How I built a yacht rental marketplace in Dubai that generated $58K GMV in 6 weeks

In late 2024 I got a contract to build a full-stack yacht rental marketplace for a Dubai-based client. The requirement was simple on paper: iOS app, Android app, web platform, captain management, real-time availability, payments, KYC verification — and Arabic RTL support throughout. Budget: $18,500. Timeline: 3.5 months. Here's what I built, the technical decisions I made, and what happened after launch. The business problem Yacht rental in Dubai is a high-trust, high-friction business. Customers want to book online but can't verify if a yacht is actually available. Double-bookings destroy reputation. Captains need a separate workflow. And if you're operating in the UAE, your platform must feel native in Arabic — not just translated, but properly right-to-left. The client had been running everything through WhatsApp and spreadsheets. They were losing bookings to competitors with actual platforms. Architecture overview I chose a monorepo approach with Turborepo: Backend: Python 3.12 + F