Quick Summary
Amr Samir, Full Stack Developer & Technical Architect, built this project using React, Tailwind CSS, NestJS, MongoDB, Prisma. It demonstrates professional-grade implementation of Full Stack with a focus on performance and scalability.
Book & Go Portal - Travel Agency Operations & Invoicing Engine
7 Skills • 2026
An operational travel agency management engine engineered with NestJS and Prisma for booking workflows, multi-currency customer invoicing, dynamic itinerary building, and passenger manifests.
bookandgoportal.com
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ClientAli
CategoryFull Stack
What this project demonstrates
Technical Specifications
- Project Type: Full Stack
- Primary Stack: React, Tailwind CSS, NestJS
- Deployment: Secure VPS / Cloud Infrastructure
- Architecture: Modern Decoupled Architecture
Core Value Delivery
Delivering scalable, high-performance solutions with a focus on user experience and business growth.
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Project Overview
Project Overview
Client: Ali
Category: Full Stack
Book & Go Portal: Travel Agency Operations & Invoicing Engine
Problem & Operational Context
Regional travel agencies handle complex booking arrangements spanning multi-city flight segments, hotel reservations, and custom group tour packages. Managing these itineraries manually across disjointed spreadsheets frequently leads to pricing errors, unrecorded currency exchange discrepancies, and delayed voucher issuance.
I was the sole developer responsible for designing and implementing Book & Go Portal as a centralized operational platform for Book & Go Egypt. It consolidates booking workflows, passenger list manifests, supplier cost tracking, and automated multi-currency tax invoicing into a structured NestJS management system.
Architectural & Technical Implementation
1. Modular NestJS Architecture
The backend is structured into decoupled domain modules:
BookingsModule: Manages travel reservation lifecycles, confirmation statuses (Draft,Confirmed,Voucher Issued,Cancelled), and room allocation rules.FinanceModule: Handles multi-currency pricing, exchange rate snapshots at booking time, and customer invoice calculations.CustomersModule: Maintains passenger profiles, passport details, and historical travel records.VouchersModule: Automates the generation and delivery of bilingual travel vouchers.
2. Multi-Currency Financial Ledger & Invoicing
Travel bookings often require quoting in USD or EUR while collecting payments and generating tax invoices in EGP. To prevent accounting drift:
- Exchange rates are locked at the time of quotation and stored immutably on the booking record.
- Invoicing utilities calculate subtotal, seasonal surcharges, and applicable taxes with strict rounding rules.
- Generates bilingual Arabic/English tax invoices with structured line items and payment milestone tracking.
3. Server-Side PDF Document Pipeline
Built a dedicated document compilation pipeline for travel vouchers and official invoices:
- Formats passenger itineraries, flight numbers, hotel check-in dates, and payment summaries into clean, printable A4 layouts.
- Handles Arabic text shaping and Right-to-Left (RTL) character ordering correctly so customer documents render cleanly across devices.
Technical Challenges & Trade-offs
- Exchange Rate Snapshots: Floating market exchange rates required storing the exact conversion rate and timestamp on each invoice item rather than recalculating from live rates at query time.
- Relational Integrity in Booking Schedules: Group bookings involve one-to-many passenger relationships and multi-leg flights. Used Prisma ORM schema relations with cascade deletion rules to ensure no orphaned booking records.
Related Resources
- Technologies: NENestJS, TYTypeScript, PRPrisma ORM, MOMongoDB
- Direct Contact: Contact Me
