Reducing transaction time and errors across restaurants and retail systems
Role: UX/UI Designer (Web & Mobile)
Timeline: 2024 – 2025
Team: CTO, FE, BE, App Dev, QA
Overview
OMPOS is a SaaS-based POS and business management system designed for restaurants and retail operations.
Target audience
- Cashiers
- Restaurant staff
- Store managers
- Business owners
Client
Restaurants and retail businesses using OMPOS for daily sales and operations.
The system supports order management, inventory tracking, payments, and real-time operations across web, mobile, and POS devices.
I. Problem
User
- Creating and modifying orders
- Managing tables (merge, split, move)
- Processing payments and refunds
- Scanning products and printing receipts
Business
- Inefficient operations during peak hours
- Increased training time for new staff
- Higher error rates in orders and transactions
🎯 Core challenge
How might we design a POS system that is fast, intuitive, and reliable in real-world, high-pressure environments?
II. Approach
Real-world observation
- Observed real workflows in restaurants and retail stores
- Identified bottlenecks in order-taking and payment flows
- Noted frequent errors caused by unclear UI and complex interactions
Key insight
In POS systems, speed and clarity are more critical than flexibility.
Product strategy
- Minimize the number of steps for critical actions
- Design for fast recognition instead of recall
- Optimize for touch interactions on tablet devices
- Ensure consistency across different business types
III. Solution
1
Optimized order & payment flows
- Reduced steps in order creation and checkout
- Designed quick actions for: Add/remove items; Apply discounts; Process payments.
👉 Faster transactions with fewer errors
2
Advanced table management (restaurant use case)
- Merge tables
- Split bills
- Move orders between tables
👉 Reduced complexity in high-volume restaurant environments
3
Retail POS optimization
- Integrated barcode scanning for fast product input
- Simplified inventory and product lookup
- Designed clear receipt and billing flows
👉 Improved speed and accuracy for retail operations
4
Hardware-integrated experience
- Receipt printers
- Card payment devices (POS terminals)
- Barcode scanners
👉 Bridged the gap between digital interface and physical operations
5
Cross-platform system design
- Tablet POS (primary interaction)
- Mobile app (monitoring & quick actions)
- Web dashboard (management & reporting)
👉 Ensured consistent experience across all touchpoints
6
Continuous testing & iteration
- Worked closely with developers and QA to test real scenarios
- Iterated on flows to reduce friction and improve clarity
- Refined dashboard and data presentation over time
Business impact
40%
Reduced sales operation time
Product impact
2x
Faster transaction flows and reduced interaction steps
User impact
Zero
Staff can operate quickly with minimal training
