Rienk van der Es is a professional with extensive experience in finance and control, currently serving as an RVE controller at Medisch Centrum Leeuwarden since April 2014. Previously, Rienk worked as a Medewerker Finance & Control at GGZ In de Bres from April 2011 to March 2014 and conducted research on internal processes as a Scriptant at Smurfit Kappa GSF from December 2009 to June 2010. Additionally, Rienk held the position of Boardmember (Treasurer) at GSV Groningen from September 2008 to September 2009 and worked as a Student Assistant at Rijksuniversiteit Groningen from November 2008 to April 2009. Rienk van der Es earned a Master of Science degree in Accountancy from the University of Groningen, completing the program in 2010.