Software Developer (Java, Oracle & PostgreSQL)

DATAGROUP Polska Sp. z o.o.; Kraków; Remote; PLN 170,000 - 256,000; Full time

Job summary

A technology solutions company is seeking a skilled Java/Oracle Developer to support technology refresh initiatives in Kraków, Poland. This mid-level role offers remote working options and involves modernizing legacy systems, with responsibilities including designing Java components and collaborating on cloud migrations. Candidates should have a solid foundation in Java and Oracle PL/SQL, with good communication skills in English. Competitive benefits package included.

Benefits

Flexible working hours

Remote work options

Individual training opportunities

Social benefits

Qualifications

• Solid experience in Java development and object-oriented programming.
• Strong skills in Oracle PL/SQL with exposure to PostgreSQL preferred.
• Good understanding of RESTful APIs, Git, and modern development practices.

Responsibilities

• Design and implement robust Java-based frontend and Oracle PL/SQL procedures.
• Collaborate on application modernisation and cloud migration efforts.
• Ensure code quality and performance throughout the development lifecycle.

Skills

Java development

Object-oriented programming

Oracle PL/SQL

PostgreSQL

RESTful APIs

Git

English communication

German communication

Tools

IBM DataStage

Google Cloud Platform (GCP)

Airflow

Job description

Your responsibilities

DATAGROUP Polska Sp. z o.o. is looking for a skilled Java/Oracle Developer to support our ongoing technology refresh and migration initiatives. This is a mid-level position offering remote flexibility and the opportunity to work on forward-looking IT projects that involve modernizing legacy systems and migrating to cloud and open-source platforms.

• Design and implement robust, scalable, and efficient JAVA-based frontend as well as Java components and Oracle PL/SQL procedures for the ETL process.
• Contribute to the migration from Oracle to PostgreSQL.
• Collaborate with cross-functional teams on application modernisation and cloud migration efforts.
• Ensure code quality, performance, and maintainability throughout the development lifecycle.

Your profile

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 skills in Oracle PL/SQL and ideally some exposure to PostgreSQL.
• Familiarity with IBM DataStage is a plus.
• Good understanding of RESTful APIs, Git, and modern development practices.
• Strong communication skills in English; German is a plus.

Bonus skills

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 Pak for Data (CP4D) – especially for ETL and DataStage migration
• Scheduling systems like Airflow or Astronomer

Offer

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