Java Developer

Quick Facts

• Contract type: B2B

Description

You will work as a Java Developer supporting the maintenance and development of existing components using Java 21 and Java 8, along with Spring Framework 6 / Spring Boot 3. The role requires building integrations with Apache Camel and IBM MQ, processing XML messages (XSD, JAXB, XML validation), and designing and implementing REST APIs. You will also work with JBoss/WildFly, relational databases, SQL optimization, CI/CD pipelines, and application log troubleshooting.

Responsibilities

• Maintain and develop Java 8 components and new functionality using Java 21

• Develop services using Spring Framework 6 / Spring Boot 3

• Implement integration workflows with Apache Camel and IBM MQ

• Design and process XML messages using XSD/JAXB and XML validation

• Design and implement REST APIs

• Work with JBoss/WildFly application servers

• Create and optimize SQL queries for relational databases

• Diagnose issues and analyze application logs

• Use Git for version control and Jenkins/GitLab for CI/CD

Requirements

• Very good knowledge of Java 21

• Good knowledge of Java 8 for maintaining and developing existing components

• Experience with Spring Framework 6 / Spring Boot 3

• Knowledge of Apache Camel

• Experience with JBoss / WildFly

• Ability to design and process XML messages (XSD, JAXB, XML validation)

• Experience integrating systems using IBM MQ

• Knowledge of designing and implementing REST API

• Knowledge of relational databases

• Ability to create and optimize SQL queries

• Knowledge of Git version control

• Ability to diagnose problems and analyze application logs

• Knowledge of CI/CD tools (Jenkins, GitLab)

Benefits

• B2B contract

• Work performed also at the client office (Chmielna 89, Warsaw), minimum 2 times per month