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Vaasa, FI Drunen, NL Poole, Dorset, GB Göteborg, SE Trieste, IT Turku, FI Helsinki, FI Mulhouse Cedex 1, FR Rubbestadneset, NO Hamburg, DE

Function:  Research & Development
Job Category:  Research & Development

(Senior) Expert, Sustainable Fuels

Wärtsilä is leading the transition towards a 100% renewable energy future. We Wärtsilians help our customers unlock the value of energy transition by optimizing their energy systems and future-proofing their assets. Did you know Wärtsilä has delivered 74 GW of power plant capacity and more than 80 energy storage systems in 180 countries around the world?

In this fast changing world of energy, we are constantly on the lookout for future-oriented talent to join our team and to work towards enabling sustainable societies through innovation in technology and services - together. Want to join the ride?



Do you want to participate hands-on in the decarbonization of the global energy sector and help us drive the transition from fossil to sustainable fuels? Then joins us!

We are looking for a (Senior) Expert, Sustainable Fuels to the Technology organization within Wärtsilä’s Energy Business. In this strategically important role your main responsibility will be to lead the development of our sustainable fuel systems, with focus on hydrogen.


Location: The preferred location for this position is in our Finland offices in Vaasa, Helsinki or Turku, but also other European Wärtsilä offices are negotiable. Hybrid office and remote working is possible in this position. 


  • Define the system and equipment requirements for engine power plants operating on green hydrogen and other sustainable fuels
  • Collaborate with the cross-disciplinary expert network to establish harmonized process documentation
  • Participate in safety studies (HAZID, HAZOP, LOPA) as a fuel system expert in close cooperation with our dedicated safety team
  • Screen and validate equipment suppliers and 3rd party design partners in the field of sustainable fuels
  • Provide technical sales support, delivery project support and training within own field of expertise

Requirements for the position 

  • Master’s degree in engineering, preferably within process engineering
  • 3+ years’ experience within process or system engineering
  • Experience in hydrogen, natural gas or ammonia system design
  • Good written and oral skills in English
  • Ability to communicate complex topics to stakeholders of various background
  • Simulation tool experience (Aspen, MATLAB/Simulink)
  • Solution-oriented mindset
  • Problem-solving skills

Why you and us?  
You get to make a difference. Innovation and sustainability are important for us. Every day, we - Wärtsilians - put our hearts and minds into enabling sustainable societies through innovation in technology and services into reality.  

You are valuated – as your true self. We pride ourselves with a flat organisational culture where driven individuals are empowered and encouraged to pursue new ideas. We value diversity and are committed in supporting inclusive work community.  

Your growth is supported. The Wärtsilä community has your back when it comes to development opportunities – all within a global company with future career opportunities across a vast range of roles. 

Contact & next steps 
Submit your application before the deadline 12.2.2023 through our Careers portal. Applications through email will not be considered. After submitting your application you’ll receive a confirmation email. We try our best to get back to everyone within 2-3 weeks after application deadline.  


In case of any questions, reach out to  

Rasmus Teir, General Manager, Wärtsilä Energy Business Technology +358505916244



Last application date: 12/02/2023 

All new Wärtsilä employees in Finland will attend occupational health check, including the drug test/screening. The legislation of the country followed when person is located outside of Finland.


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. 


This is Wärtsilä 

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 17,000 professionals, in more than 200 locations in 68 countries, shape the decarbonisation transformation of our industries across the globe. Read more on