- 1997–2002 LLB, 2003 Bank Vontobel (Liechtenstein) AG,
- 2004– 2007 swissfirst Bank (Liechtenstein) AG,
- 2008–2009 Member of the Executive Board of Banque Pasche (Liechtenstein) SA.
- Since 2009 Proprietor of MAFOS Consult Anstalt, Vaduz.
- Since 2009 Vice Chairman of the Board of Directors of LLB.
Markus Foser, born in 1969, lives in Vaduz/FL.