On-Call Trainee, Project Purchasing

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 to join the Project Purchasing team. As an On-Call Trainee, you can work up to 25 hours per week. The preferred location for this position is Vaasa, Finland, and the selected candidate must be a full-time student studying for a degree in Finland. This is a fixed-term role for 10 months, and we also offer the possibility to work in a hybrid model.

Your role and responsibilities

As an On-Call Trainee, Project Purchasing, your work will include purchasing-related tasks such as order creation and follow-up, inbound transport bookings, and invoice handling. You’ll be working as part of our energetic Project Purchasing team in Marine Power Supply, supporting the purchasing of engine auxiliaries and propulsion equipment as needed. Your stakeholders are located worldwide.

Your work will focus on the following responsibilities:

• Handling all purchasing-related activities (purchasing, follow-up, confirmations, inbound transport, and invoice handling)
• Ensuring that all components and documentation are available at the required time at the chosen subcontractor, warehouse, or customer in order to secure on-time delivery
• Acting as a stand-in and providing support for colleagues
• Communicating project status updates on a weekly basis with all involved stakeholders and collaborating with suppliers and stakeholders worldwide to resolve day-to-day issues
• Addressing price increases that are not in line with the project scope and taking action where needed
• Monitoring project orders and measuring quality levels, delivery reliability, costs, and lead times
• Verifying the alignment of long- and short-term forecasts with Supply Chain Management

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

• Experience with SAP S/4HANA, especially in purchasing and invoice handling, and knowledge of Basware is considered an advantage
• Ongoing studies in a relevant field at a university or a university of applied sciences
• Excellent communication skills in English and in Finnish or Swedish

Why you and us?

We at Wärtsilä believe in empowerment, ownership and taking responsibility of 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 to find a colleague with this shared passion for smart technologies and a sustainable future.

Contact & next steps

We hope to hear from you soon by submitting your application through our Careers portal. As we are looking to find a new colleague as soon as possible, we will start contacting and interviewing applicants immediately and fill the position as soon as we find a suitable candidate. We aim to keep you updated throughout the process.

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

Last application date: 28/07/2026

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.