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Senior Java Developer

SQUARE ONE RESOURCES sp. z o.o.Lublin, Lublin, Poland

6 days ago

Job description

technologies-expected :

Java
Spring Boot
OpenAPI
REST APIs
Kubernetes

technologies-optional :

Camunda

Kafka

about-project :

A leading German company in the telecommunications and IT services industry, specializing in cutting-edge solutions such as web hosting, cloud computing, and internet services. The company is opening its European Technology Center in Poland to expand its capabilities and strengthen its team.

This project involves migrating JBoss systems to a modern Spring Boot cloud environment. The new joiner will be part of a team focused on modernizing and streamlining legacy Java applications

Work Model : Hybrid work – 3 days a week from the office in Warsaw, Poznań or Lublin.

responsibilities :

Migration of applications from Wildfly to Spring Boot architecture, including removal of outdated components such as EJBs and JMS

Redesigning processes and migrating them to Camunda 8 BPMN

Integration with other processes using Kafka

Development of comprehensive integration test suites to ensure functional parity of migrated services

Setting up Kubernetes namespaces, defining access rules, and configuring deployments according to platform standards

Creation and optimization of CI / CD pipelines

Adaptation and enhancement of Camunda BPMN processes to align with the new Spring-based architecture

Definition and extension of OpenAPI specifications, supporting contract-first development and enabling efficient API documentation and client generation

requirements-expected :

Minimum 5 years of experience working with Java and Spring Boot

Practical knowledge of SQL databases and REST APIs

Experience with OpenAPI and Kubernetes (from a usage perspective)

Strong design skills for process recreation

Good communication skills in English (B2+)

offered :

Long-term collaboration

B2B contract

Hybrid work model (3 days a week from the office in Warsaw, Poznań or Lublin)

Equipment provided by the client for work

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Senior Java Developer • Lublin, Lublin, Poland

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