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Staff & Board

The Partos team organizes with and for members all kinds of activities and programs in the areas of lobbying, innovation, joint learning, image, and representation. Furthermore, the team supports its members when it comes to efficiency, quality, and organizational development. Please contact one of our staff members for cooperation or questions. We are happy to help you!


Alexander Medik Manager Quality, Learning &
Erika van Heeringen Communications
Frédérique Been Impact
Gigi Ong-Alok Innovation Facilitator
Koos de Bruijn Manager Advocacy &
Liana Hoornweg
Marion van der Knoop Finance &
Mariska Keizer Office Manager & Integrity
Marleen Kooij Office
Niels Hoogerheijde Political
Sera Koolmees Senior Communications
Sonja Bleeker Learning Experience


Annelie Cluistra Intern Advocacy &
Bo Zwanenburg Intern Learning &
Nienke Klaassen Intern Learning &

Board members

Edwin Visser General MemberZOA
Erik Ackerman TreasurerLiliane Fonds
Hans Bruning ChairIndependent
Hans Heijdra General MemberSNV
Jacqueline Lampe General MemberRNW Media
Jannemiek Evelo General MemberCHOICE for Youth & Sexuality
Rina Molenaar General MemberWoord en Daad