QA case study · E-commerce
KFC Pakistan
End-to-end functional and performance testing for a high-traffic ordering platform that supports 100K+ concurrent users.
- Role
- SQA Engineer, Simplex Technology Solutions
- Domain
- Food ordering
- Platforms
- Web, Mobile app
Product overview
A full-scale ordering platform where customers browse menus, customize meals, place delivery or pickup orders, schedule future orders, track deliveries, redeem promotions and earn loyalty rewards on web and mobile app.
My responsibilities
- End-to-end functional testing of ordering journeys on web and mobile app
- Performance testing with Apache JMeter to find backend bottlenecks under load
- Regression testing and QA sign-off for releases
- Defect logging, prioritization, tracking and retesting
Workflows in testing scope
- Menu browsing and categories
- Meal customization
- Delivery and pickup ordering
- Future (scheduled) orders
- Cart and checkout
- Order tracking
- Promotions and deals
- Loyalty program and rewards
Quality challenges
- Keeping a platform with 100K+ concurrent users stable while features kept shipping
- Validating backend behavior under realistic load, not only on the functional happy path
Outcome
- Supported platform stability for 100K+ concurrent users