Full Stack Developer (Java, Spring Boot, Angular)

DATAGROUP Polska Sp. z o.o. is looking for a skilled Full Stack Developer to support our ongoing technology refresh and application modernisation initiatives. This is a mid-level position offering remote flexibility and the opportunity to work on forward-looking IT projects that involve modernising legacy systems and migrating to modern frontend, backend and open-source database technologies.

• Design and implement robust, scalable, and efficient Java-based frontend components using Angular as well as backend services using Java Spring Boot.
• Contribute to the migration of an existing legacy application from Java Struts to Java Spring Boot.
• Support the modernisation of the frontend by implementing new application screens and user interfaces in Angular.
• Analyse the existing Java Struts application and understand how data is currently retrieved from the Oracle database.
• Map existing Oracle-based data access logic to the new PostgreSQL database structure and ensure that the required information can be retrieved correctly in the new Spring Boot application.
• Collaborate with cross-functional teams on application modernisation and technology refresh efforts.
• Ensure code quality, performance, and maintainability throughout the development lifecycle.

This project is carried out by a joint team from DATAGROUP Business Solutions GmbH and DATAGROUP Polska Sp.z o.o. Both entities share responsibility for data protection. Applicants can exercise their data protection rights with either of the involved entities.

We’re seeking someone with a strong technical foundation and a proactive mindset. You should have:

• Solid experience in Java development and object-oriented programming.
• Strong practical experience with Java and Spring Boot, especially in backend application development and RESTful services.
• Good experience with Angular for frontend development.
• Experience with legacy Java technologies, ideally Java Struts, and the ability to understand and migrate existing application logic.
• Good understanding of database access patterns and SQL.
• Experience with Oracle database and ideally some exposure to PostgreSQL.
• Ability to analyse existing Oracle-based data structures and map the required information to a new PostgreSQL-based environment.
• Good understanding of RESTful APIs, Git, and modern development practices.
• Strong communication skills in English; German is a plus.

You’ll be working alongside other specialists in related areas. If you have experience or interest in any of the following, it’s a big advantage:

• Google Cloud Platform (GCP) – BigQuery, Astronomer, CloudSQL
• IBM Cloud Pack for Data (CP4D) – especially for ETL and DataStage migration
• Scheduling systems like Airflow or Astronomer
• Experience in agile development environments

At DATAGROUP Polska Sp. z o.o., we value our employees and offer a comprehensive benefits package to support your professional and personal growth:

• Flexible working hours and remote work options (Poland only).
• Open and cooperative corporate culture and a trusting working atmosphere
• Flat Hierarchies and Short Decision Paths
• Individual training opportunities and interesting technical challenges
• Social benefits