- CEO of NoR-CEL (http://www.nor-cel.com): A Network of Researchers for the Chemical Evolution of Life. Founding member of the Association, previously named as NoR HGT & LUCA Association.
- Mars Society Hellas (Greece) https://marssociety.gr & http://hellas.marssociety.org
- Management Committee representative for COST Action “ORIGINS (Origins and evolution of life on Earth and in the Universe” (http://www.cost.eu/TD1308).
- Executive and committee member of the European Astrobiology Network Association (EANA)–Representative for Greece
- Founder of the unofficial Greek Astrobiology Association (http://www.astrobiology.gr).
- Member of the International Geochemical Society (http://www.geochemsoc.org/).
- Founding Member of the Research Centre for the Culture and Environment (RCCE), a non-profit organisation established in Athens, Greece (http://www.ekeppol.gr/). Validated by the European Commission, 7th Framework programme, with PIC 986892066.
- Manager of the “Astrobiology” group in Linkedin© currently with over 1050 members. (http://www.linkedin.com/groups?gid=1912155)
- Manager of the “Biosignatures” group in Linkedin©. (http://www.linkedin.com/groups?gid=4797037)
- Manager of the “Martian Meteorites” group in Linkedin©.
- Member of the Astrobiology Future Initiative.