Strong Python experience (FastAPI, async, tool functions, structured outputs). Experience with LLMs: OpenAI, Claude, Gemini, Groq, ReAct, RAG, transformers. Experience building real agentic workflows. Experience with cloud infrastructure (AWS, GCP, Azure, etc). Vector DB experience (Pinecone, Qdrant, PGVector, Chroma). Comfortable integrating complex APIs, authentication flows, and compliance handling. Strong architectural instincts for secure, multi-tenant SaaS applications. Experience with Postgres, BigQuery, Redis, and message queues.