System Engineer

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 System Engineer. You will be a part of the growing Project Delivery Team and report to the Senior Manager, This position is permanent and the ideal location is Vaasa, Finland, however Helsinki / Turku could also be considered and we acknowledge and welcome applicants from the UK also. We would require applicants to have employment permission to be based in either Finland or the UK and will not be sponsoring visa applications or international relocation at this time.

About the position:

This position will provide services to support engineering design, development and project completion within a specific technical area.

The System Engineer is responsible for participating in the proposal process, technical contractual review, technical contractual exhibit creation and management, scheduling, overseeing the Project Design (Electrical Design Package, Communication, and minor Software), Commissioning, and Technical Support of AC and DC electrical systems associated with utility-scale Battery Energy Storage Systems (BESS).

Key accountabilities:

• Delivers engineering solutions, provides support in design, development and project completion to achieve quality and productivity.
• Collaborates with internal and external stakeholders to deliver tailored engineering solutions that meet requirements and to integrate engineering expertise into broader organizational initiatives.
• Drives innovation in engineering practices, encouraging the adoption of new technologies and methodologies to enhance product and system development. Develops and refines engineering processes, methods, and tools to enhance operational efficiency and effectiveness of the solutions.
• Acts as a subject matter expert, mentoring and providing technical guidance to other professionals.
• Stays updated on industry trends and technological advancements to inform decisions and maintain competitive edge.
• Ensures engineering activities and projects comply with relevant regulations, standards, and best practices, maintaining the highest levels of quality and safety.
  
  

Applicants should have a solid understanding of:

• Contractual language and terms
• Fundamental electrical engineering, project management, and construction principles, as well as experience with the designs of high-power electrical systems.
  
  

We are also open to receiving applications from current/previous On Call Trainee's whose vocational experience with Wartsila would give them good ability to integrate quickly into the team.

This position will be a member of Wartsila's internal and customer technical Subject Matter Expert Team for ESS Products and Projects and will work closely with the following groups:

• Business Development
• Proposal Teams
• Software Delivery
• Product Delivery
• Project Management
• Commissioning Manager
• Other various groups to ensure ESS projects fulfil customer functionality and contract requirements.
  
  

Contact & next steps:

Please submit your application through our Careers portal. Applications submitted via email will not be considered.

After submitting your application, you will receive a confirmation email.

For further questions please reach out to Jason Crouch, Talent Partner, GLobal Talent Segment, through email [email protected] with any questions related to this position (only for questions from direct job applicants, applications through email will not be recorded or responded to and we have no need of agency partner support on this role).

Last application date: 17/12/2025

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.