I am building a state-of-the-art, whitelabel B2C travel centre that will serve online travel agencies worldwide and must be ready for a 2025 roll-out. The core of the project is a single code-base that delivers: • Seamless booking management, secure payment processing and integrated customer support • Full parity across Web, iOS and Android, with responsive UX patterns native to each device family • Multi-currency handling (including real-time FX conversion) and multi-language content switching • Real-time API connectivity for flight, hotel, car-rental and cruise inventory, with headroom to bolt on additional suppliers later I will supply brand guidelines and any private API credentials; you will architect, code, document and deploy the solution. A modular approach is essential so that partner agencies can skin the interface and toggle products without code changes. Acceptance criteria 1. A working demo on web, plus test builds for iOS & Android, showing end-to-end search-to-checkout for all four product types. 2. Admin dashboard for booking amendments, refund initiation and customer ticketing. 3. Proof of multi-currency settlement through at least two PSPs. 4. JSON/Swagger documentation for every public endpoint and clear instructions for whitelabel configuration. 5. Automated test suite covering critical paths (CI/CD ready). Please outline your preferred stack, any relevant travel-tech experience and the timeline you would follow from kickoff through MVP release. Only for people with experience in developping online travel project with API integrations