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Senior Java Developer – Backend and System Integration
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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on payment terminal management systems using Java 8+, Spring Boot, Hibernate, RabbitMQ, WildFly/JBoss. Responsibilities include designing and implementing IT solutions, migrating TMS to RTMS components, system integration via REST, SOAP, RMI, and working with distributed systems. Tasks also cover security support and automated testing development. Experience with Java, API, Oracle, Git, Maven, CI/CD is required.

you can start ASAP

Senior Java Developer – Backend and System Integration

Company: ITDS Polska Sp. z o.o.

from: 25 May 2026
to: 24 June 2026
21 840 - 24 360 złnet (+ VAT)/ mth.B2B contract (full-time)
Salary details
basic salary
Offer parameters
level:senior
working mode:hybrid
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

Java
Spring Framework
Spring Boot
Hibernate
RabbitMQ
Oracle
WildFly
JBoss
Git
Maven
Jenkins
GitLab

Optional technologies

Fortify
Sonatype
Hazelcast

Operating system

Windows

Our requirements

  • At least 4 years of experience in Java development and system integration.
  • Very good knowledge of Java 8+ and object-oriented programming.
  • Practical experience with Spring, Spring Boot, Hibernate/JPA, and JEE frameworks.
  • Hands-on experience with RabbitMQ and relational databases, especially Oracle.
  • Proficiency in RESTful API design and distributed systems.
  • Familiarity with application servers (WildFly/JBoss) and version control (Git, Maven, Jenkins, GitLab CI/CD).

Optional

  • Experience with scanning tools like Fortify or Sonatype.
  • Knowledge of Hazelcast for distributed caching.

Your responsibilities

  • Design and implement IT solutions based on analytical and technical documentation.
  • Review and create technical documentation for system components.
  • Perform system upgrades and work with legacy code, including reverse engineering.
  • Define and build test cases for automated testing frameworks.
  • Collaborate on system integration projects using REST, SOAP, RMI, and database links.
  • Contribute to migration efforts from TMS to RTMS components.
  • Work with distributed systems, message queues (RabbitMQ), and application servers (WildFly/JBoss).
  • Support vulnerability assessments and ensure system security compliance.

About the project

As a Senior Java Developer – Backend and System Integration, you will be working for our client, a leader in terminal management systems, focused on managing extensive payment terminals across diverse hardware vendors. You will help design and implement scalable IT solutions that enhance system integration and optimize business processes, contributing to cutting-edge financial technology.
Ignite innovation in enterprise systems — architect the future of payment terminal management!
Warszawa-based opportunity with hybrid work model.
Only candidates with an existing legal right to work in the European Union will be considered for this role.

This is how we organize our work

This is how we work

at the client's siteagilescrum

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration

#GETREADY to meet with us!

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people.
We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data.

ITDS’s Whistleblower Procedure

📌 You can report violations in accordance with ITDS’s Whistleblower Procedure available here: https://itds.pl/wp-content/uploads/2025/03/INFORMATION-ON-PROCEDURE-FOR-REPORTING-BREACHES-AND-PROTECTION-OF-WHISTLEBLOWERS-AT-ITDS-POLSKA.pdf
Company

What we offer

  • Stable and long-term cooperation with very good conditions
  • Enhance your skills and develop your expertise in the financial industry
  • Work on the most strategic projects available in the market
  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
  • Participate in Social Events, training, and work in an international environment
  • Access to attractive Medical Package
  • Access to Multisport Program
  • Access to Pluralsight
  • Flexible hours

Benefits

  • sharing the costs of sports activities
  • private medical care
  • flexible working time
  • fruits
  • integration events
  • corporate gym
  • saving & investment scheme
  • no dress code
  • coffee / tea
  • drinks
  • christmas gifts
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • access to +100 projects
  • access to Pluralsight

Recruitment stages

  • 1.
    online interview
  • 2.
    online interview

ITDS Polska Sp. z o.o.

ITDS supports financial service providers to take the next steps.
We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization.
We see where banks, insurers, payment companies, or fintech can go and how they can get there.
That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality.
ITDS in Poland - Pure player in new Technologies & Financial Industry
+300 IT implementation professionals
+20 clients in the Banking, Insurance, Payment & Fintech Industry
ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities.

This is how we work

Senior Java Developer – Backend and System Integration
21.8k–24.4k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Warszawa, Masovian
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