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
ETL Developer
ETL Developer