About
We build software — and then we run it
Our own products are live and used every day, so we build for clients the way we build for ourselves: to be used, maintained and grown, not just handed over.
CoreStack Technology is based in New Delhi, Delhi. We build software for businesses whose most important records are still on paper — and there are more of them than the software industry likes to admit.
A hill shopkeeper's stock book. The muster roll at a construction site's gate. A payroll sheet passed around every month end. An industrial supplier's emailed price list. Each of those is a working system that people trust, and each is a system that cannot be searched, totalled, audited or backed up.
Our products start by taking that document seriously. Before designing a screen we find the record the business already relies on and work out what it has to keep doing. Software that produces a worse certificate than the spreadsheet it replaced will not be used, however good the dashboard is.
We work with businesses in India and abroad — invoicing in INR or USD, with calls in your working hours and progress you can open on a link every week.
CoreStack Technology builds and runs Basket of Pahad, the marketplace for authentic products from India's hills and Himalayas — live in Kumaon, Uttarakhand and now opening across the hill states — alongside CoreStack People, SitePulse and Joshi Induscorp.
Running our own products keeps that honest. Basket of Pahad takes real orders from family shops in the hills, and a bug there is not a ticket — it is a seller who did not get paid.
- 4
- Live products
- 48 h
- Free design
- 1
- Shared stack
- New Delhi
- Based in
Built and run by CoreStack
Basket of PahadAuthentic Products from India's Hills and HimalayasLive in Kumaon, Uttarakhand — now opening across India's hills and Himalayas.
Who you will be working with
I started CoreStack to build the software small and mid-sized businesses actually run on — not slide decks about it.
Every product on this site was designed, built and is operated by us. When you work with CoreStack you talk to the people writing your code, from the first call to the day it goes live and after.
Krishna Joshi
Founder, CoreStack Technology
The stack
What every product is built on
Spring Boot on Java 21
Every backend. One set of conventions, one way to test.
PostgreSQL with Flyway
Schema as versioned migrations — the database is never edited by hand.
React 19 and Vite
Every frontend, built the same way, deployed the same way.
Stateless JWT auth
The same security model across products, audited once.
Tenant isolation where it matters
Where a product serves many companies, each one's data is kept apart by design, not bolted on later.
Payments where money moves
Razorpay, in the products that take money — one integration, built once.
How we work
Four rules we actually follow
The paper record comes first
Before any screen is designed we find the document the business already trusts — the muster roll, the SRF, the certificate — and make the software produce something at least as good.
Own the product, not just the build
We run what we build. Basket of Pahad takes real orders from family shops in the hills, which is a different discipline from shipping a project and walking away.
One stack, deliberately
Every product on the same foundation means a fix in one is a fix in all, and an engineer who knows one knows the others.
Compliance is a feature
NABL, ISO/IEC 17025, GST, FSSAI — where an industry has rules, the software should make following them the easy path.
See what we build or get in touch.
Tell us what you need
Two lines are enough. We reply with an honest range and next steps — and a free design if you want one.
We reply within one working day