Senior Data Modeller

Senior Data Modeller Senior Data Modeller

Kraków, PL, 30-302

Type of contract: B2B contract

Salary range: 155 - 205 PLN/H

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.

Your 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

Your skills

• 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