Management Team Randstad Switzerland

Taco de Vries, CEO, Randstad Switzerland

Taco de Vries, Chief Executive Officer (CEO), Randstad (Switzerland) AG

Taco de Vries became the CEO of Randstad Switzerland in January 2016 having accumulated substantial experience with Randstad worldwide. Taco de Vries first joined Randstad in 2000, as a commercial manager in the Netherlands. The next step in his career came three years later when he moved to France, starting off as a commercial manager at Randstad Inhouse Services, before later assuming responsibility for key accounts in his role as Commercial Director.

Taco de Vries subsequently became Regional Manager at Randstad Germany, where he was responsible for Inhouse Services. From 2011 to 2014 Taco de Vries was Vice President at Randstad Japan, where he played a key role in the successful merger of two companies.

From August 2014 to December 2015, Taco de Vries was the Operational Director for Staffing in French-speaking Switzerland and for Randstad Inhouse Services Switzerland. He is passionate about Randstad’s core values: top quality, attractive services and the Company’s responsibilities to clients, employees and to society as a whole. These are the principles that motivate him every day to give his best in his professional life.

Taco de Vries has a Bachelor’s degree in Agricultural Management, and a Masters in Law. He enjoys spending time with his family and also manages to fit running, cycling and reading Nobel prize winning literature into his busy schedule.


Robert Scheenstra, Chief Financial Officer

Robert Scheenstra, Chief Financial Officer (CFO), Member of the Executive Board

Robert Scheenstra (Executive Master of Finance & Control) has worked at Randstad in a variety of management positions since 2002.

After studying business economics at the Free University in Amsterdam, he initially started as a financial trainee at Randstad Holding; his next challenge was as Head of Planning & Controlling at Randstad Italy. Among other tasks, he was responsible for the financial integration of Vedior (2006-2010). This was followed by other managerial positions in finance at Randstad in the Netherlands.

In his last position he worked as Senior Manager Financial Control and was elected the Controller of the Year in the Netherlands in 2014.

Robert is a Dutch citizen; he and his family live in Switzerland.

Daniel Aumer, Process & ICT Director

Daniel Aumer, Process & ICT Director, Member of the Executive Board

Daniel Aumer has been employed at Randstad (Schweiz) AG and thus has been in the HR sector since 1992. He started as a consultant and then became branch manager before moving to the area of information & communication technology in early 2001. Today, he leads this business unit as its director. In this function, Daniel Aumer is responsible for the management, development and implementation of the ICT strategy in Switzerland.

He is also responsible for the design and supervision of IT projects, disaster recovery and business continuity planning, the definition and supervision of work processes, and fleet and property management.

Daniel Aumer acquired the necessary experience for these demanding tasks during his training in the commercial sector and sales, as well as during his work in sales in the German-speaking and western parts of Switzerland. His military career completed his leadership training and experience.

Nathalie Zihlmann, HR Director

Nathalie Zihlmann, HR Director, Member of the Executive Board

Nathalie Zihlmann has been head of HR since October 2015. She has many years of experience in leadership and company management at both a national and international level. She also has an MBA from the University of Zürich, as well as a master's degree in HR management.

Nathalie spent the previous years as Vice President of Human Resources for a Finnish multinational engineering company. In this role she managed HR for two global divisions, as well as for the European, Middle Eastern and North American markets.

Nathalie has the rare gift of being able to combine high-level analytical and organisational abilities with a talent for motivation. She is used to working in different cultural environments. Nathalie Zihlmann is Swiss, and speaks fluent French and English alongside her native German. Nathalie is a fan of sports and the outdoors, and loves to push her own limits while jogging, hiking (including multi-day hikes), diving or skiing.

Andreas Schenk, Operational Director

Andreas Schenk, Operational Director, Member of the Executive Board

After completing his compulsory education, Andreas Schenk started his career in the hospitality services industry. He first trained as a chef and then completed a programme in business administration, followed by studies at the Hotelfachschule (SHV) in Thun.

He acquired comprehensive practical experience at all levels and in all functions of hotel management over the course of several years, most recently as director of a seminar and congress hotel.
Andreas Schenk has extensive experience in Human Resources. He started in HR in 1997 and held his first position at Randstad (Schweiz) AG in 2004.

He followed the classic career trajectory from branch manager to district manager to regional manager, operational director and finally a member of the executive management team. In this function, he is now directly responsible for businessline staffing (temporary and permanent positions) in German–speaking Switzerland, and specialises in construction and HoReCa (hotel, restaurant, catering).

Olivier Landerer, Professionals Director Switzerland

Olivier Landerer, Inhouse & HR Solutions Director Switzerland, Member of the Executive Board

Olivier Landerer spent his school years in Sumatra, Singapore, Jakarta and England, where he obtained his A-levels. After completing his studies, Olivier Landerer joined the recruitment industry in 1994 and was able to quickly apply and perfect talents at various companies in the IT, finance and technology sectors.

In 2008, Olivier Landerer joined Randstad Technologies in London to set up and manage their international recruitment team covering Europe and the Middle East. He has extensive experience in providing international tailored recruitment solutions across multiple industry sectors.

After several years in England, he moved with his family and took up a new challenge as District Manager Professionals at Talisman Software SA part of Randstad in Switzerland. Olivier Landerer was promoted to Operational Director Switzerland for "Inhouse & HR Solutions" (RIS) in January 2017. Within this role, he is responsible for the development and strategic direction of the whole Swiss professionals organisation. Today, he is responsible for the IT & Engineering, Life Science, Banking & Legal and HR divisions.

Nina Rüschen, International Key Account Director

Nina Rüschen, International Key Account Manager

Nina Rüschen has worked as an international key account manager for Randstad since November 2011. She is responsible for building and developing relationships with key clients across all business divisions. She takes care of clients from the first contact and the optimisation of processes and interfaces, to the implementation of tailored services.

Nina studied German and Psychology at the University of Warwick and Law at the College of Law in Guildford. In 2008, she completed a Master's in Business Administration at Warwick Business School before successfully completing a course of studies in Communication for Non-Profit Organisations at the University of Zurich in 2011.

Nina has been able to demonstrate and refine her outstanding customer-care skills and dedication to service in various positions, including at Lufthansa, at McDonald’s Germany as the head of customer services and at British Airways, Germany, as the head of cabin crew.


Kerstin Lehnert, Marketing Director

Kerstin Lehnert, Marketing Manager 

Kerstin Lehnert has been working at Randstad in Switzerland since June 2013, joining the company as a communication specialist before being made responsible for marketing in October 2014. In her current role, she determines the strategic direction of Randstad's marketing and communications and manages both the development and implementation of the company's marketing activities.

Kerstin developed and honed her professional skills in the tourism and hotel industry. After training to work as an assistant in the field of hotel management and tourism, she took on various positions in prestigious hotels and resorts, such as the Radisson SAS Hotel in Cork, Ireland, and Hotel Beau Rivage in Geneva as well as at the headquarters of Mövenpick Hotels & Resorts in Zurich. Here, she had the opportunity to put her communication and organisational skills to the test in both client-facing roles and in corporate marketing departments.

In addition to her mother tongue of German, Kerstin speaks fluent English and French. Outside of work, she and her partner are kept busy looking after their daughter and two dogs.

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