I experience Gert-Jan as a real sparring partner: He zooms in on... (read more)
I will always be grateful to the person that suggested I make... (read more)
In the spring of 2010 Gerard Milo, CEO of regional broadcaster Omroep... (read more)
I have been working with Gert-Jan for about seven years. In the... (read more)
After more than 15 years at Accenture, I thought I already knew... (read more)
When I first met Gert-Jan a few years ago at a network... (read more)
Ampelmann is smaller and more entrepreneurial company than the companies I have... (read more)
I have had the good fortune to work with The World We... (read more)
Arcadis has been working with The World We Work In for almost... (read more)
Within BNP Paribas Investment Partners, I worked with Gert-Jan van Wijk in... (read more)
The process of initiating, planning and executing Leadership Development programs is a... (read more)
Vopak Netherlands worked with Gert-Jan van Wijk in the strategy-making process for... (read more)
Over a period of 5 years our company developed from a traditional... (read more)
Gert-Jan and his colleagues have helped us making grand strides towards becoming... (read more)

Mariska van IJzerloo

Ampelmann, Director People & Organization

Ampelmann is smaller and more entrepreneurial company than the companies I have worked for before. When I recognized the need for leadership development, I realized immediately that the program we would design would need to have a strong connection with the business and its entrepreneurship.

We worked on that ‘Ampelmann heart beat’ very closely with Marieke van der Giessen and her TWWWI team (Coen, Barbara and other guest faculty). The ‘Leading Growth’ program that resulted was as closely connected as possible. Best example is the reorganization that emerged half away through the program. Marieke and team did not walk away when things got tough. They helped us prepare for difficult and courageous management conversations. Marieke helped the MT members navigate the reorganization. That created a lot of trust. All in all I feel we really got the max out of the one main leadership initiative that was possible. All smaller side activities that grew from the program supported our organization further.

Mariska van IJzerloo_twwwi