Senior Data Modeller

What will you do? You will join a data-focused team responsible for building and developing modern data platforms on Google Cloud Platform. The role combines hands-on development of data transformation pipelines, data modeling, optimization of BigQuery solutions, and collaboration with stakeholders to deliver scalable, reliable, and cost-efficient data products.
Requirements:
3+ years of hands-on experience with SQL querying and BigQuery optimization Experience building and implementing ELT/ETL data pipelines Knowledge of data modeling and data warehouse concepts Understanding of data architectures such as Kimball, Inmon or Data Vault Experience with Star, Snowflake, Medallion or Data Vault schemas Proficiency with Git version control Experience working in a DataOps environment Experience working in Agile teams using Jira and Confluence Willingness to travel regularly to Krakow (4–6 days per month) Nice to have Data Vault modeling experience Experience with GCP Data Fusion, CDAP or similar data integration tools Experience designing data ingestion pipelines from APIs, SFTP and structured data sources Knowledge of data contract best practices Java development, testing and deployment skills Experience building custom plugins for Data Fusion Knowledge of CI/CD and continuous testing for cloud data solutions
Must have: SQL, BigQuery, ETL, Data modelling, Data warehouse, Kimball, Data Vault, Star, Snowflake, Git
Nice to have: GCP, Java, Data Fusion, CI/CD
Daily tasks: - Design and develop SQL-based data transformation pipelines in BigQuery
– Optimize query performance, cost efficiency and data processing workloads
– Build, test and maintain ELT/ETL pipelines using Data Fusion or similar tools
– Implement and maintain data models supporting business reporting and analytics
– Collaborate with cross-functional teams in an Agile environment
– Manage source code and development workflows using Git
– Support data quality, data integrity and DataOps best practices
– Participate in technical discussions, problem solving and continuous improvement activities