Data Science Intern - Summer 2025

The primary function of this role is to advance the development of our Renewable+ product offering. The Data Science Intern will assist in the development of simulation tools, forecasting methods, and data driven operation optimization algorithms for energy systems in Python. The Intern will be an integral part of the Simulation and Data Science team in a Research and Development role, working to accelerate the development of our software capabilities while supporting new product development initiatives in the field of automated power system optimization. Essential Responsibilities: Develop, implement, and leverage linear and quadratic programming optimization methods. Turn data models and algorithms into software and evaluate model effectiveness by conducting tests on large sets of historical data Build simulation tools with front-end web interfaces that reconstruct events Work with our cloud services development team to deploy and monitor Python solutions in a cloud/bare-metal hybrid environment, helping to tune and debug performance Tune data models and algorithms for conducting time series analysis, forecasting, and operation optimization related to energy management, improving performance and accuracy within the context of the business logic Improve internal libraries to facilitate rapid software product development Write documentation on algorithm and model improvements to clearly communicate the structure of new methods and implementations, including justification Support tasks outside of job description as needed The candidate must be able to embrace the fast and dynamic environment of a growth stage company, comfortable with adjusting quickly to changing priorities.

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 and a more sustainable world for us all.