B2B Flight Booking Portal Development

We are looking for an experienced aviation technology developer/company to build an enterprise-grade B2B Flight Booking Portal for Sky Direct Travel. The platform must integrate directly with GDS and NDC/airline APIs, including Amadeus, Sabre, Travelport and major airline NDC connections, subject to commercial access. Key Features: • B2B travel agent & sub-agent portal • Domestic & international flight search • Real-time availability, pricing & fare rules • GDS + NDC + direct airline content aggregation • PNR creation, ticketing, void, cancellation, refund, reissue & exchange • Seats, baggage and ancillary services • Agent wallet, credit limit & ledger • Dynamic markup, commission & service-fee engine • Admin/back-office dashboard • Agent KYC, user roles & permissions • Financial reconciliation, invoices & reports • WhatsApp/email notifications • Secure, scalable API-first architecture • Agent API and future white-label capability We need a proprietary enterprise solution, not an aggregator/template-based website. Please share your aviation projects, direct GDS/NDC experience, technology stack, timeline, development cost and annual maintenance cost. Clearly separate development fees from GDS/NDC, airline, cloud and third-party charges.