On-Call Trainee, Corporate Tax and Legal

Wärtsilä is an innovative technology company known for being a forerunner in the Marine and Energy markets. Every day, we – Wärtsilians – put our hearts and minds into turning Wärtsilä's purpose of enabling sustainable societies through innovation in technology and services into reality. Our ultimate aim is to provide increased value to both our customers and society. New, game-changing ideas and continuous improvement have been part of our DNA since 1834. Together, we can create new business opportunities and a more sustainable future that we can all be proud of.

We want to transition the world towards a decarbonised and sustainable future. By pushing the boundaries of engineering and technology, we can make it work. We are always on the lookout for future-oriented talent – want to join the ride?

We are looking for an On-Call Trainee, Corporate Tax and Legal, with the main responsibility of assisting our teams with various tax and legal matters. The position is estimated to involve approximately two working days per week. The preferred location for this position is Helsinki, Finland. We offer the possibility of hybrid work.

As an On-Call Trainee, you can work up to 25 hours per week. The person selected for this role needs to be a full-time student studying for a degree in Finland.

Your role and responsibilities

As an On-Call Trainee, Corporate Tax and Legal, your work will include tasks related to income tax, transfer pricing, international tax matters, indirect tax, as well as other tasks within the Group Tax team and tasks within the Corporate & M&A Legal team. You’ll be working as part of the Group Tax team and the Corporate & M&A Legal team in a truly international environment. You will probably start many of your tasks by checking Google Maps to see where the relevant company is located, as Wärtsilä has companies or branches in over 100 countries.

To succeed in the position, we expect you to have:

• Late-stage Bachelor’s or mid- to late-stage Master’s level studies in Economics and Business Administration, Law, or a similar field

• Interest in taxation and motivation to learn about income tax, transfer pricing, indirect tax, and international taxation

• Interest in gaining insight into and participating in corporate legal work

• Excellent communication and writing skills in English; Finnish or Swedish language skills are considered an advantage

• Some relevant previous work experience; experience in taxation and/or law is a plus but not mandatory

• An organised, focused, and proactive working style with a flexible and positive attitude

• Experience using various IT systems and tools, especially Word, Excel, and PowerPoint; experience with SAP is an advantage

What’s in it for you?

• The opportunity to learn about taxation and law, and the roles and responsibilities of the Tax and Legal functions of an international listed company

• Induction and training, professional development within the fields of tax and law, and valuable hands-on experience

• The opportunity to become a valued and integral member of the Group Tax team, with support for your studies and future career, as well as the opportunity to participate in and become integrated into the tasks of the Corporate & M&A Legal team
• Flexible working hours and the possibility to work partly remotely

Why you and us?

We at Wärtsilä believe in empowerment, ownership, and taking responsibility for our work. We support each other’s growth, and co-creation is the true basis of our innovation. We have the courage to see opportunities and take initiative.

We are authentic and honest, and we strongly believe that by being your own true self, you can accomplish so much more. We don’t always get it right the first time, and if mistakes are made, we make sure to learn and grow from them. We want everyone to voice their opinions freely. That is why we have built an environment that empowers you and everyone around you, and where you can feel safe and cared for. Are you eager to be part of this ambition?

We have an amazing team, and we are excited about our work and the impact it has on building sustainable societies. We are looking for a colleague with this shared passion for smart technologies and a sustainable future.

Contact & next steps

We hope to hear from you soon and receive your application via our Careers portal. We aim to keep you updated throughout the process.

For further information regarding this position, please reach out to Jouni Arpalahti, Director, Corporate Taxes, at jouni.arpalahti@wartsila.com regarding this position (only for questions from direct job applicants; applications by email will not be recorded or responded to).

Welcome to join us in shaping the decarbonisation of marine and energy!

Last application date: 27/11/2026

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.

This is Wärtsilä

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on www.wartsila.com.