I Built a Restaurant POS SaaS in India — Here’s What Nobody Tells You
When I started building RestroQT, I thought I was building a simple restaurant billing system.
I was wrong.
What I ended up building is a full SaaS platform for restaurants and hotels — handling billing, GST, QR ordering, kitchen display systems, UPI payments, and financial reporting.
And along the way, I learned a few things nobody really tells you before building SaaS in this space.
🧠 It’s not a “POS problem”, it’s a “chaos management problem”
Restaurants don’t want software.
They want:
- No billing delays
- No GST mistakes
- No kitchen confusion
- No staff training headache
POS is just the surface. The real problem is operational chaos.
🇮🇳 India makes it harder (and more interesting)
Building for Indian restaurants adds layers:
- GST billing rules everywhere
- UPI payments expected by default
- Internet can be unstable
- Staff often not tech-savvy
- Multi-language UI needs matter
Most global POS systems don’t solve this well.
⚙️ Tech stack I used
RestroQT is built using:
- Backend: FastAPI
- Frontend: React
- Database: MySQL
- Server: Single VPS (yes, one machine)
- Nginx for routing and deployment
For reliability, we use automated database backups with off-server storage and separate secure environments for higher-tier (PRO) clients to ensure data isolation and safety.
I intentionally kept the infrastructure simple at the start using a single VPS to focus on product development and real user feedback.
🧩 Multi-tenant SaaS is harder than it looks
The biggest challenge wasn’t UI or payments.
It was:
- Data isolation between restaurants
- Role-based access (owner, cashier, waiter)
- Real-time updates for orders
- Kitchen display synchronization
One bug in tenant logic = catastrophic data leak risk.
🔥 QR ordering changed everything
One feature changed how users interacted with the system:
👉 QR-based ordering without login
Customers scan → order → pay
No signup friction.
This alone improved adoption significantly.
💡 What I learned building this
- Start simple — complexity comes naturally later
- Real users break your assumptions fast
- Restaurant software is about speed, not features
- UX matters more than backend architecture
- Indian market needs very specific solutions
🚧 What I would do differently
- Build billing engine before adding features
- Focus on one restaurant type first
- Add analytics earlier
- Avoid overengineering backend at start
🌐 Where it is now
RestroQT is currently live and evolving.
It is being shaped based on real restaurant feedback.
Website: https://restroqt.com
🚀 Final thought
Building SaaS is not about writing code.
It’s about surviving real-world complexity long enough until your system becomes stable.
If you're building something similar, I’d love to connect and exchange ideas.
Built by a solo developer trying to simplify restaurant operations in India.