Harmehak Singh Khangura

Database design, API contracts, authentication and access patterns, hosting and deployment tradeoff evaluation, multi tenant architecture with schema level isolation, Structured output validation, fallback chains and graceful degradation, multi model architectures, circuit breaker patterns for external APIs, custom evaluators, LLM as a judge validation, hallucination detection and quality gates before user exposure, Python (primary across services, agents, and pipelines), SQL; FastAPI, REST API design, asynchronous, Python, event driven patterns; PostgreSQL schema design, indexing, query optimization; pgvector, FAISS, BigQuery, ETL pipeline design, Anthropic Claude API and SDK, OpenAI, Google Gemini, Model Context Protocol including MCP server development, retrieval augmented generation grounded in governed content with citation surfaces; Claude Code and Cursor, LangChain, LangGraph