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December 17, 2025

Data Engineer / SQL Specialist

Mid • Remote

Gdańsk, Poland

Start: ASAP

Contract: B2B 12 months + prologantions

Work mode: 100% remote

Project language: English

Recruitment process: 1 screening + 2 interviews


Summary:

The primary objective of the Data Engineer / SQL Specialist role is to enhance the organization's analytical capabilities by developing and managing SQL-based data solutions on the Databricks platform. This position aims to ensure robust data modeling and transformation processes that meet business needs.


Responsibilities:

  • Develop and maintain SQL-based data pipelines and transformation logic on Databricks.

  • Design, implement, and optimize star and snowflake schemas for analytical workloads.

  • Write and tune advanced SQL queries for reporting, aggregation, and data validation.

  • Collaborate with data engineers and analysts to ensure data models meet business needs.

  • Work with structured and semi-structured data from multiple sources.

  • Contribute to improving data quality, performance, and maintainability.


Must Haves:

  • Solid experience with SQL (including analytical functions, joins, subqueries, CTEs, window functions, etc.).

  • Practical experience with Databricks, Spark SQL, or similar distributed SQL engines.

  • Strong understanding of data modeling principles, particularly star and snowflake schemas.

  • Experience with relational databases (e.g., PostgreSQL, SQL Server, or similar).

  • Familiarity with ETL/ELT concepts and best practices.

  • Ability to work independently and collaboratively within a data team.


Nice to Have:

  • Exposure to dbt, Delta Lake, or data warehousing concepts.

  • Basic knowledge of Python or PySpark.

  • Experience with cloud platforms (Azure, GCP, or AWS).