Engineering7 min readFeb 5, 2026

Building Scalable POS Systems for the Modern Retail Era

Miyad Hasan

Miyad Hasan

Author

Building Scalable POS Systems for the Modern Retail Era

Point-of-sale systems are the heartbeat of retail and restaurant businesses. When your POS goes down, your business stops. That's why building XiomPOS required a fundamentally different approach to reliability and performance.

Architecture Decisions

We chose a hybrid architecture — cloud-first for data synchronization and analytics, but with robust offline capabilities so merchants never lose a sale even when connectivity drops.

Performance at Scale

XiomPOS handles thousands of concurrent transactions across multiple locations. Our event-driven architecture ensures that inventory updates, sales reports, and customer data sync in real time.

The User Experience Challenge

A POS system must be usable by anyone — from a seasoned cashier processing hundreds of orders daily to a new hire on their first shift. We invested heavily in UX research, testing with real merchants in Bangladesh and the UAE.

Key Technical Decisions

Real-time SyncUsing WebSocket connections for instant data propagation across all terminals and locations.
Offline-FirstService workers and local databases ensure zero downtime even without internet.
Multi-Currency SupportEssential for our clients operating across Bangladesh, Saudi Arabia, and Qatar.

Results

XiomPOS now processes over 50,000 transactions daily across our client network, with 99.97% uptime and sub-200ms response times.

EngineeringXiomTechTechnologyDigital
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Mahamudul Hasan Miyad - Founder & CTO of XiomTech Software Development Company

Mahamudul Hasan Miyad

Founder & CTO

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Don't Miss Out - Secure Your Brand's Future Today. Why Risk It With The Wrong Partner? Get 100% Value And Guarantee.
Don't Miss Out - Secure Your Brand's Future Today. Why Risk It With The Wrong Partner? Get 100% Value And Guarantee.
Don't Miss Out - Secure Your Brand's Future Today. Why Risk It With The Wrong Partner? Get 100% Value And Guarantee.

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