Forum for Dental Assistants and Dentists B2B platform for dentistry

The professional dental market lived in scattered chats and classifieds: job

openings, urgent shifts, office and equipment rental, instrument sales — each in a

different channel, with no structure, no trust, and no built-in communication or

payments. The client needed a single B2B space where specialists and clinics could

post and discover several types of offers, talk in real time, and monetize through

subscriptions — all running as a fast PWA on any device, with a manageable backend

and proper moderation tools.

We designed and built DentaHub as three coordinated applications: an async FastAPI

backend (PostgreSQL/SQLAlchemy), a Flutter client (web/PWA, installable on the

device), and a React + Vite + TypeScript admin panel for moderating users, groups,

chats and ads.

Highlights:

• A marketplace of five ad types (vacancies, job seekers, urgent shifts, office and

equipment rental, instrument sales) with responses.

• Real-time chat over WebSocket: groups, topics and direct messages, live unread

badges and auto-ordering, web push (VAPID), read receipts.

• Premium subscriptions with online payments and paid ad publication.

• Phone-number authentication via SMS-OTP.

• Built-in observability: three-class outage attribution (server / app / client),

health probes and durable uptime logging.

• Production deployment via Docker Compose and Nginx (same-origin proxy), with safe,

non-destructive migrations.

A production platform live at фас.online: one PWA plus a native admin panel instead

of scattered channels. Real-time communication, a structured multi-type marketplace,

and a working "subscription → payment" loop. The backend is covered by 56+ automated

tests; monitoring pinpoints whether an outage is on the server, app, or network side;

updates ship through safe, non-destructive migrations.