Connected Claude Code to a third-party MCP server so the agent could control a live browser — a capability it did not have on its own. Built three automation scripts over that connection, each with a typed input and output contract. Traced a production regression where all three previously validated scripts failed together: the platform’s cold environment opened at an inconsistent window size and silently broke a shared downstream dependency. Diagnosed it from run traces, fixed it, and re-validated from a fresh cold start rather than a warm session. Wrote structured platform feedback with reproduction steps, root cause, severity, and a suggested fix.

Production-grade RAG system that lets users upload any PDF and ask questions in plain English — every answer comes with an exact page citation and zero hallucination. Built with hybrid BM25 + vector retrieval, Cohere cross-encoder reranking, and a Ragas evaluation pipeline CI-gated in GitHub Actions. Faithfulness improved from 0.61 to 0.89 after reranking. Multi-user architecture with NextAuth Google and X OAuth. Phase 2 adds fully local inference via Ollama with zero data egress.

Multi-user collaborative coding platform with real-time synchronisation under 100ms via WebSockets (Socket.IO). Features live cursor tracking, secure room management, and syntax highlighting — built for remote pair programming and team coding sessions. Event-driven scalable architecture using React, Node.js, MongoDB and Tailwind CSS.

LLM-powered search engine with real-time data retrieval and streaming responses via OpenAI and Anthropic APIs. Delivers concise semantic results beyond keyword matching, with advanced cache optimisation achieving a 95% cache hit rate, serverless deployment on AWS Lambda, and optimised PostgreSQL queries reducing latency by 60%.

Subscription-based website monitoring platform with real-time uptime pings, automated downtime email alerts via NodeMailer, performance metrics dashboards, and tiered subscription plans. Built with Node.js, TypeScript, Bull Queue for distributed async job processing, PostgreSQL and Prisma ORM — deployed on AWS EC2 with GitHub Actions CI/CD and 99.9% uptime.