Junior Data Engineer (M/F/D)

We are currently looking for three new members to join our Data Engineering team. Depending on your experience and skills, you can join us at Junior, Mid or Senior level.

As a Junior Data Engineer at VELUX, you will help ensure that our data pipelines run reliably and bring new data sources into our platform. You will investigate and troubleshoot issues, identify their root causes and implement fixes. You will also build the first layer of data models on top of the sources you connect.

This role is a great fit for someone who is curious, analytical and enjoys understanding why something goes wrong rather than simply fixing the symptoms.

Meet your future team:

Our team is based across Warsaw and Hørsholm and consists of 8 members. We work in English and are an international, open-minded and results-driven team that embraces change. We value open and direct communication, transparency and collaboration. We keep communication focused, practical and to the point.

Your responsibilities:

At VELUX, we are moving away from a centralised data model towards an approach where data ownership is embedded across the business. Teams in Sales, Marketing, Supply & Operations and other areas are taking responsibility for their own data products, following the standards and guidelines defined and maintained by our team. This approach is known as data mesh.

The data pipelines and source data you will be responsible for form the foundation on which these teams build and develop their data products.

Our data platform, Reflect, is built on Snowflake and dbt. We use GitHub for version control, pull request reviews and CI/CD, while Prefect and Azure Data Factory support our data ingestion processes. Our engineers also work with AI coding agents such as Claude Code and Codex as part of their everyday workflow.

• Monitor the data pipelines, investigate failed runs and failing tests, and correct the defects you find
• Run backfills and reprocessing when source data arrives late or changes
• Reduce the number of repeat failures by finding and removing the cause
• Build new source connections in Prefect incl. databases, APIs and external data providers
• Build the staging models in Snowflake with dbt on top of the sources you connect. Tests, documentation and freshness checks are part of this work
• Review pull requests and documentation from colleagues
• Take ownership of a workstream in our 2027 roadmap, with a senior colleague to support you

What you will bring into the organization:

• Good working knowledge of SQL and Python.
• Hands-on experience working with real-world data in a professional environment. This could be through an internship, a first job or a project involving real production data, rather than tutorials or bootcamps.
• Full professional proficiency in English, both spoken and written.

The following would be an advantage:

• Some experience with a cloud data warehouse, such as Snowflake or an equivalent platform.
• Familiarity with dbt or another data transformation tool.
• Some experience with a data orchestration tool, such as Prefect.
• Experience working with Git, pull requests and code reviews in a team environment.
• Familiarity with AI-powered coding environments, such as Claude Code or Codex.

Our offer:

• Cooperation based on trust and respect for the employee
• Annual bonus
• Employee Pension Scheme, paid in full by the employer
• Well-being package: Multisport card or holiday subsidy, life insurance, lunch card and gift cards
• Private medical care, with telemedicine and rehabilitation
• Support from the Employee Foundation
• Hybrid work 3 days in the office
• Flexible working hours
• Modern office with daylight, fresh air and high-quality equipment. Parking spaces for employees
• Massages in the office
• Referral programme
• Employee discount on VELUX products

Ready to apply?  

Learn more about the VELUX Group online at www.velux.com where you can read more about working at our company and what to expect of our recruitment process.  

We look forward to receiving your application and CV as soon as possible. We are conducting interviews on an ongoing basis until we have the right match.  

All inquiries will be treated confidentially.  

About VELUX  

In the VELUX Group, we offer you a world of opportunities and the chance to create a bright future. From the forefront of the roof window category, we enable those who live, work and play under the roof transform their spaces and live a healthier everyday life with more daylight and fresh air.  

The VELUX Group is an international, family-owned business with strong financial roots and each year we can create real impact by reinvesting in society, our employees and planet through our foundations. With 20 production companies in 12 countries and sales companies in 37 countries, our products are widely available. We employ around 12,000 people, and our company is headquartered in Denmark. Alongside the rest of our values, “courage” and “mutual respect” define our actions every day and how we wish to contribute to the world. 

Equal Opportunity Employer  

At VELUX, we believe in fostering a diverse workplace for everyone to thrive, develop, and perform at their best, and where you feel welcome, respected, and valued. We are committed to providing equal opportunities for all - whether you are applying for a role or already a part of VELUX. That means we recruit, hire, train, and promote people based on their skills and potential without regard to race, color, religion, sex, age, neurodiversity, disability, protected veteran status, national origin, sexual orientation or any other basis prohibited by applicable law.   

 We value diversity and strive to ensure that our employment decisions are fair and inclusive, focusing only on what truly matters: your qualifications and how you can contribute to our shared mission and success.