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Hamburg, DE Turku, FI Helsinki, FI Fareham, GB

Function:  Sales & Marketing
Job Category:  Sales & Marketing

Senior Proposal Engineer

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?


We are looking for a Senior Proposal Engineer to join our dynamic, fast-paced Energy Storage team. The preferred locations for this position are Finland, UK or Germany. We work in hybrid model, so the locations can be discussed.


What will you be doing?


As a Senior Proposal Engineer, you will be the subject matter expert for Energy Storage in the Africa and European Union (EU) regions, including expertise in the technical design of systems and identification of the business models that support the economic case to deploy storage.

The ideal candidate has BS/MS/PhD in Electrical Engineering / Power Engineering and experience with the energy storage and renewable energy markets.


As a Senior Proposal Engineer, you will focus on these responsibilities:


• Work closely with the software team to develop time-series system models and perform simulation analyses for system sizing, performance optimization, and/or energy management algorithm development. Present simulation results to customers.

• Work closely with the existing Wartsila Sales team to help identify and engage with key customers/accounts within the area, and support and maintain relationships relative to Energy Storage

• Manage RFP response process including determining bidding strategy and partner selection and working together with such partners to submit winning responses and drafting the actual proposal

• Lead proposal creation for energy storage and hybrids

• Write proposal content regarding to specific customer requirements and unique value points for the integrated solution

• Create Design and create high-level as well as detailed system design drawings, layouts, schematics

• Specify appropriate system components, calculate component ratings and quantities, and create detailed bills-of material for material and labor cost estimates

• Interface with vendors to understand the form, fit and function of their products and services; and determine which products are best suited for an application or project

• Assist in developing software model architectures for various configurations of energy storage, engines, utility systems, and renewable generation to be used in grid tied and stand-alone power applications.

• Utilize value concepts & tools defining the right value solutions for each individual customer

• Assist in developing a hybrid power solution utilizing Wartsila engines, batteries, and renewable generation technologies

• Help further development of Sales Tools for energy storage and hybrids


To be successful in this role, we expect you to have:


• Experience with the energy storage and renewable energy markets, projects, and products (bi-directional inverters, various battery chemistries, PV, wind turbines, flywheels, etc.)

• Strong understanding of utility generation project development process

• Experience with industrial control methods and SCADA systems

• Able to read and understand system schematics, single-line drawings, mechanical elevation, and building layout drawings

• Competent with ACAD or equivalent drafting tools

• Understanding of CE, UL, IEEE, IEC and NEC standards as applicable to local region.

• Knowledgeable in utility systems and interconnection requirements for electric generators.

• Dynamic load flow modelling experience (PSSE/PSLF, ETAP or equivalent)

• Passion for innovation, ability to adapt to fasting changing market demands, working independently

• Solid organizational skills including attention to detail, multi-tasking skills and a strong work ethic

• Energetic and enthusiastic approach

• Ability to travel as required (estimated 25-33% of time)

• Medium-voltage system design and construction background is desirable as well as relationships with regional EPCs, Developers or IPPs

• Excellent communication skills in English. Written and spoken German is considered a benefit.


Why you and us


You will be a part of a global organization with local presence and work in an exciting and dynamic working environment with highly motivated and skilled co-workers. We offer interesting and challenging work tasks, as well as personal and professional development in a great team. 


If you feel excited by being a part of this working environment and think your personal skills and qualities match the job requirements, we look forward to receiving your job application.


Please apply by 14th of September, 2022

 For more information, please contact:

Jens Nybäck

Proposal Manager AFEU


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 Energy leads the transition towards a 100% renewable energy future. We help our customers in decarbonisation by developing market-leading technologies. These cover future-fuel enabled balancing power plants, hybrid solutions, energy storage and optimisation technology, including the GEMS energy management platform. Wärtsilä Energy’s lifecycle services are designed to increase efficiency, promote reliability and guarantee operational performance. Our track record comprises 74 GW of power plant capacity and more than 80 energy storage systems delivered to 180 countries around the world. 

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. We emphasise innovation in sustainable technology and services to help our customers continuously improve their environmental and economic performance. Our dedicated and passionate team of 17,000 professionals in more than 200 locations in 68 countries shape the decarbonisation transformation of our industries across the globe. In 2021, Wärtsilä’s net sales totalled EUR 4.8 billion. Wärtsilä is listed on Nasdaq Helsinki. Find out more at