Ruben Markosyan studied at the Republic of Armenia National Academy of Sciences from 1996-1999 as a PhD candidate, finally earning his PhD in 2002 in the field of Technical Sciences. From 1998-2001 he was the President of the Yerevan State University (YSU) Student Scientific Society. From 1999-2009 he worked as a researcher at the Microbiology Institute of the RA National Academy of Sciences.
From 2005-2008 he was the head of the Department of International Cooperation and Public Relations at RA Social Insurance State Foundation. From 2004-2005 he worked as the head of the Department of Foreign Relations at the Pan-Armenian International Youth Center Foundation. In 2008-2009 he worked at the RA Ministry of Labour and Social Affairs in the state social security service as the head of the Department of International Cooperation and Public Relations.
In 2009, Markosyan began working as the Vice-Rector of Students, Alumni and Public Relations, a position he continues to hold. He teaches in the YSU Chair of Public Administration. From 2012 until now he is the Assistant to the Chair of the YSU Department of Public Administration.
For five years he has worked in the sphere of social security, participating in reform projects and supporting implementation of projects by international organizations such as USAID and World Bank. He has been actively involved in the works of the International Social Security Association (ISSA) and those of international associations of pension and social funds. From 2005-2009 he represented the RA Social Insurance State Foundation in those associations.
Now, Markosyan teaches “RA Systems of Social Services” to Masters students at the YSU Department of Public Administration in the Faculty of International Relations.