Herndon, VA, US

Function:  Engineering
Job Category:  Engineering

Electrical Test Engineer

Wärtsilä Energy Storage & Optimization (ES&O) is the leading global energy storage optimizer. Our mission is to deliver integrated energy solutions that build a resilient, intelligent, and flexible energy infrastructure - unlocking the way to an optimized renewable future. By integrating renewables, energy management technology, and storage with traditional energy resources, we reinvent clean energy production from the largest and most complex grids to the most remote and essential microgrids. We play a key role in Wärtsilä’s vision towards a 100% renewable energy future through flexibility, reliability, and integration for a more sustainable world for us all.


Wärtsilä’s Energy Business is looking for an Electrical Engineer for the Energy Storage & Optimization business. The role will be part of the hardware engineering team.


The ideal candidate will be a self-starter that can work both independently and as part of an interdisciplinary team. The candidate should thrive in a fast paced, constantly changing environment while the industry and company go through substantial growth.


Location(s) for this position is Wärtsilä’s office in Herndon, Virginia.



  • Validate and test Battery Energy Storage System (BESS), that to include establishing test plan, design test setup, define and size equipment needed such as inverters, circuit breakers, cables, fuses, surge arrestors, develop control and protection scheme, and calculate auxiliary load needed.
  • Design electrical schematics, one-line diagrams, and application/logic functional block diagrams in AutoCAD Electrical or other equivalent electrical drawing programs.
  • Develop cable schedules for AC and DC application, including ampacity calculation, and cable/termination selection.
  • Evaluate product and system designs and configurations for compliance to relevant industry standards
  • Develop test plans for system or component level testing and execute them in lab environment to verify compliance with design requirements.
  • Execute product certification testing at in-house facility or external testing facility.
  • Develop testing documentation such as test plan, test schedule, schematic, bill of materials, test procedure, and test report.
  • Organize the lab equipment and manage lab resources.
  • Collaborate in a team environment and take charge of opportunities to develop optimal solutions for the product development programs.


Minimum Experience and Educational Requirements

  • BS in Electrical Engineering required, graduate degree preferred.
  • 3+ years of electrical engineering experience focusing on testing electrical systems preferably power systems and/or Battery Energy Storage Systems (BESS).
  • Ability to design electrical circuits for up to 1000 Vac and 1500 Vdc ensuring compliance to common design standards.
  • Able to review product or test equipment specification, interconnection requirements and selecting proper cabling.
  • Knowledge of lab instruments such as multimeters, power supplies, DAQ, oscilloscopes etc.
  • Experience with working in lab environment  
  • Experience with working in a laboratory testing environment and thorough understanding of test lab safety.
  • Experience with siemens and B&R automation PLC is a plus.
  • Experience with designing and testing of battery and energy storage systems is a plus.
  • Working knowledge of industrial control philosophies and communication protocols.
  • Experience with AutoCAD Electrical or other equivalent electrical drawing programs.
  • Problem solving and innovative mindset.
  • Maintain positive working relationships with customers, peers, subordinates, and vendors in a fast-paced environment
  • Excellent communication skills
  • Team player attitude
  • Willing to travel 20% of the time.


Last application date: 20/06/2024 


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.


Successful applicant must be authorized to work in the USA without sponsorship. We look forward to hearing from you. Qualified candidates must apply online: https://www.wartsila.com/careers


Individuals hired for positions that require on-site customer interactions and/or in-person travel may be required to be fully vaccinated against COVID-19 or other country-specific vaccinations, unless otherwise prohibited by law. Wärtsilä North America values our employees. We offer a competitive salary and comprehensive benefits package. Wärtsilä North America is an EOE/AA employer.






Nearest Major Market: Washington DC