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Herndon, VA, US

Function:  Engineering
Job Category:  Engineering

Application Engineer ESS

We are now looking for Application Engineer focusing on sales support and development to join our growing product management team.  



Herndon VA, but also Houston TX is a possible location.


About the position:

In this position, your work will include optimizing customer solutions and support our US and international sales and proposal team. Gather, and manage, market/customer/internal requirements as well as actively engaging cross functionally to support the organization with ESS solution related tasks. On a typical day, you might be starting with a supplier call with sourcing and end the day assisting the sales team. You will not be working on this alone, even though the work requires a high level of independency, as you will have the support from your new colleagues in the PM organisation and other stakeholders. For us to be the best match, we expect you to have a good electrical engineering experience from working in energy storage solutions. Alternatively in working in the energy / power systems field.


We are expecting you to take on the following responsibilities:

  • Help to configure battery energy storage systems including component selection, site layout, cable schedule, auxiliary load estimation, HVAC sizing, and battery sizing and augmentation strategy. Conduct cost benefit analysis to optimise system configurations and equipment selection, assist in the development of product requirements, and collaborate in the development of business cases for customers or internal development initiatives
  • Collaborate with sales, proposals, and engineering in the development of value propositions for micro-grids and hybrid power plants including equipment selection, performance guarantees development, and optimal resource mix
  • Develop and document methodologies and best practices to design and configure energy storage systems
  • Provide pre-sales support to the sales, business development, and proposals teams
  • Develop product technical documentation including application notes and input to product manuals
  • Provide customer feedback and market requirements back to the PM organisation to further product development and portfolio management
  • Collaborate in a team environment and/or take charge of opportunities to develop optimal solutions for customers and development programs


As an ideal candidate, you have gained experience from the energy storage industry. For you to succeed in the position, we hope you to have the following competences:

  • 3-5 years of electrical engineering experience focusing in power systems and/or renewable energy
  • Experience designing and configuring battery energy storage systems and battery enclosures
  • Ability to conduct energy studies and determine optimal resource mix and technical requirements for such resources
  • Knowledge of energy markets and different mechanisms power producers generate revenue
  • Proficiency with Autocad. MS office tools, programming.
  • Solving customer’s needs and issues
  • Maintain positive working relationships with customers, peers, subordinates, vendors, shop and office in a fast paced environment
  • Team player attitude internally and externally and excellent communication skills
  • Willing to travel 40% of the time
  • Must be legally authorized to work in the USA without sponsorship


Why you and us?

We have an amazing team and a clear purpose to exist. We are passionate about the work we do and hope to find a colleague with a shared passion for smart technologies and a sustainable future. The work in our team offers a wide range of interesting projects and we truly have an amazing team spirit, supporting each other to develop together as a team. In addition to the core team, you will be working closely with sourcing, hardware and software engineering, suppliers, and sales.

All our employees are encouraged to utilise the variety of training activities, learning solutions and self-study materials that we have to offer which supports the opportunity to further develop your talents and competencies within an international working environment, in an ambitious and growth orientated organisation.


Contact & next steps

We hope to hear from you before the application deadline 30th of June 2021, through submitting your application through our career´s portal. We aim to keep you updated on the process all the way.

In case you have questions about the open position, please contact recruiting manager:

 Mats Östman, Senior Development Manager:


+358 40 8292752 (9.00-17.00 EET)



Successful applicant must be authorized to work in the USA without sponsorship.


We look forward to hearing from you. Qualified candidates must apply online http://www.wartsila.com/en/careers/vacancies.


Wärtsilä North America values our employees. We offer a competitive salary and comprehensive benefits package.   Wärtsilä North America is an EOE/AA employer.

Last application date: 30/06/2021


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.


This is Wärtsilä

Wärtsilä is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation, total efficiency and data analytics, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2020, Wärtsilä’s net sales totalled EUR 4.6 billion with approximately 18,000 employees. The company has operations in over 200 locations in more than 70 countries around the world. Wärtsilä is listed on Nasdaq Helsinki. Find out more at www.wartsila.com

Nearest Major Market: Washington DC