Java Developer

Join the Kubo Team – We're Hiring Java Developers!

Kubo is currently looking for talented Java Developers to join an exciting project for a leading company in the logistics industry. This is a unique opportunity to take part in modernizing a key business system – we're rebuilding an existing platform using Java technologies to ensure scalability, performance, and future readiness.

If you're passionate about clean code, system architecture, and creating reliable solutions that matter – we'd love to hear from you!

Your responsibilities

• Use Domain-Driven Design (DDD) principles to model business logic, and ensure reliable data handling with PostgreSQL and effective transaction and concurrency control in distributed systems.
• Build robust, cloud-native applications using Java SE and Jakarta EE (JPA, CDI, EJB, JAX-RS), adhering to modern development standards and best practices.
• Develop high-availability, asynchronous systems using JMS, Kafka, or RabbitMQ, and apply patterns such as SAGA and eventual consistency to handle complex workflows.
• Design and maintain self-contained systems and RESTful APIs following microservices principles, using tools like Quarkus or MicroProfile.
• Work closely with cross-functional teams in agile environments (Scrum/Kanban) to deliver solutions on cloud platforms like AWS, Azure, or GCP, using CI/CD pipelines and container technologies (Docker, Kubernetes).

Our requirements

• Hands-on experience of industry standard dev tools like source code management (Git), CI/CD (Jenkins, ArgoCD) and runtime tools (Docker / Podman).
• Proficiency in Java SE, knowledge of Jakarta EE specifications, including JPA (EclipseLink), CDI, EJB, JAX-RS and Annotation Processing (Jakarta EE 10). Knowledge of Jakarta EE containers (Websphere Liberty or similar).
• Understanding of cloud-native development practices, including containers (Docker, Kubernetes) and serverless architectures.
• Familiarity in asynchronous programming paradigms using technologies like JMS, Kafka, or RabbitMQ.
• Familiarity with patterns to deal with asynchronous complexity like SAGA, command-response-pattern or inbox / outbox.
• Familiarity with designing and implementing solutions following DDD principles.
• Knowledge of distributed system patterns like eventual consistency.
• Experience in developing systems for high availability, scalability, and resilience in a cloud environment.
• Proficiency in implementing and developing RESTful APIs.
• Knowledge of self-contained systems or microservices architecture and tools like Quarkus or MicroProfile.
• Experience with relational databases (PostgreSQL).
• Understanding of central data modeling, transaction handling and concurrency control concepts.
• Knowledge of data storage best practices in distributed and asynchronous systems.

Conditions

• Work model: hybrid in Gdańsk
• Salary: 150 - 180 PLN net/h
• Employment type: B2B
• Benefits: medical care, life insurance, trainings, Multisport card

Recruitment steps

• Phone call with Recruiter (20 - 30 min.)
• Interview with the client
• Feedback and decision