Software Developer (Java, Oracle & PostgreSQL)

DATAGROUP Enterprise; Kraków; Hybrid; PLN 120,000 - 180,000; Full time

Job summary

A leading IT service provider in Kraków is seeking a skilled Java/Oracle Developer to support technology refresh and migration initiatives. The role offers remote flexibility and involves modernizing legacy systems. Ideal candidates have robust Java development skills and experience with Oracle PL/SQL. This position includes benefits like flexible hours and a supportive corporate culture.

Benefits

Flexible working hours

Remote work options

Individual training opportunities

Comprehensive social benefits

Qualifications

• Solid experience in Java development and object-oriented programming.
• Strong skills in Oracle PL/SQL and ideally some exposure to PostgreSQL.
• Good understanding of modern development practices.

Responsibilities

• Design and implement robust, scalable, and efficient JAVA-based frontend.
• Collaborate on application modernization and cloud migration efforts.
• Ensure code quality and performance throughout the development lifecycle.

Skills

Java development

Oracle PL/SQL

PostgreSQL

RESTful APIs

Git

English communication

Tools

IBM DataStage

Google Cloud Platform (GCP)

Airflow

Job description

DATAGROUP in Krakau or Hybrid

DATAGROUP is one of the leading German IT service providers - thanks to our dedicated team. Our passion for technology and innovation enables us to provide our customers with reliable IT services. With us, you can expect a fascinating and challenging field of activity in an innovative company. An open corporate culture, individual training opportunities and diverse development opportunities mean a workplace tailored to you and your life.

Contact Person: Bartlomiej Musial

We’re 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.

Responsibilities

• 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

Benefits

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.