Herndon, VA, US

Function:  Engineering
Job Category:  Engineering

Full Stack Software Engineer

Wärtsilä Energy Storage & Optimisation (ES&O) is the leading global energy storage provider. 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 and a more sustainable world for us all. We are seeking a mid-level software engineer to join our growing software team located in our software development center in Herndon, VA, USA.



  • As part of Wärtsilä’s ES&O software team you will be responsible for contributing to backend, UI, and deployment code for analytics-based applications.

  • Develop internal applications to support proposal generation for new projects.

  • Participate in an agile development environment.

  • Develop feature and other technical documents.

  • Participate in customer facing discussions, meetings, and project delivery.



  • 3+ years of demonstrated experience with professional front and back-end development.

  • Experience architecting multiple web applications from the ground up.

  • Experience with React for the UI and Python for the backend.

  • Professional expertise in underlying web technologies including HTML, CSS, and vanilla JavaScript.

  • Professional expertise in developing REST and Websocket APIs.

  • Robust experience working with SQL-based relational databases.

  • General knowledge of networking, Linux, code testing.

  • Experience with setting up deployment of software and troubleshooting issues.

  • Experience developing complex software projects in commercial product settings.

  • Experience working in an agile development environment using common tools such as JIRA and Git.

  • Ability to embrace a fast-moving environment and comfortable with quickly adapting to changing priorities.


Desired Experience

  • Development using Typescript.

  • Docker or other containerized technologies.

  • Experience with PostgreSQL.

  • Experience with Google Cloud Platform.

  • Experience with Java.

  • Authentication protocols (OpenID, OAuth, etc.)

  • Experience with setting up system and application monitoring solutions.

  • Knowledge and/or interest in electrical concepts, power grids, renewable or green energy.


Educational / Professional Requirements

  • B.S. Degree in Computer Science, Engineering (Computer, Electrical, Mechanical), I.T., or equivalent years of industry experience.


Last application date: 04/10/2023 


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