Since 2016, Dr. Tobias Keller has been working as a Data Scientist at Zero.One.Data, the Big Data Startup by DB Systel GmbH. He applies and consults on Statistics and Machine Learning as well as Data Visualization Tools in a Big Data environment. For example, he performs analyses for DB Station & Service and DB Energie. Furthermore, he teaches Data Science at the Deutschen Bahn as well as part of the doctoral education programs at universities.