Senior Java Developer – Payment Terminal Management System

Unleash innovation in payment technology — craft solutions that transform terminal management!

Warsaw-based opportunity with hybrid work model

As a Senior Java Developer, you will be working for our client, a leader in managing a complex payment terminal ecosystem that connects thousands of devices across multiple vendors. You will play a pivotal role in designing and implementing cutting-edge IT solutions to enhance the system’s performance, security, and scalability, driving the future of financial transactions.

Your main responsibilities:

• Design and implement IT solutions based on analytical and technical documentation
• Review analytical documentation and create comprehensive technical documentation
• Conduct technical upgrades and work with legacy code to maintain system integrity
• Perform reverse engineering using existing source code and documented business processes
• Define and build test cases for automated testing frameworks
• Collaborate on system integration tasks involving distributed systems and message queues
• Support ongoing system improvements and security assessments, including vulnerability scans

You're ideal for this role if you have:

• At least 4 years of experience in Java development, with strong object-oriented programming skills
• In-depth knowledge of Java 8+ and frameworks such as Spring, Spring Boot, Hibernate/JPA, and JEE
• Practical experience with message queue systems, especially RabbitMQ
• Familiarity with tools like Maven, Git, Gitlab, Jenkins, Nexus, and Jira supporting software development
• Solid understanding of relational databases, particularly Oracle
• Hands-on experience with RESTful API design and system integration
• Experience working with distributed systems, application servers (JBoss/WildFly), and cache technologies (Hazelcast)
• Knowledge of security scanning tools like Fortify or Sonatype is a plus
• Good command of English (B2 level) and excellent communication skills

It is a strong plus if you have:

• Additional certifications in Java or cloud technologies
• Experience with microservices architecture and containerization (e.g., Docker, Kubernetes)

Language Required for the role:

• Good command of English (Communicative level)

Eligibility for the role:

• Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.