Rahul Karna

I've built a full-stack observability platform at T.E.J Center that collects, processes, and visualizes client metrics. I designed its Node.js and Express backend, created event-tracking APIs, and packaged ingestion and batching logic into a lightweight client utility that reduced integration time from days to minutes.

I containerized core microservices with Docker to support rapid horizontal scaling and high availability under fluctuating traffic. Previously, as a Software Engineering Fellow at T.E.J Center, I developed MERN applications with JWT authentication, dashboards, CRUD workflows, real-time updates, Redux state management, and responsive interfaces.

I'm particularly interested in practical AI systems: I architected a Node.js RAG pipeline using the Gemini API and built a Foodmandu support agent with Pinecone, MCP tools, hybrid retrieval, bilingual detection, and ticket escalation.

My projects also include a pull-model newsfeed using Redis, Kafka, and PostgreSQL, plus a URL shortener with rate limiting and click analytics. I work across JavaScript, TypeScript, Python, React, Node.js, Express, MongoDB, PostgreSQL, Redis, Docker, Grafana, and Prometheus.