Data Modeler: Build Scalable Data Models & Pipelines

SNI; Województwo mazowieckie; On-site; PLN 120,000 - 180,000; Full time

Job summary

SNI is seeking a Data Modeler to design and maintain conceptual, logical, and physical data models, with focus on dimensional modeling and data mesh concepts. You will define ETL/ELT transformations, collaborate with analysts, data engineers, platform architects, and product owners across all delivery stages, and ensure performance, governance, and cloud cost-efficiency in data architectures.

Fluency in Polish and English is required; experience with Snowflake, Databricks, or similar platforms

Qualifications

• Minimum 2+ years of professional data modeling experience.
• Hands-on experience with dimensional modeling (Star/Snowflake).
• Strong SQL skills for complex data queries and validation.
• Knowledge of cloud data architectures and ETL/ELT pipelines.

Responsibilities

• Design and maintain conceptual, logical, and physical data models.
• Define, document, and govern data transformation logic and lineage.
• Collaborate with analysts, data engineers, architects, and product owners.
• Ensure models support performance, governance, and cost efficiency.

Skills

Dimensional modeling

SQL

Data warehousing

Data modeling

Analytical mindset

English proficiency

Education

Bachelor's degree in CS/IS

Tools

Erwin

PowerDesigner

dbt

Job description

SNI is seeking a Data Modeler to design and maintain conceptual, logical, and physical data models, with focus on dimensional modeling and data mesh concepts. You will define ETL/ELT transformations, collaborate with analysts, data engineers, platform architects, and product owners across all delivery stages, and ensure performance, governance, and cloud cost-efficiency in data architectures.

Fluency in Polish and English is required; experience with Snowflake, Databricks, or similar platforms