Industry
Software engineering for Hospitality
Hospitality technology is a fragmented ecosystem of systems that rarely integrate cleanly. The hard part is keeping availability and rates consistent in real time across every channel, not the guest app everyone wants to talk about.
Why the domain matters
Hospitality software has a reputation for being simple that it does not deserve. On the surface it is rooms, rates and reservations. Underneath it is a fragmented estate of systems: a property management system that may be decades old, a booking engine, one or more channel managers pushing to a dozen online travel agencies, a revenue-management tool, a point-of-sale for food and beverage, payment terminals, door locks and a guest app. Most of which were never designed to talk to each other. The defining problem in this sector is not building any one of those systems. It is making them agree with each other in real time.
We build for independent hotels, accommodation providers and multi-property groups, and the constraints shift with scale. A single boutique hotel wants a booking engine that does not leak commission to the OTAs and a check-in that does not queue guests at the desk. A group wants consistent availability and rates across every property and every channel, revenue tooling that can actually see the whole estate, and loyalty that works whether the guest booked direct or through Expedia. What they share is a dependency on distribution: rooms are a perishable inventory, an empty room tonight is revenue you never recover, and the systems that sell those rooms have to stay in sync or they cost you money directly.
Our position is blunt. The shiny guest app is the easy, visible part, and it is rarely where a hospitality project succeeds or fails. Success lives in the integration and the real-time sync: in a channel manager that does not oversell the last room, in a rate change that reaches Booking.com before a guest books at the old price, in a PMS integration that survives the vendor changing their API. That is unglamorous, high-stakes work, and it is the work we do because we understand the domain, not because we can wire up a pretty front end.
The challenges in hospitality
Overbooking and rate parity are the money problems
The moment you sell the same inventory across multiple OTAs, you own a real-time consistency problem. If availability does not decrement everywhere the instant a room sells, you oversell and either walk a guest or eat a relocation cost. If a rate change reaches one channel and not another, you breach rate parity or sell too cheap. These are not edge cases. They are the daily failure mode of channel management, and they cost real money every time.
The system landscape is fragmented by default
A typical property runs a PMS, a booking engine, a channel manager, a payment gateway, a POS for F&B and often door-lock and other IoT systems, frequently from different vendors, of different vintages, with different data models. Nothing is a single source of truth on its own. Most of the effort in any hospitality build goes into making these systems reconcile, not into new features.
The PMS is often old and hard to integrate
The property management system is the operational heart, and in many properties it is legacy software with a limited, brittle or partner-gated API. Some expose reasonable interfaces; some offer nightly file exchange and little else. You cannot rip it out without disrupting the whole operation, so you integrate around its real capabilities, which are usually narrower than the sales sheet suggests.
Guests expect a good experience across a bad plumbing layer
A guest wants to book, check in on their phone, get into their room, order to the restaurant and check out without friction. Delivering that means stitching together systems that do not naturally share state. A digital check-in that cannot reliably tell the PMS the guest has arrived, or issue a door credential, is a demo, not a product.
Direct bookings versus OTA dependence
OTAs bring volume but take commission, and every property wants to shift the mix towards direct bookings through its own booking engine. That only works if the direct channel is genuinely competitive on price, availability and ease, which loops straight back to keeping the booking engine perfectly in sync with the same inventory the OTAs are selling. Half-synced direct booking is worse than none.
Payments and guest data raise the compliance floor
Taking card payments puts you in PCI DSS scope, and card data flows through the booking engine, the PMS, the POS and often the OTAs. Guest personal data (names, contact details, stay history, sometimes passport or loyalty data), is personal data under UK GDPR. A casual approach that would pass in a low-stakes app is a liability once you are handling cards and cross-border guest records.
What we build for hospitality
The systems this sector most often needs, built by engineers who understand the domain, not just the code.
Direct booking engines
Fast, conversion-focused booking engines that sell your inventory without leaking commission, wired to the same availability and rates as every other channel so a direct booking can never oversell against an OTA booking. Built to load quickly, handle rate plans and promotions, and take payment cleanly, because an abandoned booking is lost revenue you do not get back.
Channel-manager integration
Integration with channel managers, or bespoke distribution logic, that keeps availability and rates consistent across Booking.com, Expedia and the rest in as close to real time as the channels allow. We treat oversell prevention and rate-parity integrity as the primary requirements, with reconciliation and alerting for when a channel inevitably lags or a push fails.
Guest apps and digital check-in
Guest-facing apps and web flows for booking, digital check-in, room access, in-stay requests and checkout, built on top of reliable PMS and door-lock integration so the experience actually reflects the property’s real state. We are candid that the value is in the integration behind the app, not the screens in front of it.
PMS integration and modernisation
Integration with existing property management systems through whatever routes they genuinely support, and, where a group has outgrown its PMS, careful modernisation or replacement planning. We integrate around the real capabilities of the incumbent rather than assuming a clean API, and we never treat ripping out the operational core as a decision to take lightly.
Revenue and analytics tools
Revenue-management and analytics tooling that pulls booking, rate and occupancy data across the estate into one view, so pricing decisions rest on the whole picture rather than one property’s PMS. Dashboards for occupancy, ADR, RevPAR and channel mix, and, where it earns its place, demand-based pricing support with human oversight rather than a black box.
Loyalty and guest recognition
Loyalty and guest-recognition systems that work regardless of booking channel, so a repeat guest is recognised whether they came direct or through an OTA. Tied to a unified guest profile across properties, with the data-protection controls that holding stay history and preferences demands.
Where we help
Direct booking engine that never oversells
A booking engine for an independent hotel or small group that draws live availability and rates from the same source as the channel manager, so a direct booking decrements inventory everywhere and cannot conflict with an OTA sale. The engineering effort sits in the sync and the payment flow, not the booking form.
Channel sync for a multi-property group
A distribution layer that keeps availability and rates aligned across every property and every OTA, with monitoring that flags when a channel falls behind and reconciliation that catches oversell risk before a guest is walked. Built to degrade safely when a channel’s API is slow or down rather than silently drifting out of sync.
Digital check-in with real door access
A mobile check-in flow that verifies the guest, confirms arrival to the PMS, takes any balance through a PCI-compliant payment path and issues a working door credential through the lock system. It only earns its keep if every one of those integrations is reliable. A check-in that cannot open the door is theatre.
Estate-wide revenue dashboard
A revenue and occupancy dashboard that consolidates data from multiple PMS instances and channels into one view of the group, exposing occupancy, ADR, RevPAR and channel mix so revenue managers price against the whole estate. The hard part is reliably extracting and reconciling data from systems that model rooms and rates differently.
How we build for hospitality
We start with distribution and sync, because that is where the money and the risk are. Before anyone designs a guest screen, we map how availability and rates flow between the PMS, the booking engine, the channel manager and the OTAs, and we decide how the system behaves when (not if), a channel lags or a push fails. Oversell prevention and rate-parity integrity are requirements we design for first, not properties we hope emerge from a happy path.
We integrate against the real systems early. The PMS, channel manager and payment gateway are the highest-risk integrations in any hospitality build, so we prove them against real or realistic endpoints before committing to a plan, and we design for the vendor to change their API under us. We prefer supported integration routes over brittle scraping, and we are honest when an incumbent PMS simply does not expose what a feature needs, sometimes the truthful answer is that a given capability is limited by what the ecosystem allows, not by our effort.
And we operate what we build. Distribution problems do not wait for office hours: an oversell or a stuck rate push is a live revenue and reputation issue the moment it happens. We design for observability, safe degradation and reconciliation so failures are caught and contained, and senior engineers who understand the domain stay involved after go-live rather than handing an oversell incident to a first-line team who have never seen a channel manager.
The regulatory landscape
Hospitality’s two hard compliance obligations come from payments and guest data. Any property taking card payments falls under PCI DSS, and because card data can flow through the booking engine, the PMS, the POS and the OTAs, the scope is wider than teams expect. The pragmatic goal is to minimise that scope: keep raw card data out of your systems by using tokenisation and a compliant payment provider, so you are not storing what you do not need and not carrying compliance burden you can design away.
Guest personal data sits under UK GDPR and the Data Protection Act 2018. Names, contact details, stay history and preferences are personal data; passport or ID data captured at check-in and loyalty profiles raise the stakes further. You need a defensible lawful basis, data minimisation, sensible retention and clear handling of the cross-border reality that OTAs and international guests create. Marketing consent for loyalty and email is its own obligation, not something to bundle into a booking checkbox.
Beyond those, groups operating across jurisdictions inherit local rules: guest-registration and tourist-tax reporting, accessibility expectations on public-facing booking flows, and consumer-protection rules on pricing transparency and cancellation terms. None of this is as heavy as, say, clinical or financial regulation, but it is real, and a booking flow that hides fees or mishandles cancellations creates legal and reputational exposure that outlasts the sale.
Systems and standards we integrate with
The integration layer is where hospitality projects are won or lost. At the centre is the property management system (the operational source of truth for rooms, guests and folios), which we integrate with through whatever it genuinely supports, from modern APIs to older file-based exchange. Around it sit the channel managers and OTAs (Booking.com, Expedia and the wider distribution network), and for some properties the GDS, all of which have to see consistent availability and rates.
On the guest and operations side we integrate with payment gateways and terminals for card processing, point-of-sale systems for food and beverage so charges post to the right folio, and door-lock and other IoT systems so a digital check-in can actually issue a working credential. Each of these has its own protocol, its own reliability profile and its own failure modes, and each moves at its own pace: we plan for that rather than assuming everything speaks the same language on day one.
We are realistic about what these systems allow. Some PMS platforms expose good APIs; some gate integration behind a partner agreement or offer only limited write-back. Channel connectivity ranges from near-real-time push to slow polling. Door-lock and POS vendors vary widely in how open they are. We map the achievable integration honestly at the start, so the roadmap reflects what the ecosystem actually permits, not what the pitch deck assumed a fragmented, legacy estate would happily do.
Security and data protection
In hospitality, the two things worth stealing are card data and guest data, so both are designed for from the start. On payments, the priority is to keep raw card data out of your systems entirely: tokenisation and a PCI-compliant gateway mean the booking engine and PMS handle references, not PANs, which shrinks both the attack surface and the compliance burden. Where card data must transit a system, it is encrypted in transit and at rest and never logged in the clear.
Guest data gets the same seriousness. Access is role-based and least-privilege, so front-desk staff, housekeeping, revenue managers and administrators each see only what their role needs, and access to guest records is authenticated and logged. For groups, a unified guest profile across properties is useful but concentrates risk, so we design its access controls and retention deliberately rather than letting stay history and preferences accumulate unbounded.
Across the whole surface we apply the ordinary discipline that a distributed, integration-heavy estate demands: secrets management for the many API credentials a hospitality system holds, dependency and vulnerability monitoring, secure development practices, and a defined incident-response path. Because we operate what we build, the people who designed the security model are the ones who respond when a credential leaks or an integration behaves oddly, which is exactly when understanding how the pieces fit together counts most.
What changes
No overselling, no rate drift
Availability and rates that stay consistent across the booking engine and every OTA in as close to real time as the channels allow, with monitoring and reconciliation that catch drift before it walks a guest or breaches rate parity.
A direct channel that actually competes
A booking engine wired to the same live inventory as the OTAs, so shifting the mix towards commission-free direct bookings is a real option rather than a half-synced liability.
Integrations that survive the estate
PMS, channel-manager, payment, POS and door-lock connections built against real endpoints and designed to survive vendors changing their APIs, so the guest experience reflects the property’s real state instead of quietly falling out of sync.
What we build for hospitality
From a first platform to modernising what you already run. The disciplines this sector draws on most.
How we deliver
- 01
Discover
We map the system, the constraints and the business it serves, including the parts nobody documented.
Architecture brief
- 02
Architect
Decisions get made, written down and defended before a line of production code exists.
Decision records
- 03
Build
Short cycles against working software. You see progress in the product, not in a status deck.
Shipping increments
- 04
Operate
Monitoring, incident response and iteration. The system is alive, so the engagement is too.
Runbooks & SLOs
Building something for hospitality?
Tell us the problem and the constraints you are working under. A senior engineer will give you a straight view on what it would take, and say so plainly if we are not the right team for it.
Technologies we work in
Chosen per problem, not per fashion. A selection of the stack we most often reach for.
Why teams in hospitality choose us
We know the hard part is integration, not the app
We design for distribution, real-time sync and the fragmented system landscape first, because that is where hospitality projects succeed or fail. The guest app is the visible part; keeping the systems behind it in agreement is the actual work, and it is the work we lead with.
Senior engineers, no handoffs
The people designing your channel sync and PMS integration are senior engineers who stay on the project. Real-time consistency across legacy systems is not work to delegate to whoever is cheapest and hope the last room does not sell twice.
We operate what we build
Distribution problems are live revenue events, so we design for observability, safe degradation and reconciliation, and we stay involved after go-live. When an oversell or a stuck rate push happens, someone who understands the whole integration responds, not a first-line team seeing a channel manager for the first time.
Honest about a fragmented ecosystem
If an incumbent PMS will not expose what a feature needs, if a channel’s connectivity cannot support true real-time, or if a door-lock vendor is too closed to integrate cleanly, we tell you. We will not sell a seamless-looking demo over plumbing we know cannot hold.
Related sectors
Adjacent sectors we also know.
Common questions
How do you stop overbooking across Booking.com, Expedia and our own site?
By treating availability as a single shared inventory and decrementing it everywhere the instant a room sells, in as close to real time as the channels permit. We integrate the booking engine and OTA channels through a channel manager or bespoke distribution logic, design oversell prevention as a primary requirement rather than a hoped-for outcome, and add monitoring and reconciliation to catch the cases where a channel lags or a push fails, because no channel guarantees instant propagation, so the system has to detect and contain drift, not assume it away.
Can you work with our existing PMS, or do we have to replace it?
Usually we work with it. The PMS is the operational heart of the property and replacing it disrupts the whole operation, so we integrate through whatever routes it genuinely supports: modern APIs where they exist, file-based exchange where they do not. We are honest early about what the incumbent can and cannot expose, because that shapes what is achievable. Where a group has genuinely outgrown its PMS we will plan a modernisation or replacement carefully, but we never treat pulling out the operational core as a casual decision.
Is the guest app the main part of the project?
Rarely. The guest app is the visible part, but the value lives in the integration behind it: the PMS, payment, channel and door-lock connections that make a digital check-in actually confirm arrival, take payment and open a room. A polished app on top of unreliable plumbing is a demo, not a product. We build the app, but we lead with the integration, because that is what determines whether the experience works in reality.
What does taking card payments mean for our compliance?
It puts you in PCI DSS scope, and because card data can touch the booking engine, PMS, POS and OTAs, that scope is wider than most teams expect. Our approach is to minimise it: use tokenisation and a PCI-compliant payment provider so raw card data stays out of your systems and you handle references, not card numbers. Guest personal data separately falls under UK GDPR, so we design lawful basis, minimisation and retention in from the start rather than bolting compliance on at the end.
Why is hospitality software harder than it looks?
Because it is a fragmented ecosystem of systems (PMS, booking engine, channel managers, revenue tools, POS, payments, door locks), that were mostly never designed to integrate cleanly, and the defining requirement is keeping availability and rates consistent across all of them in real time. Channel and rate errors cost money directly through oversells and lost parity, and the legacy PMS at the centre often has a narrower API than its sales sheet claims. The hard, high-stakes part is the integration and the sync, not the guest-facing screens everyone wants to talk about first.
Building for hospitality?
Tell us what the system has to do and what it cannot get wrong. A senior engineer reads it, and if hospitality is not a domain we know well enough to be useful in, we will say so rather than learn it on your budget.
- 01A senior engineer reads it. Not a form queue, and not an account manager.
- 02We reply either with questions or with a straight answer that we are not the right fit.
- 03If it looks like a fit, a technical call with the person who would actually run the delivery.
- 04Then scope, effort and risk in writing, before anyone signs anything.