Summer Trainee, New Nuclear Engineering

About the role

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! 

We are looking for a Summer Trainee to join the Engineering department of the New Nuclear business area. In this role, you will have a unique opportunity to be broadly involved in the development of Fortum’s new nuclear initiatives and gain hands-on experience in nuclear engineering and newbuild projects.

As a Summer Trainee, New Nuclear Engineering, you will participate in and support investigations and assessments related to:

• Plant technology and nuclear concepts
• Development of site infrastructure and site layouts
• Site development and engineering management processes

Your assignments may include:

• Participating in and contributing to investigations, assessments and tasks supporting plant technology development, licensing, site and site layout development, and engineering management tools and processes
• Analysing licensing requirements and non-nuclear requirements and their impacts on plant designs
• Supporting the development of technical requirements

The exact focus areas and assignments will be defined based on your background, experience and interests. The position is located at Fortum’s headquarters in Espoo, Finland.

About you

We are looking for committed and curious students who are eager to learn and contribute to the future of clean energy.

We hope that you apply for this position if you:

• Are pursuing a degree in Engineering (e.g. Energy Technology, Civil Engineering, Process Engineering, Construction or similar) and have completed at least three years of studies
• Have a good command of English, both written and spoken, as English is the main working language in our international environment
• Have strong communication and collaboration skills and enjoy working with different stakeholders in a multicultural setting
• Have a questioning mindset, strong sense of responsibility and motivation to learn new technologies and approaches
• Swedish language skills are considered an advantage, but not required

We offer you

At Fortum, we value our summer trainees and want to make your experience both meaningful and rewarding.

During the summer you will:

• Receive a thorough introduction to your tasks and be supported by experienced colleagues in the New Nuclear Engineering team
• Work with interesting and diverse tasks with real responsibility, contributing to ongoing nuclear newbuild studies
• Gain insight into nuclear technologies, licensing processes and large-scale energy infrastructure projects
• Enjoy flexible working hours and a hybrid work model, supporting your productivity and wellbeing
• Learn about Fortum, the energy industry and the sustainable solutions we are developing
• Network with other summer trainees across the company
• Gain valuable experience that can support your future career — many of our trainees continue with us after the summer as part-time employees or thesis workers

Our headquarters in Espoo is a smoke-free workplace, and we are committed to building diverse teams where everyone feels included and treated equally.

Read more

Read more about Summer Energy, our recruitment process and previous summer trainees’ experiences here:
Energetic summer job at Fortum | Fortum

Interested?

If this sounds like the perfect opportunity for you, please submit your application, including your CV and cover letter, through our recruitment system by 8 February 2026.

We’d love to hear your own voice in the cover letter — tell us who you are and what you would bring to the team. Please avoid AI-generated content so we can get to know you personally.

We will begin reviewing applications and interviewing candidates already during the application period, so please apply as soon as possible.

For further information about the role, please contact:

Nici Bergroth
Engineering Director, New Nuclear
📧 nici.bergroth@fortum.com

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

We are Fortum

Fortum is a Nordic energy company. Our purpose is to power a world where people, businesses and nature thrive together. We are one of the cleanest energy producers in Europe, guided by ambitious environmental targets. We generate and deliver clean energy reliably and help industries decarbonise their processes and grow.

With over 40 years of experience in nuclear operations and as a co-owner of several nuclear power plants in the Nordics, Fortum is now investigating opportunities in nuclear newbuild. Our ongoing studies focus on Finland and Sweden, covering both small modular reactors (SMRs) and conventional large reactors, and addressing commercial, technological, societal, legal and regulatory aspects.