Arjan Eleveld

Founding Partner

Arjan Eleveld is a psychologist by training, worked in various management positions and now counts over 23 years of experience in consultancy. He worked in various (executive) positions at Gist-brocades (now DSM), management consulting firm ATKearney and at, its previously subsidiary firm,  KPN.  Arjan was involved in the division of KPN and became responsible for the flotation of TPG in 1998, predecessor of TNT and PostNL.

In November 1998, he became CEO of LTP, which would stay under his leadership for 16 years. Concurrent with his leaving in November 2014, LTP was elected best HR consultancy firm in the Netherlands. Besides his work at Jonathan Warner, he is president of GAPI, an international alliance for consultancy firms.

Arjan Eleveld has authored two management books. The last book, ‘Echt’ (real, genuine) was published in January 2016. Moreover, he wrote countless articles on leadership.

Arjan Eleveld regularly advises on executive level appointments. He also works with executives to improve their collaboration and he supports executive teams in a variety of other matters. Over the years, he has advised a great number of companies and organizations, both in the Netherlands and abroad.


Our Team

Jonathan Warner has a team of 14 consultants. The qualifications of our team spread across the entire spectrum of our services. In addition, we maintain an extensive network of consultants whom we employ when the size or specificity of an assignment is beyond the capacity of the team presented below.

Arjan Eleveld
Arjan Eleveld
Founding Partner
Herman Prakke
Herman Prakke
Managing Partner
Reinout van Kalleveen
Reinout van Kalleveen
Partner and executive coach
Amber van den Hout
Amber van den Hout
Partner and assessment adviser
Dorien Gruppelaar
Dorien Gruppelaar
Assessment adviser and personal coach
Frank van Luijk
Frank van Luijk
Executive assessment adviser and leadership expert
Pernille La Lau

Presentation coach
Hans Roos
Hans Roos
Management consultant and personal coach
Rene Bastiaansen
Rene Bastiaansen
Specialist in leadership programmes
Jolanda Vollebregt
Jolanda Vollebregt

Office manager
Frans Gosses
Frans Gosses
Executive coach and management consultant