Data Engineering Trainee

We are seeking a Data Engineering Intern position based in our Poznań location to join the Data Science & Engineering team.

Ready to help build a better future for generations to come? 

In an ever-changing world, we owe it to ourselves and our future generations to live life responsibly. At ROCKWOOL, we work with dedication to enrich modern living through our innovative stone wool solutions.

Join us and make a meaningful difference!

Your future team 

In ROCKWOOL, we enrich modern living through innovative stone wool solutions. We are looking for a motivated Data Engineering Intern to join our team and gain hands-on experience working with modern data platforms. This is a unique opportunity to work with both Snowflake and Databricks in a real-world, enterprise-grade environment – supporting analytics, data pipelines, and data-driven decision-making on a global scale.

We are on a journey to leverage AI, digitalization, automation, and data to transform our business. You will join a collaborative Data Science & Engineering team working across Denmark and Poland, alongside experienced data engineers, data scientists, and ML engineers. As an intern, you will be mentored and gradually given ownership of tasks, with the opportunity to contribute meaningfully to real projects from day one. 

What you will be doing 

As a Data Engineering Intern, you will primarily support our Snowflake-based data platform in the marketing & sales domain while also getting exposure to our Databricks-based Factory Data Platform. Your work will span data ingestion, transformation, modeling, and pipeline development. Expect a mix of learning and doing – you'll contribute to production work while building your skills in a supportive team environment. 

Moreover, you will:

• Assist in enhancing and maintaining the Data Lakehouse on Snowflake with new datasets 

• Support the creation and organization of data models and transformations using DBT 

• Help organize and improve data pipelines across multiple stages 

• Contribute to automation of data processes to smoothly serve data to stakeholders 

• Assist with monitoring, alerting, and logging solutions on our Databricks-based Factory Data Platform 

• Participate in investigating and resolving common data pipeline issues 

• Collaborate with business stakeholders to gather requirements and understand use cases 

• Document data processes, schemas, and workflows 

What You Bring 

Must Have: 

• Currently pursuing Bachelor's or Master's degree in Computer Science, Data Science, Software Engineering, Information Systems, or a related field 

• SQL – solid foundational knowledge (writing queries, joins, aggregations) 

• Python – basic programming skills 

• Basic understanding of relational databases 

• English B2+ proficiency (working language of the team) 

• Eagerness to learn and a proactive, can-do attitude 

• Good communication skills and willingness to collaborate in an international team 

Big Advantage: 

• Familiarity with Snowflake or any cloud data warehouse 

• Familiarity with Databricks or Apache Spark (even from coursework) 

• Exposure to DBT (data build tool) 

• Basic knowledge of cloud platforms (Azure, GCP) 

• Exposure to Git/GitHub for version control 

• Understanding of data modeling concepts (star schema, snowflake schema, etc.) 

• Familiarity with any BI/visualization tool (e.g., PowerBI, Streamlit) 

• Ability to use LLM tools to optimize your work (ChatGPT, GitHub Copilot, etc.) 

Nice to Have: 

• Familiarity with Docker or containerization concepts 

• Exposure to Airflow, Kafka, or other orchestration/streaming tools 

• Basic knowledge of networking concepts 

• Exposure to Jinja templating 

• Experience with Azure or GCP services  

Others: 

• Ability to work in Scrum or Kanban using Jira (or willingness to learn) 

• Curiosity and ability to ask the right questions 

• Willingness to work independently on tasks after initial guidance 

• Openness to working in an international team across multiple time zones 

What we offer

By joining our team, you become a part of the people-centric work environment of a Danish company. You will gain valuable experience in one of our teams which will be a good start in your professional life.

Moreover, we offer to our interns:

• team building events
• flexible working hours
• hybrid style of working  

Also you will work in a modern office full of comfort zones and activity places in Nowy Rynek building, just a walking distance from the railway station and main Poznan universities located in the city center. We have prepared an onboarding programme for you. This will give you the perfect opportunity to learn the process details and connect with the new team – a close-knit group of people who are always ready to help each other out.

It could be a great opportunity to start your professional career with ROCKWOOL!

Ready to apply?

If you recognize yourself in this profile and challenge, we kindly invite you to apply with CV written in English.

We strongly encourage you to include a link to your GitHub profile with your application. Whether it's university coursework, personal hobby projects, hackathon submissions, open-source contributions, or even private repositories you can share – we value practical experience and initiative over polished CVs. Past projects, even small or private ones, are an important part of how we assess candidates for this role. If your repos are private, feel free to describe them in your cover letter or grant us temporary access.

Who we are

At ROCKWOOL, everything we do is based on releasing the natural power of stone to enrich modern living. We help our customers and communities tackle many of today’s biggest sustainability and development challenges, from energy consumption and noise pollution to fire resilience, water scarcity and flooding. Our product range reflects the diversity of the world’s needs, while supporting our stakeholders in reducing their own carbon footprint.

Stone wool is a recyclable, versatile material that forms the basis of all our businesses. With ~11,800 dedicated colleagues in 37 countries and sales in more than 120, we are the world leader in stone wool products, from building insulation to acoustic ceilings, external cladding systems to horticultural solutions, customised stone wool insulation components for other manufacturers’ products and systems (OEM), to insulation for the process industry and marine & offshore.

Sustainability is central to our business strategy.  ROCKWOOL was one of the first companies to commit to actively contributing to the United Nations Sustainable Development Goals (SDG’s) framework and are actively committed to 11 SDGs, including SDG 14, Life Below Water.  Through our partnership with the One Ocean Foundation and in connection with our sponsorship of the Denmark SailGP team, we will help raise awareness around ocean health challenges in an effort to accelerate solutions to protect it.

Diverse and Inclusive Culture

We want all our people to feel valued, respected, included and heard. We employ 79 different nationalities worldwide and are committed to providing equal opportunities to all employees, promote diversity, and work against all forms of discrimination among ROCKWOOL employees. At ROCKWOOL, you will experience a friendly team environment. Our culture is very important to us. In fact, we refer to our culture as “The ROCKWOOL Way”. This is the foundation in which we operate and is based upon our values of ambition, responsibility, integrity and efficiency.