Experis Manpower Group

Discussion

Senior Java Developer/Analyst

Summary

Senior Java Developer/Analyst in Warsaw designs, implements, and modernizes a legacy TMS system, migrating it from Java 8 to Java 17 and Spring Boot while improving security and test automation.

  • Hybrid work from Warsaw (4 days per week from the Client's office, 1 from home)

  • Full availability in the Polish time zone

  • Polish language is required

  • English: at least B2


Tasks

  • Design and implementation of IT solutions based on analytical and technical documentation

  • Review and improvement of analytical documentation

  • Creation and maintenance of technical documentation

  • Technical upgrades and modernization of an existing system (including migration to Java 17 and newer technologies like Spring Boot)

  • Work with legacy code and monolithic architecture (Java 8-based system)

  • Reverse engineering based on: existing source code, functional and technical documentation, documented business processes, system UI and database access

  • Participation in transformation of a monolithic TMS system (POS terminal management) towards microservices architecture

  • Defining, designing and implementing automated test cases (including regression testing)

  • Identification of areas for test automation based on code and documentation

  • Work with system security improvements and vulnerability mitigation

  • Close cooperation with operational and development teams (~50% analytical work / ~50% development)

  • Working in Scrum (2-week sprints) in a small development team

  • Supporting system evolution and rollout to new markets (e.g. Germany)


Requirements

  • Very good knowledge of Java (8+) and object-oriented programming (experience with Java 17 is a plus)

  • At least 5+ years of experience (Regular/Senior level)

  • Experience in independent design, implementation, documentation and testing of application components

  • Strong analytical skills and ability to work with legacy systems

  • Very good practical knowledge of: Spring / Spring Boot, Hibernate / JPA, JEE, RESTful API design, Relational databases (especially Oracle)

  • Practical experience with: message queues (RabbitMQ), system integration and distributed systems, application servers (JBoss / WildFly), development tools: Maven, Git, GitLab, GitLab CI/CD, Jenkins, Nexus, Jira

  • Docker


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