Junior Data Engineer: Build Pipelines & Data Models

VELUX; Warszawa; On-site; PLN 120,000 - 200,000; Full time

Benefits offered by this job

Annual bonus

Private medical care

Well-being package

Lunch card

Parking spaces

Job summary

VELUX is hiring a Data Engineer at Junior to Senior levels to join our Data Engineering team in Warsaw and Hørsholm. You will help ensure our data pipelines run reliably, bring new data sources into Reflect, and build the first layer of data models on top of connected sources.

You will work in an English-speaking, international team that values collaboration, openness and practical problem solving. Proficiency in SQL and Python is essential; experience with Snowflake, dbt, Prefect or similar

Qualifications

• Experience working with real-world data in a professional environment.
• Professional proficiency in English (speaking and writing).
• Interest or experience in data mesh concepts and modern data platforms.

Responsibilities

• Ensure data pipelines run reliably and investigate failed runs and defects.
• Build the staging models in Snowflake with dbt on top of connected sources.
• Build new source connections in Prefect (databases, APIs and external data providers).
• Review pull requests and documentation from colleagues.
• Take ownership of a workstream in the 2027 roadmap with senior support.

Skills

SQL

Python

Analytical mindset

English proficiency

Tools

Snowflake

dbt

Prefect

Azure Data Factory

GitHub

Job description

VELUX is hiring a Data Engineer at Junior to Senior levels to join our Data Engineering team in Warsaw and Hørsholm. You will help ensure our data pipelines run reliably, bring new data sources into Reflect, and build the first layer of data models on top of connected sources.

You will work in an English-speaking, international team that values collaboration, openness and practical problem solving. Proficiency in SQL and Python is essential; experience with Snowflake, dbt, Prefect or similar