Java DeveloperTechnical Analyst

Position: Java Technical Analyst
Location: Warsaw Poland (Hybrid 4 days onsite / 1 day remote)

We are looking for an experienced Java Technical Analyst to join a business-critical FinTech project supporting the development and modernization of a large-scale Terminal Management System (TMS) managing over 300000 payment terminals.

This role is ideal for someone who enjoys understanding complex enterprise systems analyzing existing code and delivering technical solutions within a legacy environment. You will work closely with developers architects analysts and business stakeholders to enhance and modernize mission-critical applications while ensuring system stability maintainability and performance.

• Analyze business and technical requirements to design effective application solutions.

• Review functional and analytical documentation and translate requirements into technical implementations.

• Prepare and maintain comprehensive technical documentation.

• Perform reverse engineering of existing applications using source code technical documentation databases and business processes.

• Analyze legacy applications and recommend technical improvements.

• Implement enhancements and modifications within existing Java applications.

• Support technical upgrades and modernization of legacy systems.

• Design develop and test application components following best engineering practices.

• Develop automated test cases and support application quality initiatives.

• Participate in system integrations using REST APIs and messaging technologies.

• Collaborate with cross-functional teams to troubleshoot and resolve technical issues.

• Contribute to improving application performance maintainability and security.

• Support continuous improvement of development processes and technical standards.

• 4 years of commercial experience with Java development.

• Experience working with large enterprise or legacy systems.

• Practical experience in technical analysis software design and system integration.

• Experience maintaining and modernizing existing applications.

• Strong knowledge of Java 8 and object-oriented programming.

• Hands-on experience with Spring Spring Boot Hibernate/JPA and JEE.

• Experience with RESTful APIs and distributed systems.

• Good understanding of RabbitMQ or similar messaging technologies.

• Experience with Oracle databases and SQL.

• Knowledge of application servers such as JBoss or WildFly.

• Familiarity with Maven Git GitLab GitLab CI/CD Jenkins Nexus and Jira.

• Experience creating technical documentation and working with reverse engineering activities.

• Strong analytical and problem-solving mindset.

• Ability to understand complex business processes and legacy architectures.

• Excellent communication and stakeholder collaboration skills.

• Ability to work independently while contributing to a collaborative team environment.

• Good written and spoken English (B2 or higher).

• Experience in FinTech banking or payment processing environments.

• Familiarity with distributed transactions and enterprise integration patterns.

• Experience with code quality and security scanning tools (e.g. Fortify Sonatype).

• Exposure to legacy system modernization projects.

• Delivering high-quality technical solutions for complex enterprise applications.

• Successfully analyzing and modernizing legacy code while maintaining system stability.

• Producing clear technical documentation and supporting knowledge sharing.

• Collaborating effectively with developers architects analysts and business stakeholders.

• Contributing to the continuous evolution of a large-scale mission-critical payment platform.