Dhruv Rai P.

I build production-ready SaaS backends and the AI agents that run on them. 22+ years in software (12 enterprise, 10+ freelancing), Top Rated Plus, 100% Job Success. Clients hire me when they need something built right: a multi-tenant SaaS, an API that can't break, or an AI agent that has to work in production, not just in a demo. AI & Agents • AI agents and workflows: LangChain.js / LangGraph, Google ADK, tool-calling • RAG / chat over your data, LLM features added to existing apps • OpenAI, Gemini and Claude APIs; MCP integrations Full-Stack & Cloud • Backend architecture: Node.js, TypeScript, Nest.js, event-driven systems • Firebase and GCP: Cloud Run, Cloud Functions, Firestore, BigQuery • Frontends: Angular, React / Next.js • Database design, SQL and NoSQL Why both matter: most AI projects fail on the backend basics, like reliability, cost control, auth and data design. That's where I've spent two decades. I use AI-assisted development (Claude Code) to deliver faster, with every line reviewed by me. Selected work: OpusWatch (Netherlands): Built the entire backend architecture (Node/Firebase) and Admin Dashboard (Angular) for a complex watch tracking platform. StrikePay (Ireland): Designed key backend functionality for payments and identity verification (ID-Pal integration). Numnu (Canada): Architected a food aggregator app using GCP, handling real-time data and analytics.