Hello! My name is Miikka Koskinen. I create software and study mathematics in Helsinki, Finland. You might know me by the handle arcatan.


I work as a software developer. I have extensive experience in full-stack Clojure development. I’m currently looking for new challenges.

My previous employers include Metosin, ZenRobotics and Futurice. I have a Master of Science degree in mathematics from University of Helsinki.

Internet presence

Public speaking

The talks I’ve given about functional programming: