Java software development company

As an experienced Java software development company, we cover the following list of technologies: core Java, Spring frameworks (Boot, Data, Security, Kerberos, LDAP, Webflow), Hibernate, Apache, Message Brokers, Web services (SOAP, REST), etc.

We develop enterprise-level Java applications such as SaaS platforms and cloud apps, enterprise integration gateways, ERP systems, IoT solutions.

Java development company

Java development 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

How we work


We work basing on time-material and dedicated team involvement models. Each month of work is followed by a comprehensive report on the performed activity


Our solutions suit both greenfield startups and well-established enterprises. Depending on your needs, we can provide you with our company’s team only or hire and include an outstaffed employee into our staff team 


Our development and delivery approach is based on agile manner. we perform our work effectively and efficiently so you can get your project back in a short time

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 […]

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 […]

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.