Since Jan 2024: Management committee member of the COMETA collaboration
Since Nov 2022: Member of the CosmoVerse collaboration
Sep 2017-Sep 2019: Adjoint scientist of Harmonia Consortium, Poland
May 2015-May 2019: Key member of the Helsinki node in the RISE collaboration, EU
Since Sep 2014: Adjoint scientist of Helsinki Institute of Physics, Finland
Prof. M. Ramsey-Musolf, UMass Amherst, US & T.D.Lee Institute, China
Prof. H. Haber University of California Santa Cruz, US
Prof. S. Moretti and Prof. S. King, University of Southampton, UK
Prof. K. Rummukainen and Prof. K. Tuominen, University of Helsinki, Finland