René van der Giessen, based in Amsterdam, NH, NL, is currently a Owner, Managing partner at Xzellent, bringing experience from previous roles at Aloysius Stichting. René van der Giessen holds a 2007 - 2007 Insights Benelux. With a robust skill set that includes Personal Development, Management Development, Executive Coaching, Coaching, Leadership Development and more, René van der Giessen contributes valuable insights to the industry. René van der Giessen has 2 emails on RocketReach.