting firm delivering Node.js- and AI-driven digital solutions for enterprise clients. Built and deployed AI-driven web automation tools and intelligent backend services for clients across industries. Designed and implemented microservices and API-first systems with Node.js, Express, and PostgreSQL. Built cloud-native applications using Docker, Kubernetes, and AWS. Delivered proof-of-concept demos and production-grade systems for digital transformation. Mentored junior engineers, introduced best practices for scalable Node.js development.

Founded Best IT Consulting Inc. and delivered AI-driven software solutions. Designed and implemented AI/LLM applications using LangChain, LlamaIndex, and Hugging Face with custom integrations; built workflow automation and AI pipelines using tools such as Claude Code, GitHub Copilot, and Claude for rapid prototyping and production deployment.