Senior Data Modeller

Senior Data Modeller Job | Data | Halcyon Labs | Remote | No Fluff Jobs.

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– Senior
– Remote
– Offer valid until: 09.08.2026 (30 days left)
Must have
– SQL
– BigQuery
– ETL
– Data modelling
– Data warehouse
– Kimball
– Data Vault
– Star
– Snowflake
– Git
– English (B2)
Nice to have
– GCP
– Java
– Data Fusion
– CI/CD
Requirements description
– 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
Offer description
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 responsibilities
1. Design and develop SQL-based data transformation pipelines in BigQuery
2. Optimize query performance, cost efficiency and data processing workloads
3. Build, test and maintain ELT/ETL pipelines using Data Fusion or similar tools
4. Implement and maintain data models supporting business reporting and analytics
5. Collaborate with cross-functional teams in an Agile environment
6. Manage source code and development workflows using Git
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Job details
– Online recruitment
– Recruitment language: English&Polish
– Start ASAP
– Fully remote
– Fixed working hours
Equipment supplied
– Windows
– Computer: Notebook
Perks in the office
– Free coffee
– Playroom
– Free snacks
– Free beverages
– In-house trainings
– In-house hack days
– Modern office
– Free fruits
Benefits
– Home office
– Knowledge sharing
– International projects
– Integration events