Engineering Blog

Thoughts on Code, Architecture & AI

Deep dives into React.js, AI/ML integration, MERN stack patterns, and lessons from building production applications at scale. Written by Deepak Kumar.

Featured

⚡

React Performance Optimization: 10 Techniques I Use in Production

Practical React performance patterns I've used at India Today Group to optimize rendering, reduce bundle size, and deliver sub-second load times for millions of users.

Mar 1, 2026 10 min read

🤖

Build a RAG App with LangChain, OpenAI & Node.js — Step by Step

How I built a Retrieval-Augmented Generation system at India Today Group for intelligent article search and content automation using LangChain, OpenAI, and MongoDB Atlas Vector Search.

Feb 20, 2026 12 min read

All Articles

⚡

React Performance Optimization: 10 Techniques I Use in Production

Practical React performance patterns I've used at India Today Group to optimize rendering, reduce bundle size, and deliver sub-second load times for millions of users.

React.jsPerformanceJavaScript

Mar 1, 2026 10 min read

🤖

Build a RAG App with LangChain, OpenAI & Node.js — Step by Step

How I built a Retrieval-Augmented Generation system at India Today Group for intelligent article search and content automation using LangChain, OpenAI, and MongoDB Atlas Vector Search.

AI/MLLangChainOpenAI

Feb 20, 2026 12 min read

🧠

Integrating AI into Next.js Apps: OpenAI, Streaming & Edge Functions

A practical guide to adding AI-powered features to Next.js applications using OpenAI API, Vercel AI SDK, streaming responses, and edge functions for low-latency inference.

Next.jsAI/MLOpenAI

Feb 10, 2026 9 min read

🏗️

MERN Stack Architecture in 2026: What's Changed & Best Practices

How I architect MERN stack applications in 2026 — MongoDB Atlas, Express with TypeScript, React Server Components, Node.js 22, and the tools that replaced Redux.

MERNMongoDBReact.js

Jan 28, 2026 11 min read