Executive Management Team

Rob Zandbergen

Rob Zandbergen (1958) has been CEO of RGF Staffing since 1 January 2018 and Chief Financial Officer since 1 April 2019. He is also Managing Corporate Executive Officer of Recruit Holdings and Head of Staffing Business. Previously, he was CEO of USG People (from 1 July 2010). He has been active in the temporary employment sector since early 2003.

Zandbergen has held various international and national executive and supervisory positions at publicly listed companies. He graduated from the Royal Netherlands Military Academy in Breda and holds a master’s degree in business economics from the University of Amsterdam. Rob Zandbergen holds Dutch nationality.

Tom Dejonghe

Tom Dejonghe (1977) has been CFO of RGF Staffing since November 1, 2020. As of January 1st, 2023, his portfolio also includes Legal, Risk and Compliance. He started his career in 2003 at PricewaterhouseCoopers (PwC) developing deep expertise in Financial Operations, M&A and Valuations in both listed and non-listed multinationals.

In 2012 he joined the listed company USG People as Finance Director in the Belgian operations. In 2015 he was promoted to Director Corporate Control at head office. Dejonghe played a key role in the acquisition by Recruit Holdings Inc. and post merger integration. On January 1, 2018 he was promoted to Global Director Controlling for Staffing operations.

Tom Dejonghe has a degree in Applied Economics from the University of Leuven and is a CPA. He is a member of the Belgian Institute of Registered Auditors (IBR) and holds the Belgian nationality.

Michael Whitmer

Michael Whitmer (1964) has been a member of the Executive Management Team of RGF Staffing since 1 April 2019. He has been Global CIO of RGF Staffing since 1 January 2018. Whitmer holds a Bachelor of Science in Computer Science from University of West Georgia.

He’s been with Recruit since 1 July 2012 as operational CIO for Staffmark Group/Advantage Group UK, which he held until 1 January 2019.

He started his career as a software engineer and has worked in technology for over 33 years, 17 in staffing. For the past 20 years, he gained a strong business acumen while holding numerous roles managing Information Technology internationally. Michael Whitmer holds American nationality.

Han Oey

Han Oey (1961) has been Chief Strategy Officer of RGF Staffing since 1 April 2019. Oey has started working for USG People, the predecessor of RGF Staffing in 2011. From 1 January 2018 he was promoted Global Director Business Development & Strategy of RGF Staffing. 

He started his career in the FMCG business followed by several international management positions in the telecoms industry in the areas of sales and marketing, M&A and strategy. Besides that, he is a co-founder and investor in innovative start-ups.

Han Oey holds an MBA from the Rotterdam School of Management, Netherlands and HEC, France and has the Dutch nationality.

Yvonne Mastenbroek

Yvonne Mastenbroek (1981) has been Chief Sustainability Officer of RGF Staffing since 1 April 2023. She is over 17 years with the company in various roles, supporting the company through its growth stages, from a European listed company to a global organization as part of Recruit.

She has held several management positions like Chief of Staff at RGF Staffing global headquarters before being promoted to Chief of Sustainability Officer.

Yvonne Mastenbroek is passionate about building the most sustainable staffing company and bridging opportunities for all and has the Dutch nationality.

Non-executive board

Hisayuki Idekoba (Chairman)

Executive Vice President and COO, Board Director, Head of HR Technology Business, CEO of RGF OHR USA, Inc., Chairman of RGF Staffing B.V.


Ayano Senaha

COO and Managing Corporate Executive Officer of Recruit Holdings Co., Ltd.


Akihiko Mori

Corporate Executive Officer of Recruit Holdings Co., Ltd. (Finance, Accounting & Tax).