Dawit Kassa

I build AI agents and RAG assistants that work on your own documents and tools.

What I deliver:
- RAG assistants that answer from your PDFs, docs or help center, cite the source for every answer, and say "I don't know" when the answer isn't there
- AI agents (LangGraph) that call your APIs and tools, with structured outputs, error handling and human approval where needed
- FastAPI backends with PostgreSQL + pgvector, deployed and documented

Every project ships with a small test set, so you can see how often it answers correctly before you rely on it.

Example: Grounded, a RAG assistant I built, refused 19 of 20 unanswerable questions in a 60-question benchmark test.