Mennold Leijerzapf - CCO Vibe Group and part of Board of directors
your attitude sharpens the mind, your mind bites the competition
Mennold Leijerzapf Chief Commercial Officer Benelux

Our managing board

In our board our founders still have a place. The managing board consists of these 5 members.

Bernd van Baars


Daniël Visser


Johan Bogaard


Mennold Leijerzapf

CCO Benelux

Yannick de Meijer

Managing Director Belgium

Advisory board

Hans den Hartog

Hans is an experienced board member, entrepreneur and advisor. He holds a Master in Tax Laws from Leiden University and started his career as a tax lawyer at PwC. Later, he served in various C-level management positions, including as CFO at Ordina N.V. (1999 – 2010), CEO at Inter Access (2010 – 2013) and MD at the IT-Ernity Group (2013 – 2015). Since 2015, Hans has been active as an entrepreneur and co-owner of several companies in the fields of IT consulting and cloud computing.

Ronald Kasteel

Ronald is an experienced and entrepreneurial CEO and non-executive. He holds a master's degree in Public Management with a specialisation in Decision Support Systems from the University of Twente. Ronald started his career as a management consultant. He served as CEO of the listed company Ordina N.V. for 12 years, before going on to become CEO of KZA, co-founder/CEO of Keylane and CEO of Onegini. Apart from his role as an advisory board member at Vibe Group, he is a non-executive at RGI s.r.l., Ormit International B.V., chairman of the board at OpenClaims B.V. and an active private equity investor.

Rudiger Wanck

Rudiger Wanck joined the WPP Group in 2001. After leading the largest media agency in the Netherlands, he took on a regional executive leadership role as Chief Digital Officer for GroupM across EMEA. Later, he became CEO of GroupM in the Benelux, before being promoted to the position of global COO for digital, and then moving on to become the company’s global CEO in 2014. In 2016 he stepped down from this role to co-found his own investment and development platform, Moon Ventures. As of 2020, Rudiger is CEO of CANDID, a full-service media platform.

Steven Quinn

Steven served as CEO of Specialist Staffing Group Inc. (SThree Americas) from 2012-2018. During this time, he oversaw the company’s growth from $40 million to $287 million in revenues. Steven worked at SThree for 22 years, including 12 years on the executive board. He is also the co-founder and chairman of Alldus International, a staffing and media company specialising in the field of artificial intelligence. Since December 2018, he has acted as an Executive Partner with a leading Private Equity firm in New York.