ETL Developer

Location: Gdańsk / Gdynia / Warsaw (2 days per week in the office)

Tasks

• Design, build and maintain scalable ELT pipelines

• Develop and optimize PLSQL queries and database objects for high‑performance data storage in Oracle

• Write Python‑based data engineering scripts to process data

• Implement CI/CD pipelines for data infrastructure and workflow automation

• Understand and work with database change management

• Work with one or more major cloud vendors

• Integrate and manage a modern data stack

• Monitor, debug and optimize data workflows and infrastructure performance

• Ensure data quality, governance and compliance with good practices

Requirements

• 10 years of experience

• Proficiency in designing OLAP systems and using techniques such as STAR schema or denormalization

• Strong Python and PLSQL skills

• Experience with ELT/ETL development using GUI‑based tools (e.g., IBM Datastage, ADF, Stitch, Matillion)

• Knowledge of Oracle, MSSQL and Snowflake databases

• Understanding of DevOps and CI/CD, including Git, Docker, Kubernetes, Terraform, and tools such as Jenkins, Bamboo or Azure DevOps

• Experience with test automation (Robot, Selenium) and understanding of different test scenarios

• Strong familiarity with version control techniques (Git, GitHub, GitLab)

• Experience with workflow orchestration tools (Airflow, Prefect)

• Knowledge of streaming and batch processing involving Kafka

Offer

• Multisport card

• Private healthcare

• Access to an e‑learning platform

• Group life insurance