At Dhan AI, I work at the intersection of AI agent systems and data engineering. Built a multi-agent troubleshooting system using LangGraph to automate network diagnostic workflows. Designed the full evaluation and observability layer using Langfuse, defining quality metrics, tracking failure patterns, and iterating on prompts post-deployment. Migrated a complex ETL pipeline from Python/SQL to distributed PySpark + Apache Hudi platform, cutting end-to-end runtime significantly on daily data refresh.