Backend development services

With over 10 years of backend development experience, we offer you proven services and the latest full set of Java and Python related technologies. Our expertise extends to payment systems, e-commerce, enterprise integration projects, cloud platforms, and IoT. And this is just a short list of our capabilities.

We don’t mind whether you are a green startup, SME, or a corporate-level business. We are ready to discuss conditions and fit into your budget.

If you are ready to cooperate, feel free to contact us about your next project.

backend development services

Back-end solutions

Web-systems back-end development

We provide unique and high-end website development services in a stack with front-end solutions. Our developers also do reverse engineeringenterprise integration gateways development & integration, certification support (PCI DSS, IATA NDC, etc.) as a part of these services


With vast experience at travel eCommerce, we can deliver our clients reservation systems that will be comfortable for your customers. Our engineers ensure a robust back-end for your web-site or application to be database compatible with integrated CRM and payment authorization and services


We can enrich our back-end solution with provided API services. Whether you just need to integrate your existing application or site with web services or modernize an API or develop API from scratch. We are here to help with any challenge you have


Resliv will help with implementation and optimization of CMS and CRM systems that will fit the business. Have high corporate security requirements? Or maybe need some advanced features? A team will build a custom CMS. We also do subsequent support and maintenance of your developed product

Internet of Things solutions

Our engineers can do a back-end IoT solution for your hardware business. Integrated with Amazon IoT cloud, the product will have such additional services as big data analysis and long-term support

Machine Learning

We’ve already put into action some AI and ML solutions. Scrupulous data classification algorithms, images analysisclassification algorithms development, and testing will give an error-free application. Resliv also delivers API and SDK development as a part of ML solutions

Re-engineering, optimization and re-design of legacy systems

We offer websites and applications re-engineering services, including refactoring, reverse engineering, database upgradingmigration from outdated application servers, operating systems, languages to modern ones. Our specialists can also convert existing websites to responsive and improve user experience


We have expertise in web applicationswebsites, platform compatibility, and APIs testing. We do functional manual and automated testing, including regression, smoke, integration, system, and acceptance testings; performance testing with such services as load, stress, volume, productivity, and scalability testings

Hire a back-end developer

Our dedicated software development team always meets deadlines and delivers high-quality back-end solutions. Form a team of Java/ Python engineers that will fit your in-house IT department

Back-end development technologies

With rich experience at back-end development, our engineers are ready to implement top-notch technologies in your product to make it niche-competitive. We deliver solutions using the following tools:

Advantages of working with Resliv

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

Blockchain application development for Devery

Blockchain application development for Devery Blockchain Development of REST API, based on Devery.js protocol, and an administrative panel  Our project’s highlights Complete front- and back-end development  UI/UX development REST API development The Client Devery is a blockchain startup that built a whole ecosystem for verifying and controlling digital and physical goods’ and services’ pathways. They […]

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 […]

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 covered 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 […]

Flight Reservation Module for S7

Flight Reservation Module for S7 Travel An end-to-end solution for flight ticket booking             scheduling reservation      ticketing Our project’s highlights Multi-language (Latin, Cyrillic, Chinese, Arabic & Greek) and multi-currency support Marketing-related functionality, like special promotions, discounts, top destinations, last minute deals, for higher conversions and efficient marketing budget allocation […]

Custom software development – payment systems

Custom software development – online payment solution FinTech Integration with payment systems and preprocessing of payment cards Our project’s highlights Omnichannel payment processing services Payment routing according to business rules Processing of data in compliance with PCI DSS standard The Client S7 is a major Russian privately-owned airline company.  It turned to Resliv for delivering […]

Scooter sharing system

E-mobility platform development and integration Sharing Economy Development of a platform for sharing mobility, including cloud and IoT devices integration, web portal, and mobile application development Our project’s highlights Integration with AWS IoT platform Back-office development (an assets control system, user management system, integration with accounting software, business rules engine) Integration with outbound API Development […]

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