Java Backend Developer

inventYOU IT Consulting

full-time

Posted on: 9/17/2025

Origin: • 🇬🇷 Greece

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Mid-LevelSenior

CloudDockerGradleGroovyJavaKubernetesMicroservicesSQL

About the role

Design and implement Java-based back-end services and RESTful APIs
Apply Domain-Driven Design principles to structure and organize code within bounded contexts
Work with messaging systems using Java Message Service (JMS)
Utilize test-driven development practices and write automated tests using tools such as Groovy Spock and JUnit5
Apply reactive programming principles in developing scalable and event-driven applications
Build and deploy microservices using Quarkus or OpenLiberty
Manage containerized applications and services using Docker and Kubernetes
Develop and manage efficient SQL queries and integrate with relational databases
Use IBM API Connect for defining and exposing APIs
Collaborate closely with other team members and stakeholders while maintaining high coding standards

4+ years of professional experience in Java back-end development
Strong proficiency in Java Jakarta Edition, up to version 21
Experience with build tools such as Gradle
Familiarity with Java Message Service (JMS)
Hands-on experience with TDD, especially using Groovy Spock and/or JUnit5
Understanding of reactive programming and its real-world applications
Experience with Quarkus and/or OpenLiberty for building microservices
Knowledge of containerization and orchestration using Docker and Kubernetes
Proficient in writing complex SQL queries
Familiarity with IBM API Connect for API management
Comfortable working independently with minimal supervision, while also being a strong team player