Project overview
Intended market
Hospitality and customer-service operations that combine lounge, restaurant, bar and salon services, with distinct customer, waiter, preparation-station and administrative workflows.
Engineering responsibility
Multi-application architecture, customer PWA, staff POS, administrative dashboard, API design, relational data modelling, QR workflows, real-time operational events, inventory/order/receipt workflows and deployment engineering.
Problem or opportunity
A multi-service hospitality venue needs customer ordering, staff execution, preparation stations, stock control, receipts, appointments and management reporting to operate as one coordinated system rather than disconnected manual processes.
Objectives
- Provide QR-based customer access to menus and ordering
- Give waiters and preparation staff dedicated operational interfaces
- Synchronize order state across customer, POS, kitchen/bar and admin experiences
- Centralize menu, table, inventory, staff and appointment administration
- Track stock movements and connect menu consumption to inventory
- Generate and deliver digital receipts
- Support management analytics and operational oversight
Challenges and constraints
- Multiple user roles need different interfaces while sharing the same operational state
- Restaurant, lounge, bar and salon workflows must coexist within one data model
- Order progress must propagate quickly across customer, waiter and preparation views
- Inventory movements need traceability from purchase through usage, waste, adjustment and return
- QR sessions must reliably associate customers with the correct table or area
Engineering approach
Premium Space uses a monorepo that separates customer, staff and administrative frontends from a dedicated API service. The backend models venue sections, tables, QR tokens, waiter assignments, menu variants/modifiers, inventory transactions, orders, preparation tickets, payments, receipts, staff roles and salon appointments. Socket.IO provides real-time communication across operational surfaces.
Architecture
Architecture narrative
Four-application hospitality ecosystem: customer PWA, staff POS, admin dashboard and backend API, sharing a PostgreSQL operational data model and real-time Socket.IO communication.
frontend
Next.js 14, React 18, TypeScript, Tailwind CSS, TanStack Query and Zustand across customer, staff and admin interfaces
backend
Node.js/Express TypeScript API with JWT, bcrypt, Helmet, CORS and Socket.IO
database
PostgreSQL accessed through Prisma ORM
infrastructure
Turborepo monorepo with Vercel-deployed frontend applications
services
QR sessions, ordering, preparation tickets, inventory, payments, receipts, staff operations and salon appointments
integrations
Twilio messaging/receipt delivery and external location/AI integration points documented in the project
Engineering decisions
Split customer, staff, admin and API concerns into separate applications
Reason: Each operational audience has materially different tasks and interaction patterns.
Engineering benefit: Each interface can evolve independently while sharing one backend contract.
Use a relational PostgreSQL domain model
Reason: Orders, tables, inventory, staff, payments and appointments require strong relationships and traceability.
Engineering benefit: Operational records can be linked consistently across workflows.
Use Socket.IO for real-time state propagation
Reason: Hospitality operations depend on rapid status changes between guests, waiters and preparation stations.
Engineering benefit: Order progress can be surfaced across multiple interfaces without manual refresh cycles.
Use QR tokens for table and area context
Reason: Customers need a low-friction way to identify where service should be delivered.
Engineering benefit: Digital ordering starts with the correct venue context.
Core capabilities
- Customer Progressive Web App
- QR table and area sessions
- Digital menu browsing
- Cart and order placement
- Real-time order tracking
- Staff POS portal
- Waiter zone assignment and load tracking
- Kitchen and bar preparation tickets
- Administrative KPI dashboard
- Menu/category/variant/modifier management
- Inventory and stock transaction management
- Menu-to-inventory consumption links
- Low-stock state tracking
- Payment and transaction records
- Digital receipt generation and delivery tracking
- Staff roles and access workflows
- Salon service and appointment management
- Real-time Socket.IO notifications
Challenge, response, outcome
Customer ordering and staff fulfilment can become disconnected in a multi-section venue.
Response: Shared order records and real-time events connect the customer PWA, waiter interface, kitchen/bar tickets and admin views.
Verified outcome: The same operational order state can drive multiple role-specific interfaces.
Manual stock tracking makes hospitality inventory difficult to reconcile.
Response: Inventory items, transactions and menu-item consumption links are modelled directly in the backend.
Verified outcome: Stock movements can be tied to operational events and low-stock conditions.
A venue combining food, beverage, lounge and salon services needs more than a generic restaurant POS.
Response: The domain model includes section types, waiter zones, preparation stations and salon appointment workflows.
Verified outcome: Different service lines can operate within one platform architecture.
Security and reliability
- API stack includes JWT-based authentication and authorization
- Passwords are designed to be hashed with bcrypt
- Helmet and CORS are included in the backend security stack
- Operational records use typed relational models and indexed identifiers
- Receipt delivery state and payment status are separately tracked
Performance and scalability
The monorepo separates frontend workloads from the API service, while Socket.IO handles real-time operational events and PostgreSQL/Prisma provide a structured persistence layer for orders, inventory, users, receipts and appointments.
User experience
Customers can enter through QR context, browse a mobile-first menu, place and track orders and receive digital receipts, while staff and administrators work through role-specific operational interfaces rather than a single overloaded dashboard.
Technology architecture
Data
PostgreSQL · Prisma ORM
Backend
Node.js · Express.js · TypeScript · Socket.IO · JWT · bcrypt · Helmet · CORS
Frontend
Next.js 14 · React 18 · TypeScript · Tailwind CSS 3 · TanStack Query · Zustand
Platform
Turborepo · Vercel
Integrations
Twilio · QR-code workflows
Approved project evidence
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Current status
Production
Engineering insights
Hospitality software benefits from modelling the physical operation explicitly. Tables, venue sections, waiter zones, preparation stations, inventory consumption and receipts are first-class domain objects rather than UI-only concepts, allowing the software to reflect how the venue actually works.
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