Diving and cave exploration:
2010 Joined Finnish Caving Association and Turku YMCA dive club
2012 NAUI Trimix Gas Blender certification
2012 Sveriges Speleologförbund SRT1 certification (cave rope access/climbing) and membership
2013 NAUI certified scuba diving Assistant Instructor
2014 PSAI certified Full Cave Diver and VaPePa certified recovery diver
2014-2018 Finnish Caving Society board member and training officer
2013-2015 Writer in Sukeltajan maailma, a Finnish diving magazine.
2013-2016 Writer in the Finnish Caving Society journal and in the journal of Sveriges Speleologförbund
2017-2018 Editor-in-chief of the annual journal of the Finnish Caving Society.
2015 Coursera: Bitcoin and Cryptocurrency Technologies (nondegree online course by Princeton university)
2017 autumn: TUCS block chain seminar
2017 Founding member of the Turku information security society TurkuSec ry
2017-2018 Board member of TurkuSec ry
2017-2018 Started to do regular excercise 3 times a week (martial arts) to stay fit.