Development Intern

About the role

We are looking for a part-time student worker to join our team (1 – 2 day(s)/week)  and work with modelling hydro power river sections.

In more detail, the following will be part of your areas of responsibilities:

• Develop and maintain Python-based models to simulate hydropower generation across river systems and cascaded hydro plants.
• Work with large datasets, including hydrological data, plant technical parameters, and operational histories.
• Collaborate with hydropower experts and analysts to refine model assumptions and ensure technical accuracy.
• Document code and workflows to ensure reproducibility and knowledge sharing within the team.
• Contribute to strategic studies and innovation projects related to hydro flexibility, climate adaptation, or hybrid operations.

About you

To succeed in this role, we see that you bring the following background:

• You are currently pursuing a degree in engineering, applied mathematics, computer science, renewable energy, or a related field. Preferably first or second year master student.
• You are comfortable in developing and maintaining Python-based optimization models.
• Great understanding of data modelling methodologies and optimization.
• You enjoy problem-solving and are curious about how complex systems like river-based hydropower can be modelled and optimized.
• Fluency in English, both written and spoken, preferable also Swedish.
• You are a team player who is confident to take responsibility for your own tasks.

We offer you

At Fortum, we believe in a better future and want to be involved in shaping it. Our workplace is a safe place, both physically and mentally. You will grow with professional colleagues, being trusted and free to challenge yourself. We offer comprehensive benefits, flexible working hours, and hybrid work model to support your productivity, development and wellbeing. We are committed to build diverse teams where everyone feels included and is treated equally.

More information about our culture and benefits can be found here.

Interested?

Submit your application latest by 24th of August 2025. Applications will be evaluated continuously from the 11th of August. Please note that this is initially a six month employment. If you have questions and would like to hear more about the position, please contact Lovisa Torfgård, lovisa.torfgard@fortum.com or Karar Al Obeid, karar.al.obeid@fortum.com.

Contact details to union representatives can be found on the bottom of this page.  

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 and our actions are guided by our ambitious environmental targets. We generate and deliver clean energy reliably and help industries to decarbonise their processes and grow. Our core operations in the Nordics comprise of efficient, CO2-free power generation as well as reliable supply of electricity and district heat to private and business customers. For our ~5 000 employees, we commit to be a safe, and inspiring workplace. Fortum's share is listed on Nasdaq Helsinki. fortum.com 

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