Portfolio

SmartQS — Appointment & Token Generation System

A multi-tenant queue platform for clinics, hospitals, and government offices — designed, built, and shipped to production end to end.

Flutter

Next.js

NestJS

PostgreSQL

Redis

WebSocket realtime

AWS

Material 3

Live in production across 6 surfaces generated from a single OpenAPI contract

Offline-first counter & kiosk apps that keep issuing and calling tokens with no connection

Installless visitor status page — scan a QR, track a token, no app download

Realtime WebSocket gateway replacing 10-second polling loops

Multi-tenant platform back office: plans, add-ons, billing, tenant provisioning

Every client below is generated from the same OpenAPI contract and shares one design system — click through to the live apps.

Departments, counters, staff, live SLAs, reports.

Installless QR status page for visitors.

Offline-first staff app: issue, call, serve, skip.

Canvas-rendered always-on display board with TTS.

Cross-tenant plans, add-ons, billing.

Single OpenAPI contract every client is generated from.

The same stack that runs SmartQS in production — available for your queue, booking, or operations project on Freelancer and Upwork.

Offline-first staff & kiosk apps from one codebase — Android, iOS, web, desktop.

Admin consoles, marketing sites, and lightweight public pages that load fast.

Contract-first REST + WebSocket backends on Postgres, with tests that actually run.

Static-site + container deploys with version traceability and rollback prep.