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Software Developer Trainee

Job in Cleveland, Cuyahoga County, Ohio, 44103, USA
Listing for: ROCKWOOL
Part Time, Seasonal/Temporary, Apprenticeship/Internship position
Listed on 2026-02-25
Job specializations:
  • Software Development
    Software Engineer, Full Stack Developer
Job Description & How to Apply Below
We are seeking a Software Developer Trainee position based in our Poznań Office.

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

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

Join us and make a difference!

Your future team:

The Solutions & Marketing is a dedicated group of professionals focused on developing and maintaining the e-Gro application, designed to optimize agricultural processes through advanced technology and data analytics. Our team encompasses a diverse range of expertise, including software development, project management, cloud computing, customer support, and marketing. The Solutions & Marketing team is committed to leveraging technology to enhance agricultural productivity and sustainability, providing cutting-edge solutions to modern farming challenges.

What you will be doing:

Grodan (part of Rockwool) is currently looking for a Software Developer Trainee to join the team. The project is a web application for growers to forecast and optimize the growing process. You would be responsible for the implementation of features, production maintenance, planning releases and automation/optimization of processes. The offer is dedicated to future back-end and full-stack developers.

What you bring:

We are looking for a candidate who is likely a student in Computer Science, or other IT-related programs (we will consider any other background if you have relevant experience), and ideally has experience from a similar student job.

It will bring you in a good position to apply for the job if you:

* Current student status;

* Availability min. 25h/week;

* Understanding of OOP principles & good code design;

* Basic understanding of Python & JS syntax;

* Basic knowledge of the Spring and Spring Boot Framework, React Framework;

* Basic knowledge of Hibernate mapping framework ;

* Understanding and ability to use Java 8 - Streams;

* Basic knowledge of SQL language;

* Basic experience with Git versioning system;

* Ability to be able to understand and create the documentation in English is a must-have as part of the team is based in USA, Netherlands. You should be able to communicate speak and write in English on at least B1 level. On daily basis we use Polish but for documentation and with outside co-workers we use English.

Tech Stack:

* Back End:
Java 17+, Spring;
Front End:
React, Typescript;

* Frameworks:
Spring Boot, Spring Cloud, JUnit 4, Mockito, React, Redux, Formik, Highcharts;

* Authentication and authorization service:
Auth0;

* Tools:
Atlassian stack, Jira, Intelli

J;

* CI / CD:
Gitlab CI;

* AWS cloud services;

* Automated testing Playwright (unit, integration, e2e).

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!

Who we are:

We are the world leader in stone wool solutions. Founded in 1937 in Denmark, we transform volcanic rock into safe, sustainable products that help people and communities thrive. We are a global company with more than 12,200 employees, located in 40+ countries with 51 manufacturing facilities… all focused on one common purpose - to release the natural power of stone to enrich modern living.

Sustainability is central to our business strategy. ROCKWOOL was one of the first companies to commit to actively contributing to the United…
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