Summer Power is Wärtsilä`s official summer trainee program for students studying for a degree in Finland. During summer 2026 we employed 670 summer trainees in Vaasa, Turku and Helsinki. With Wärtsilä, you will work in a company that values you, supports your growth and is passionate about innovation & sustainability.
The application period for Summer Power 2027 is 4.1.2027 - 14.2.2027. The job post will be published in our Careers page. All applications must be submitted through the recruitment system. We do not approve applications nor CVs via e-mail.
Our hiring managers will get access to candidates during the second week of January. They start screening suitable candidates based on the applications. Candidates matching the need of the team will be invited to a job interview.
Each hiring manager have their own schedule for the recruitment, but the goal is that all hiring decisions would be made by the end of March. We'll send couple of update e-mails to all candidates during the recruitment period.
Our summer trainee period is 1.5.-20.9.2027. The duration of the trainee employment depends on the need of the team and varies between 3-5 months.

To be eligible for the Summer Power program, you must be a full-time student studying for a degree in Finland. This means that you can be studying:
- in vocational education institute (ammattikoulu) for a profession
- in upper secondary school (lukio) for a matriculation examination
- at university or university of applied sciences for a bachelor´s / master´s degree
English is our official working language, and most Summer Power positions do not require Finnish and/or Swedish. However some roles may have additional language requirements depending on the nature of the work.
Please note that no relocation costs nor immigration support are available for trainee positions.
As a summer trainee in Wärtsilä, you’ll get hands-on experience in an international technology company and the opportunity to put your studies into practice. With trainee positions across a wide variety of teams, your tasks will depend on your role, skills and interests.
Turn your potential into success. At Wärtsilä, you’ll have opportunities to grow professionally, learn from experienced colleagues and build skills for your future. And while you’re growing, you can make an impact too: bring your ideas, challenge the way things are done and contribute to meaningful change in our industries and society.
We want everyone to feel welcome and encouraged to be themselves at work. You’ll become part of a diverse working environment where collaboration, different perspectives and learning from one another are valued.
As part of our Summer Power community, you’ll have opportunities to meet other trainees, grow your network and make new friends through activities and events organized throughout the summer.
We’re looking for motivated students who are eager to learn, take initiative and solve challenges together. You don’t need to have all the answers. We value curiosity, fresh perspectives and a willingness to grow and contribute.
If you have any questions, please check the Q&A first. For more support, please contact us via e-mail: [email protected].