03 / 06—Commerce & Retail—2019
klikx
An NF525-certified POS solution with box-to-server sync and full ELK monitoring.
OVERVIEW
klikx is a point-of-sale system certified to the French NF525 fiscal standard, with resilient sync between in-store boxes and the central server even under flaky connectivity.
I built the backend sync engine and the observability stack that keeps every transaction auditable.
WHAT I BUILT
- Built NodeJS sync engine for box↔server.
- Implemented NF525-compliant fiscal logging.
- Stood up ELK monitoring across the fleet.
- Wrote Python tooling for data reconciliation.