01
Device-aware checkout
Application state had to remain synchronized with barcode scanners, security scales, checkout services, customer actions, and asynchronous hardware events.
All projects
Self-checkout / RetailIDOL Group of Technologies LLC
Genius SCO C4
Enterprise self-checkout product engineering for Carrefour retail environments, combining Flutter kiosk workflows, retail-device integration, MQTT communication, security-scale verification, AI camera-assisted item review, and staff intervention flows.
My role
Senior Integration Engineer — Flutter/Dart Focus
- Flutter
- Dart
- MQTT
- gRPC
- Security Scale
- Hardware Integration
- Company / client
- IDOL Group of Technologies LLC
- Role
- Senior Integration Engineer — Flutter/Dart Focus
- Domain
- Self-checkout / Retail
- Case-study focus
- Architecture · integration · product behavior
Engineering view
What made this an engineering problem—not just a UI task
02
AI-assisted item review
Camera-assisted exception detection could trigger a customer-friendly review state while staff received the operational context needed to verify the event and safely resume checkout.
03
Security-scale verification
Bagging-area and weight-verification flows added another physical validation layer around scanned items and transaction state.
04
Staff intervention
Shopper-assistant workflows gave staff controlled tools to inspect line items, resolve exceptions, assist customers, and continue or correct the transaction.
05
Integration & diagnostics
Operational screens exposed connection health, MQTT and gRPC configuration, scanner and scale readiness, and diagnostic tooling needed in a hardware-connected retail environment.
Contribution
Selected engineering highlights
- 01
Developed and debugged self-checkout workflows connected to real retail hardware, scanner states, transaction state, and asynchronous device events.
- 02
Worked on security-scale verification and exception-handling flows where software needed to coordinate item scans, bagging-area behavior, and physical checkout devices.
- 03
Contributed to AI camera-assisted item-review workflows that pause the checkout when unusual item movement requires staff verification before the transaction continues.
- 04
Built shopper-assistant and operational tooling for reviewing transaction items, resolving exceptions, supporting customers, and restoring the checkout flow safely.
- 05
Used MQTT and service communication across Flutter, POS, device, and hardware-integration layers.
Product visuals
Screens and workflows
Screens are shown at their native proportions without cropping. Landscape product views use the full content width; portrait kiosk and mobile views pair naturally when space allows.
Full image Genius SCO C4 customer self-checkout scanning workflow
Full image Customer-facing item review workflow triggered by AI camera-assisted checkout monitoring
Full image Staff-facing AI camera item review and verification workflow
Full image Genius SCO C4 shopper assistant transaction-management workflow
Full image Genius SCO C4 product lookup and manual barcode-entry workflow
Full image Genius SCO C4 device integration and diagnostics configuration