STORY · PROBLEM → SYSTEM → CHALLENGE → SOLUTION → RESULT
- PROBLEM
A business client needed workforce management, service operations and CRM in one system, with GPS live tracking and attendance for people working in the field.
SOURCE · RESUME
- SYSTEM
A Python / FastAPI backend on PostgreSQL, a Flutter mobile app and a React web client. MongoDB holds the GPS tracking data.
SOURCE · RESUME
- CHALLENGE
Field GPS is messy: apps get backgrounded, connectivity drops, and a continuous stream has to become meaningful routes and attendance.
EXPLANATORY
- SOLUTION
GPS live tracking, attendance management, CRM and service-operations modules, with route segmentation covered by automated tests.
SOURCE · RESUME
- RESULT
Documented: 247+ field employees on GPS tracking and attendance, and 178+ automated tests (13 route-segmentation unit tests + 165 regression tests).
SOURCE · OWNER
THE SYSTEM · AS BUILT
The admin app covers workforce management, service operations and CRM, with GPS live tracking and attendance. These are the real screens.
ENGINEERING
Location capture that has to keep working when the app is not in the foreground.
SOURCE · OWNER
JWT sessions across the mobile and web clients: issue, refresh and expiry.
SOURCE · OWNER
Points recorded without connectivity are held locally and synced when the connection returns.
SOURCE · OWNER
Turning a continuous GPS stream into travel, stop and deviation segments. 13 unit tests cover it.
SOURCE · OWNER
Storing frequent GPS writes from the field workforce.
SOURCE · OWNER
Attendance driven by entering and leaving defined zones.
SOURCE · OWNER
ENGINEERING LAB · OFFLINE GPS QUEUE
ENGINEERING LAB · ROUTE SEGMENTATION
ARCHITECTURE
LIVE SYSTEM / PUBLIC WEB EXPERIENCE
YAMINI INFOTECH — PUBLIC WEB EXPERIENCE
The real public website at yaminicopier.com, loaded from its own address. It is the company's public web presence, separate from the engineering case study above, and you can scroll and use it directly.
LIVE WEBSITE PREVIEWDOCUMENTED RESULT
● PRODUCTION / LIVE
- FIELD EMPLOYEES
- 247 plus
GPS TRACKING AND ATTENDANCE
- AUTOMATED TESTS
- 178 plus
13 ROUTE-SEGMENTATION UNIT TESTS + 165 REGRESSION TESTS



