(Senior) Expert, Power Systems

Wärtsilä Energy leads the transition towards a 100% renewable energy future. We help our partners to accelerate their decarbonisation journeys through our market-leading technologies and power system modelling expertise. These cover decarbonisation services, future-fuel enabled balancing power plants, hybrid solutions, energy storage and optimisation technology, including the GEMS Digital Energy Platform.

Did you know Wärtsilä has delivered 79 GW of power plant capacity and more than 130 energy storage installations 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?

We are looking for a (Senior) Expert, Power Systems to strengthen our expertise in power systems, modelling and simulations, and grid code requirements. The preferred location for this position is Vaasa, Finland, but other Wärtsilä locations in Finland are also negotiable. We offer the possibility of hybrid work.

Your role and responsibilities

Wärtsilä Energy Business is developing and delivering competitive products and solutions for power systems across the globe. Our scope ranges from microgrids to large interconnected grids and from baseload to balancing markets.

Power systems worldwide are undergoing a major transformation, where the share of synchronous generation decreases in the generation mix. To be prepared for the transformation, regulators and grid operators are developing new requirements and novel market mechanisms. Wärtsilä Energy is committed to decarbonising electricity generation and enabling 100% renewable power systems.

The Power Systems team has a critical role in ensuring Wärtsilä’s market position, regulatory compliance, and technical credibility worldwide. The team’s work has a direct impact on product competitiveness, regulatory acceptance, and customer confidence across global markets.

As a (Senior) Expert, Power Systems, you will act as a technical authority in power systems, combining deep analytical work with leadership of development activities and collaboration with internal and external stakeholders. The (Senior) Expert, Power Systems will report to Jesse Asikainen, General Manager, Power Systems.

Your work will focus on these responsibilities:

• Perform modelling and simulation of Wärtsilä’s synchronous engine power plant solutions using tools such as PowerFactory and PSCAD
• Analyse test results, assess performance, and evaluate global requirements to ensure compliance and performance of Wärtsilä engine power plants
• Lead development activities, measurement campaigns, or technical project support cases as part of your daily activities
• Develop and improve ways of working by applying, for example, Python automation and the use of AI

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

• Master’s degree or higher in Power Engineering or a closely related field
• More than 6 years of experience in power system modelling, simulations, grid code requirements, and compliance
• Analytical mindset and ability to distinguish relevant information
• Experience with power system control, stability, and design
• Ability to translate and explain complex technical topics in a clear and understandable way for non‑technical audiences
• Ability to collaborate in a team and support other team members
• Fluent written and spoken English

Beneficial skills and abilities:

• Ability to write concise reports
• Ability to work in a consultative manner with internal and external stakeholders
• Experience with synchronous machines
• Experience with simulation automation using Python or similar tools and practical application of AI in engineering workflows

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 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 a 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. We aim to keep you updated throughout the process.

For further questions, please reach out to Jesse Asikainen, General Manager, Power Systems, at +358 40 631 4047 or via email at jesse.asikainen@wartsila.com for any questions related to this position (only questions from direct job applicants; applications submitted via email will not be recorded or responded to).

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

Last application date: 30/04/2026

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.

All new Wärtsilä employees in Finland will attend occupational health checks, including drug tests/screenings. When a person is located outside of Finland, the country's legislation is followed.

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.