Jeroen Janssens


Jeroen Janssens teaches data science; often through training and coaching, occasionally through speaking, and infrequently through writing. His interests include visualizing data, building machine learning models, and automating things using either Python, R, or Bash.

Jeroen is the founder and CEO of Data Science Workshops. They organise open enrollment workshops, in-company courses, inspiration sessions, hackathons, and meetups. All related to data science of course.

Previously, he was an assistant professor at Jheronimus Academy of Data Science and a data scientist at Elsevier in Amsterdam and various startups in New York City. He is the author of Data Science at the Command Line, published by O’Reilly Media. Jeroen holds a PhD in machine learning from Tilburg University and an MSc in artificial intelligence from Maastricht University.

He lives with his wife and two kids in Rotterdam, the Netherlands.


Jeroen is available to provide training and coaching in the areas of data science, data engineering, and machine learning. He’s also available to speak at private and public events. If you would like to know more about his services, fees, and availability, then please email Jeroen. You can also find him on Twitter, GitHub, and LinkedIn.


  • tmuxr. An R package for managing tmux and interacting with the processes it runs.

  • Data Science at the Command Line. Currently writing the second edition.

  • scikit-sos. A Python implementation of the Stochastic Outlier Selection algorithm.