Pankaj K.

Senior Data & AI Engineer | BigQuery, dbt, RAG, LangGraph, n8n

I build production-ready Data & AI systems; from data pipelines and analytics workflows to RAG, AI agents, and business automation. I help companies turn raw data, manual processes, and AI ideas into reliable systems that can be deployed and used in production. My work covers the complete lifecycle: data ingestion → transformation → analytics → AI/agents → APIs → automation → cloud deployment. Data Engineering & Analytics • ETL/ELT pipelines and data ingestion • Python and SQL data processing • BigQuery, GCP, PostgreSQL, Supabase • Data cleaning, transformation, and modeling • Data warehousing and analytics-ready datasets • Analytics engineering workflows • AI/RAG data ingestion pipelines Agentic AI & RAG • Production AI agents and multi-step workflows • RAG applications, AI assistants, and chatbots • LangGraph, LangChain, CrewAI, LlamaIndex • OpenAI, Claude AI, Claude Agent SDK • Pinecone, Qdrant, pgvector • AI evaluation, guardrails, and human-in-the-loop systems AI Automation & Integrations • n8n, Make, Zapier, Flowise • AI voice and chat automation • REST APIs, webhooks, and third-party integrations • CRM, lead management, appointment, and follow-up automation • Automated business workflows and internal tools Backend, Cloud & Product Delivery • Python, FastAPI, Django, Flask • REST APIs and production backend systems • React and Next.js • Docker and cloud deployment on GCP/AWS Recent production experience includes building AI calling and follow-up automation for a US law firm using Retell AI, n8n, Twilio, webhooks, CRM workflows, and appointment scheduling. I focus on understanding the business problem first, then designing the right architecture and building a reliable solution that delivers measurable value.