Summer Trainee, Nuclear Services

Are you ready to power the future with a summer job at the heart of the energy industry? Apply now and join us for an impactful summer 2026! 

About the role

Nuclear Services unit offers nuclear related services and products to external customers. Organizationally, your position is in the Decommissioning and Disposal Services team of Nuclear Services, but you will collaborate widely within Nuclear Services and the nuclear business lines of Fortum. Your role is to support sales and marketing, based on the needs, by compiling and creating marketing and sales materials. Your main task during the summer is to produce high-quality reference project descriptions of Fortum’s past nuclear projects in text, MS PowerPoint and web page formats by interviewing the project managers and utilizing existing documentation. You may also help all the teams in Nuclear Services with other tasks.

In your role, you will work as a part of a dynamic team and get a good overview of B2B nuclear service business and learn about Fortum’s different projects in the nuclear industry.

About you

We’re looking for committed students or recent graduates eager to learn more and contribute to our purpose: to power a world where people, businesses and nature thrive together.

We hope that you apply for the position if you are:

• Pursuing a degree in engineering/natural sciences with interest towards business, or pursuing a degree in business/marketing/communications but comfortable working with technical topics and contents. Other university study backgrounds are also possible.
• Fluent in written and spoken English, as you will be producing materials in English.
• Good at writing clear, concise and grammatically correct texts. Being good with visuals is a benefit.
• Able to work independently and proactively as well as collaborate with others.
• Interested in both business and technical topics.

We offer you

We value our summer trainees and want to make your experience rewarding.

During the summer you will:

• Receive an introduction to your tasks and be supported by your team. Your position will be in the Decommissioning and Disposal Services team consisting of sales professionals and nuclear back-end experts. You will also collaborate largely with the other teams. We are committed to build a team where everyone feels valued. Mutual trust, believing in one another, and taking care of everyone’s well-being help us achieve better results.
• Work with interesting and diverse tasks with real responsibility. Your main responsibility will be to compile reference project descriptions of past projects that we have carried out. The descriptions will be used in marketing and sales.
• Enjoy a hybrid work model with flexible working hours, allowing you to balance remote and in-office work.
• Learn about our company, the energy industry, and the sustainable solutions that we are working with.
• Can network with other trainees.
• Gain valuable experience, that can lead to a career with us. Many of our trainees continue after the summer, working part-time while continuing studies or as thesis worker.

Read more about Summer Energy, our recruitment process and previous summer trainees’ experiences here.

Interested?

If this sounds like the perfect opportunity for you, send your CV and a cover letter through our recruitment tool by February 8th, 2026.  For further information about the role, please contact Otso Manninen, Director Decommissioning and Disposal Services, otso.manninen@fortum.com, +358407674168.

We encourage you to apply as soon as possible! We will start reviewing applications already during the application period. The job ad will close as soon as the right candidate is found.

Our recruitment process may vary depending on the role, but here’s what you can expect:

• Please apply with your CV/Resume and a cover letter.
• We use screening questions in the application form to ensure candidates meet the must-have requirements.
• For many roles, we include a digital assessment tool (Assessio) early in the process to make the process fair and unbiased, considering the high volume of applications.
• Please note that the first screening is based on the screening questions and the CV/Resume, so include all necessary information in them. Your cover letter will be looked in the later phases, if you pass the screening.
• Some applicants are invited to interviews either via Teams or in person, this stage includes at least one interview with the hiring manager.

The summer trainee period typically runs from May to September.

To be selected for the position, the applicant must go through background clearance and a health examination including drug testing.

We are Fortum
Fortum is a Nordic energy company. We generate and deliver reliable energy to our customers and the Nordic energy system while at the same time helping industries decarbonise their processes and grow. Our core operations comprise efficient and best-in-class low-carbon power generation, customer services, and heating and cooling. Fortum’s power generation is already 99% from renewable or nuclear sources with one of the lowest specific CO2-emissions in Europe. We are guided by our ambitious SBTi-validated emission reduction targets on our way towards net-zero by 2040. For our ~4,500 employees, we commit to be a safe and inspiring workplace. Fortum's share is listed on Nasdaq Helsinki. fortum.com