Travel software development services

We have 10+ years of experience in enterprise travel software development.

We do travel portal development; suppliers travel API integration (hotels, cars, flights, insurance, etc.); scalable b2b/b2c IBE solutions supporting full search&book flow with retrieve and refund functionality; responsive travel websites; custom mobile travel apps; up-sell/cross-sell and dynamic packaging logic implementation.

travel software development

Custom travel software
development services

We deliver solutions that decrease distribution costs and increase profits​

Suppliers travel API integration

Flights, hotels, car rental, transfer, etc.

Travel portal development

A full stack of front-end and back-end development

B2B/B2C IBE solutions

Support of full search & book flow with retrieve and refund functionality

Responsive travel websites

Multi-platform development, fully customizable CMS, UX/UI design

Custom mobile travel apps​

Mobile-first approach, native iOS/ Android apps, cross-platform development

Upsell/cross-sell and dynamic packaging logic implementation​

Travel products merchandising

What we can do for you

Hotel groups, consolidators, and bed banks

Whether you want to increase your exposure to different client segments or broaden online distribution through different sales channels, we help consolidate and maintain your inventory. If you are an inventory supplier or run a hotel chain, we ensure integration into a wholesaler’s environment and help you manage inventory and bookings in real-time, be it a travel portal, mobile app or travel website.

Travel agencies & OTAs​

We can extend your inventory with multiple GDS/CRS systems (Galileo, Sabre, Amadeus, Sirena, Worldspan), travel services and suppliers, to give you the cheapest fares and the best deals, and grow a daily number of reservations. With our solutions, routine tasks, like email confirmations and reporting, and streamline business processes, from reservation to online payment, issue of tickets and check-in will become automatic and effortless to you.


We help you provide the lowest possible ticket price to your customers, by unbundling value-added offerings from the base price and implementing ancillary and air merchandising services. Allocated seating, priority boarding, airport transfer, travel insurance, online check-in, business lounges, hotel booking, car rentals, etc. We also can update legacy systems and streamline a software migration project to ensure that your company is one step ahead of the competition.

Cruise & ferry companies

We offer full-cycle software development for ferries operators, building robust IBE, implementing reservation systems, and accomplishing integration with the selected suppliers’ APIs. Whatever business problem you are facing – reducing IT costs and risks, introducing new tools for revenue optimizations, raising your customer service, or getting an attractive user-centric website or mobile app – we will deliver a solution that addresses your particular needs.

Airline startup

Once you decide to enter the commercial aviation market, we will share with you the right insights, industry know-how and technical expertise, to help grab a market share from global and local leaders. We are offering our long-standing expertise in the full cycle airline online distribution platform and IBE development, including both solutions built from scratch and on top of our in-house product components.

Tour operators

To make sure that you provide your customers with world-class itineraries faster than your competitors, we build solutions with strong back-office functionalities, dynamic packaging logic and upsell and cross-sell tools, and ensure seamless integration with PSS systems. We aim to give you access to the widest choice of airlines’ tariffs, including those not provided by GDSs, while generating a minimum number of GDS transactions.

MSE & virtual interlining services

We augment several integrations for fare finder engines to offer the cheapest flight options to end-users and put in place data update mechanisms, to showcase real-time availability.

travel software development

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Our services

Custom Java development

  • System analysis
  • Back-end development 
  • Support and administration of a custom solution

Redesign of legacy systems

  • Re-engineering 
  • Optimization 


  • Enterprise integration gateways development & integration 
  • Certification support (PCI DSS, etc.) 

Testing and QA

  • Functional manual and automated testing 
  • Regression 
  • Performance and stress testing


  • Migration of legacy systems from one supplier to another 
  • API updates
  • Framework versions migration

Dedicated teams

  • Allocation of dedicated software development teams 
  • Augmention of our clients’ in-house IT department

Development on top of the in-house platform components​

  • IBE supporting full search and book
  • Ancillaries merchandising and bundling
  • Payments and loyalty gateways
  • Manage orders, retrieve, cancel and refund
  • Web check-in
  • Responsive and rich UI booking portals
  • Mobile Apps for iOS and Android
  • Back-office - crew & staff ticketing, call center support
  • PCI DSS and IATA NDC level 4 certified
  • 24/7 support
airline api integration

Tech Stack

custom software development for travel
  • Java, Spring frameworks (Boot, Security, Webflow, etc.), JPA, Hibernate, etc.
  • Apache Camel, REST, messaging (Kafka, JMS), Web sockets
  • PostgreSQL, MongoDB, Redis, Hazelcast
  • Python, Django, Flask, Keras, Scrapy
  • Objective C, Swift, Kotlin
  • JavaScript (ES6), React.js, Redux.js, Jest, Enzyme, Thymeleaf, Node.js
  • Kubernetes, Docker, S3
  • Amazon IoT & Cognito, Lambda, EC2, ELB
  • AWS (CloudWatch, Dynamo,) Prometheus, Grafana, MQ, Elasticache

Featured customers

Web backend developmnet and IoT development
back-end web and mobile development
web mobile backend frontend development
"Resliv helped facilitate the design of S7 Airlines new 365/24/7 retail platform, S7 Travel Retail, for Selling and Servicing of S7 Airlines products and beyond. Resliv effectively helped define key deliverables and also supported us through the execution and migration process to realise the distribution platform, development processes, technology and to enable our superior customer experience in line with our strategic objectives and goals".
Dmitry Chuyko
CEO at S7 Travel Retail

Selected case studies

Enterprise integration of suppliers and services into a distribution platform

Enterprise integration of suppliers and services into a distribution platform Travel Full set of the third party systems integration with airline distribution platforms Our project’s highlights: Long-term 24/7 support and testing  A set of integrations supported possibilities to capture additional last-minute revenues with upselling and cross-selling of ancillaries during check-in.  Full-stack integration with travel third-party […]

Android application for S7 airline

Android application for S7 airline Travel A native mobile application integrated with tickets distribution platform and additional travel products and services suppliers Our project’s highlights Integration with third-party services Multi-language support Flexible booking process Responsive UI The Client During long-term cooperation with S7, a leading Russian airline, the client asked for the development of a […]

Development of an iOS application for S7

Development of an iOS application for S7 Travel A high-end mobile application for ticketing, booking, and managing your flights  Our project’s highlights: Travel products  Multi-language support Profile management Order on-the-go The Client As part of the cooperation between S7, a major Russian privately-owned airline company, and Resliv, our engineers were to develop and support an […]

Front-end development for Cyprus Airways

Front-end development for Cyprus Airways Travel Website front-end development for international flights distribution and ancillary merchandising in B2B and B2C sectors Our project’s highlights Single Page Application  Intuitive and flexible UI based on BEM methodology Multi localization, including Latin, Cyrillic, Chinese, Arabic & Greek  Responsive cross-browser solution A human-centric attractive layout Scalable website The Client […]

Front-end Development for S7 Airline website

Front-end Development for S7 Airline website Travel Full-fledged front-end development for selling and cross-selling air and ground travelling services Our project’s highlights Integration with third-party suppliers Multi-language support Fully customizable and intuitive interface Flexible booking flow The Client The client, S7, is the leading Russian airline cooperated with Resliv, where our company delivered comprehensive web-site […]

Ancillary Services Solution for Сyprus Airways

Ancillary Services Solution for Сyprus Airways Travel Delivering a module for amplifying ancillary revenue per passenger Our project’s highlights The scope of work included both the front-end part, including the company’s website and a native mobile app and the back-end. The system features dynamic packaging, which bundles flight rates and third-party travel products (hotels, car […]

Airline Reservation Module for Cyprus Airways

Airline Reservation Module for Cyprus Airways Travel A flight reservation solution for B2C passengers B2B travel agencies Our project’s highlights Multi-language and multi-currency support Real-time updates for the marketing department, enabling them to adjust marketing campaigns, introduce loyalty programs, and make personalised offers based on customer segmentation  Multiple filtering options The Client To support the […]

Ancillary Product Module for S7

Ancillary Product Module for S7 Travel Enforcing dynamic packaging and revenue management with a specialised module  Our project’s highlights Transfers: GetTransfer, etc. Hotels:,, etc. Insurance: Tinkoff, Alfa-Insurance Car rentals: Avis, Herz, etc. The Client S7, the largest Russian privately-owned air carrier, engaged Reslive into delivering a full-fledged airline reservation system.  To support a trend towards the sales […]

Frequently asked questions

Sure. We start from a free consulting session after we get and analyze all the initial customer requirements and inputs. During the consulting session, we clarify all the possible questions.