After graduating in 1983 from Rotterdam Erasmus University, where she studied Econometrics, Ms Bos joined Algemene Bank Nederland (Later ABN AMRO Bank) where she held different positions at the Directorate General Planning and Control. In 1995 she moved to ABN AMRO Netherlands division holding various senior management positions. From 1991 till 2001 she was responsible for Operations, IT and Facility Management as COO of ABN Amro Asset Management. In this capacity she also held the role of program director of the Asset Management BPR Project.
In 2001 she joined NIBC Asset Management as Co Head Investments becoming COO/CFO the following year. Ms Bos started at PGGM Investments in 2003 as Director. In March 2005 she was appointed Chief Executive Officer PGGM Investments and member of the Board of Directors of PGGM.
Per 2010 she holds the position of Deputy Chairman Executive Committee and Chief Institutional Business. As of November 2012 she is acting CEO and Chief Institutional Business. She also has several non executive positions like Boardmember UN PRI (Principles for Responsible Investment), as well as Member Supervisory Board NWB (Nederlandse Waterschaps Bank), Member Supervisory Board NHG, member of the Supervisory Council of Isala Clinics, and member of the Supervisory Council of the National Ballet/Dutch Opera/Musictheatre.