Senior Java Developer - Microservices

Ignite innovation — shape the future of enterprise systems!

Warszawa-based opportunity with hybrid work model (up to 4 remote days per week).

As a Senior Java Microservices Developer, you will be working for our client, a leading player in the IT industry committed to building scalable, secure, and efficient enterprise solutions. You will contribute to the development and maintenance of complex Java-based systems, driving digital transformation and supporting business agility in a dynamic environment. This role offers new challenges for career growth and impactful projects for global enterprise success.

Your main responsibilities:

• Develop and maintain Java applications (Java 8+) within microservices architecture, ensuring high performance and scalability
• Collaborate on system enhancements, integrating new features based on detailed business requirements
• Design and implement solutions using Spring (including older versions) and Spring Boot, adhering to best practices
• Work on system integration using REST, SOAP, and message queuing systems, ensuring robust and secure communication
• Contribute to system migration initiatives, upgrading stacks to newer frameworks and technologies
• Document system designs with UML diagrams and other notation standards to support development and integration efforts
• Engage in troubleshooting, optimizing, and extending existing legacy codebases, maintaining high code quality

You're ideal for this role if you have:

• At least 5 years of professional experience in Java development within enterprise environments
• Strong proficiency in Java, including working with legacy codebases
• Extensive experience with Spring framework (any version) and Spring Boot
• Solid SQL knowledge and experience with database systems like Oracle
• Hands-on experience with microservices architecture and monolithic systems on application servers like Tomcat
• Familiarity with distributed systems architecture and system integration (REST, SOAP, queues)
• Knowledge of security mechanisms such as TLS/mTLS, certificates, and encrypted connections
• Working experience with Maven, Gradle, Git, and tools like SOAP UI, POSTMAN
• Ability to write bash or cmd scripts for automation tasks

It is a strong plus if you have: (optional)

• PLSQL knowledge
• Familiarity with JSF, JSP, or C++
• Experience with Ansible or other automation tools
• Insights into system security best practices
• Ability to interpret BPMN and UML standards, with problem-solving skills related to new feature development

Language Required for the role:

• Polish (Communicative proficiency)

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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.