Travel platforms that book trips at scale.
For OTAs, tour operators, corporate travel tools, and vacation rental platforms. GDS/NDC integration, real-time availability search, multi-currency checkout, and the booking engine architecture that converts searchers into travelers.
Availability expires in seconds — build for that.
Travel software has one unforgiving constraint: availability data expires in seconds and pricing can change mid-checkout. GDS feeds return stale fares, NDC aggregation is inconsistent across airlines, and a slow search page means a customer who just opened a Kayak tab next to yours. Most teams underestimate the caching and invalidation complexity until the first complaint about phantom availability hits production.
We've built OTA platforms, flight and hotel search engines, tour booking systems, and corporate travel tools. We know Amadeus and Duffel. We know how fare rules need to be enforced at checkout and how PNR state machines fail under concurrent modification. We build the booking engine as a first-class engineering concern, not a third-party widget integration.
The travel UX bar is set by Booking.com, Google Flights, and Airbnb. Travelers do comparison searches across tabs and bounce on the first sign of friction. We build to that standard — instant-feel search, flexible date grids, transparent pricing breakdowns, and a checkout flow that handles 3DS2 without dropping the booking.
Travel sub-verticals.
What we actually build.
GDS & NDC inventory integration
Amadeus, Sabre, Travelport, and Duffel API integration with real-time fare caching, TTL-based invalidation, and the deduplication logic that prevents phantom availability from reaching your checkout.
Real-time availability search
Sub-second flight and hotel search across millions of itinerary combinations. Flexible date grids, multi-city routing, nearby airport expansion, and price-calendar views — all returning under 800ms at peak load.
Multi-currency checkout & payments
Stripe, Adyen, and local payment method orchestration with 3DS2 authentication, PSD2 compliance, fare-rules enforcement at purchase, and PNR ticketing after successful payment.
Booking management & post-booking flows
Modification, cancellation, seat selection, ancillary upsells, e-ticket delivery, and the itinerary state machine that keeps travelers informed across the full trip lifecycle.
Travel CRM & agent tools
Lead capture, quote management, group booking workflows, commission tracking, and the reporting your operations team needs — integrated with live inventory so agents quote accurate fares.
Loyalty & personalization
Points/miles accumulation engines, tier management, personalized search ranking, saved preferences, and the recommendation logic that increases average booking value without annoying your users.
How we build availability that actually converts.
Most booking platforms fail at the inventory layer, not the UI. Stale fares, phantom availability, and broken checkout flows are engineering problems — not UX ones. Here's how we engineer each layer.
Inventory & Pricing Layer
- Amadeus, Duffel & Sabre API integration
- Real-time fare caching with TTL-based invalidation
- NDC content aggregation & normalization
- Rate deduplication across overlapping GDS sources
- Ancillary services: seat maps, baggage, upgrades
Search & Discovery
- Multi-modal search: flights + hotels + activities
- Flexible date calendar with price-by-day grid
- Nearby airport & multi-city itinerary expansion
- Algolia/Elasticsearch filter & sort layer
- Personalized ranking by traveler history & preferences
Checkout & Fulfillment
- Multi-currency checkout with Stripe/Adyen orchestration
- PSD2 / 3DS2 authentication without booking drop-off
- Fare-rules enforcement: refund & change policies
- PNR management & airline ticketing via API
- E-ticket delivery, push notifications & itinerary sync
PCI DSS Level 1 infrastructure — card data never touches your servers
Tokenized card data · 3DS2 authentication · Fraud detection · Chargeback protection
Travel APIs & partners we integrate.
GDS feeds, hotel partners, payment gateways, and messaging infrastructure — each with the undocumented edge cases we've already hit and engineered around in production.
Built for regulated commerce.
Travel sits at the intersection of financial regulation, data protection law, and industry-specific standards. We build every platform to satisfy these as engineering constraints, not afterthoughts.
Tools we reach for first.
From API audit to live bookings.
Every travel engagement starts with an inventory and API audit and ends with monitoring that keeps your booking engine production-safe when GDS contracts change.
Inventory & API audit
We map every GDS/NDC contract, data-use restriction, and display rule that applies to your platform. You get a written API architecture document and a fare-caching strategy before we write a line of booking engine code.
Search & pricing architecture
We design the cache TTL strategy, search index schema, fare-rules enforcement model, and the checkout state machine. Decisions like Elasticsearch vs. Algolia and Stripe vs. Adyen are made here with benchmarks.
Build with availability controls in-line
Phantom availability is prevented at the pipeline, not caught in customer support. Price re-validation, fare-rule enforcement, and PNR state integrity are first-class features — not post-launch fixes.
Launch & inventory reliability handoff
We instrument search latency, GDS response time, cache hit rates, and checkout conversion by step. You get runbooks for GDS outages, API deprecations, and NDC migration paths — plus on-call escalation paths for booking emergencies.
Where to start.
Frequently asked.
7 questions answered. Still have one? Reach out.
Yes — we've built against Amadeus Self-Service and Enterprise APIs, Duffel's NDC layer, and Sabre's REST APIs. Every GDS has undocumented edge cases in fare construction and ticketing. We document these up front and build the fare-rules enforcement layer before checkout, not after the first refund dispute.
Let's build what's next.
Tell us what you’re building. We’ll tell you how we’d help.