Harsha Hapuarachchi

AI RAG & Java Integration Specialist

I help businesses transform their documentation into intelligent AI assistants using Retrieval-Augmented Generation (RAG).

With 14 years of experience as a Senior Full-Stack Engineer, I build scalable, production-ready solutions that combine modern AI with enterprise-grade software engineering. My expertise spans Java, Spring Boot, Kotlin, Angular, Python, OpenAI, Elasticsearch, and Docker, enabling me to deliver reliable AI applications that integrate seamlessly with existing systems.

What I can deliver

✅ AI-powered Knowledge Assistants for company documentation

✅ Chat with PDFs, Word documents, and internal knowledge bases

✅ Enterprise RAG applications with source citations

✅ Hybrid Search (Keyword + Semantic Search)

✅ OpenAI & Spring AI integration

✅ AI integration into existing Java/Spring Boot applications

✅ REST APIs and Dockerized deployments