On-call Trainee

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?

Wärtsilä Finland Oy, Delivery Centre Sustainable Technology Hub, is looking for an On-call Trainee for Operative Purchasing. The position is a temporary position for about 6 months (0-25 hours/week) and the location is Vaasa, Finland. 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, you will work in an assistive role to secure on-time material availability and to optimize the inventory levels together with operative purchasers and in collaboration with several different stakeholders with diverse expertise.

Your work will focus on assisting with these responsibilities:

• Ensure the right amount of required material to be available when needed
• Forecasting, requirement and delivery planning, ordering and order monitoring for an assigned component portfolio
• Manage and measure supplier quality level
• Manage document revisions for suppliers
• Maintain and develop material master data
• Optimize the inventory turnover
• Other tasks related to operative purchasing

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

• Studies and interest in Engineering, Economics, Supply Chain Management, or similar
• Good communication, teamwork, and social skills
• A systematic and proactive approach to working
• Good problem-solving skills
• Good PC skills (e.g. SAP, Power BI, advanced Excel)
• Fluency in spoken and written Finnish and English
• Interest in process development and data analytics is seen as an advantage

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 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 by 13th September.

For further questions related to this position, please reach out to Mari-Leena Matila, Team Manager, DC-STH Operative Purchasing,via phone +358 50 309 0617 on Wednesday 2nd or 9th of September during office hours. Kindly note that applications through email will not be recorded or responded to.

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

Last application date: 13/09/2026

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.