👋 Hyderabad, India
Hi, I'm Dipak Chouhan. I build the backend — then the product on top of it.
Java full stack and AI engineer, eight years in. NRDDA is where the enterprise work meets the shipped work: Spring microservices and GenAI underneath, four web and Android products out in the world.
NRDDA Tech
Smart AI systems, fun mobile apps, and enterprise microservice engines — all shipped and maintained by one person.
Three layers, one person maintaining all of them
Nothing here is résumé decoration — each group is the toolset behind something that's currently running.
Backend & microservices
Domain services, event flow, and the schema discipline that keeps releases boring.
AI, GenAI & mobile
Retrieval and model orchestration on the server, delivered through native Android.
Frontend & DevOps
The surface people actually touch, and the pipeline that gets it there.
Four products, two platforms, all still maintained
Filter by what they do, or search by name and description.
Something broken? It reaches me, not a queue
Common answers first. If yours isn't here, file a ticket below.
How do I report a bug in NEET AI, Detective IRA, or HisaabKiKitaab?
File a ticket with the form below, or email nrdda.owner@gmail.com directly. Include the product name and what you did right before it broke.
Is my data secure in HisaabKiKitaab?
Your ledger is stored on your device first, so the app works with no signal. While you're signed in it also syncs to a private cloud backup under your own account, so a lost phone doesn't mean a lost year of records. Nobody else can read it, it's never sold, and the app has no access to your bank, SMS, or card details — every entry is one you typed. Full detail in the HisaabKiKitaab privacy policy.
Which products run in a browser?
NEET AI runs on the web and on Android. HisaabKiKitaab, Detective IRA, and IRA Ball Sort are Android only.
Tell me what went wrong
Tell me what you're building
Product idea, backend rescue, or an AI feature stuck at the prototype stage — start here.
Let's collaborate
Every message lands in the same inbox I use for support. You'll get a reply from me, not an autoresponder.