Meet the Team

Andrea Keller

PARTNER

Business Development

Andrea Keller has worked in international career management for over two decades. She began with a major personnel placement firm in Zurich, Switzerland. She came to the United States in 1995 and joined Thunderbird, where she advanced to Director of Business Development of the Schoolʼs Career Management Center. In November 1998 she joined C.O.I. as its Chief Executive Officer.

John Keller

PARTNER

Operations

John Keller has spent half his professional life in the United States and half in Europe. His rich experience includes some 20 years in executive positions in international banking both in the U.S. and abroad, as well as several years in international financial management with a Fortune 500 company (including extensive exposure to Latin America).

Erin Henry

General Manager

Operations

Erin Henry joined C.O.I. the beginning of 2008 after relocating to Arizona from the Pacific Northwest. She graduated from Oregon State University  and spent some 20 years in Portland, Oregon in human resources and the recruiting industry. She prides herself on building strong relationships with her customers as well as developing and leading teams of successful recruiters and account executives through the years.

Carsten Wortmann

General Manager

Executive Search

Carsten Wortmann has joined C.O.I. in August 2019 as a General Manager, based out of Frankfurt. Carsten has over 20 years’ experience in international management consulting. He has worked for firms such as Arthur Andersen, Kienbaum, and Ernst & Young. Over the last 10+ years, he had his own consulting company assisting German companies with their activities in China and India and vice versa, including the role of being Interim CEO responsible for business development. Carsten holds a German Master’s degree in International Business and an MBA from Thunderbird in the US.

Andre Siegenthaler

BUSINESS PARTNER

Executive Search

Andre Siegenthaler spent 27 years with the Hilti Group in Liechtenstein. He held various Senior Human Resources responsibilities which included Vice President Human Resources International in Liechtenstein, Vice President Human Resources Western Hemisphere and as a member of the Executive Management Group in Tulsa/USA, as well as other senior HR roles. He joined C.O.I. as the Executive Search Business Partner in May, 2009.

Anna-Karin Birrell

Business Partner

Executive Search

Anna-Karin Birrell is an Executive Search Business Partner for our Zurich branch.   Anna-Karin brings extensive experience as an HR Leader, Executive Search professional and in earlier years, as Account Manager.  Her roles have been across the manufacturing, automotive, consumer goods and technology industries.  Areas of expertise include Talent Management, Change Management and Succession Planning, as well as building a successful practice for an executive search firm in Sweden. She holds a Master’s in Business and Economics from Uppsala University in her native country of Sweden.

Claudia Pena Gonzalez

Business Partner

Executive Search

Claudia Pena Gonzalez joined C.O.I. in August 2019 as ESBP for Latin America.  Claudia has 25 years of experience in human resources and marketing.  Some of her primary focus has been within management consulting where she supported a variety of industry on topics including Strategy, Business Process Re-Engineering, Continuous Improvement and Total Quality Management (TQM).   Claudia graduated from the Universidad Panamericana with a degree in Business, HR and has advanced studies in Human Capital.  Claudia is residing in Mexico.

Ildiko Mueller

BUSINESS PARTNER

Executive Coaching

Ildikó Mueller-Kovacs brings an extensive background in Human Resources, Coaching, Leadership, and Organizational Development. Ildiko has worked with many leading international organizations in Europe, North America and Asia in various industries including Banking, Information Technology, Pharmaceuticals/Biotech, Automotive and Retail. Ildiko is a Qualified Administrator of the Myers-Briggs Type Indicator Instrument. She has over ten yearsʼ of experience in management within various blue chip organizations in Switzerland.

Emily Davies

Director of Recruiting

Executive Search

Emily Davies comes from an extensive background in management and recruiting from one of the largest providers of higher education in the United States.  Through her experiences, Emily has developed a knack for identifying a candidate’s potential career opportunities and key characteristics needed in successful corporate employees.  Her passion is building mutually beneficial business relationships with people from all over the world.  Emily has a Bachelor’s Degree from the University of Arizona Eller School of Management in Business Administration.

Julia Herget

Research Associate

Executive Search

Julia studied at the University of Wuerzburg, Germany and at Beijing University. She holds a BA in “Modern China” as well as a BA in “Political and Social Studies”. Following her career at the Hong Kong Trade Development Council, she advanced to an HR Generalist position at a German automotive supplier. Her role included managing the recruiting cycle as well as being responsible for the employee development channels. Julia also worked for two years as a Project Manager in a boutique consulting company, in which she focused on HR related assignments in projects between Europe and China. Julia speaks German, English and Chinese.

Emanuel Frey

Executive Recruiter

Executive Search

Originally from Switzerland, Emanuel studied Civil Engineering & Architecture at ETH, before completing his degree in Education at UZH. His background includes medical training & team management, followed by roles in different educational institutions, companies, & non-profit organizations in program management, event management & was a driving force in building up online radio stations and a live video broadcasting platform. Team building and helping other people achieving their goals has always been his passion and has guided him on his way. Emanuel speaks Swiss, German, French, Italian and Spanish.

Alain Kuhn

GENERAL MANAGER

C.O.I. ZURICH

Alain, is the General Manager of C.O.I.ʼs Zurich office. He received his practical education in business and real estate administration over a five year period under a scholarship provided by the Swiss Authorities to its Employees while working as an Administrator in the Finance Department of the Canton of Zurich. He holds a CPA license in Switzerland and has extensive experience in accounting and audit.

Karen Walch, PhD

PRACTICE LEADER

Assessments and Leadership Development

Dr. Karen S. Walch, associate professor and consultant at Thunderbird School of Global Management, has an academic background in international negotiation, cultural competencies, and political economy. She has several decades of experience in various business and academic contexts, including insurance, law, tourism, aquaculture, security studies, and MBA graduate education. Karen pursued a Ph.D. in international political economy and negotiation at the University of Wisconsin while working in business, political, and legal settings.

Markus Bucher

MEMBER

Advisory Board

Markus is part of the C.O.I. Advisory Board. He commenced his career in finance with the leading global apparel company Bally, rising to CFO in the USA before joining Holcim as a Senior VP. His company was the first SAP-certified company offering an HR Business Process Outsourcing Solution in Africa and managed close to 150,000 employees for multinational companies at the time Markus sold the company. Educated in Switzerland with an undergraduate degree from the University of St Gallen, Markus has an MBA and an AMP from the top-rated INSEAD and speaks 5 languages.

Chris Litherland

Member

Advisory Board

Chris is an Organization Effectiveness Consultant, Executive Coach, Business Advisor, and the founder of Mariposa Consulting International who specializes in Organization Effectiveness & Change Management, Executive Coaching & Development, HR Excellence programs, and Business Advisory support.  For over 25 years, he held senior HR leadership roles at several major technology companies. A graduate of Sheffield Hallam University with a degree in Environmental Studies, a Chartered Fellow of the CIPD, SHRM-SCP certified, and a founding member of their Leadership Board in Austria & Germany.

Christoph Von Arb, PhD

MEMBER

Advisory Board

Dr. Christoph A. von Arb is the Founder and President of ‘International Initiatives Inc. – TRIPLEYEʼ, a Swiss based consulting firm. In 1990 he joined the Embassy of Switzerland in Washington, DC as Counselor for Science and Technology and later was appointed Head of International Affairs, Office of the State Secretary for Education and Research. From 2002 to 2008, Dr. von Arb served as Consul General and Director of the first Scientific Consulate of Switzerland, Swissnex Boston in Cambridge, MA, USA. He has served on the Scientific Board of Virginia Bioinformatics Institute, as well as the Swiss American Chamber of Commerce.

Reyad Fezzani

MEMBER

Advisory Board

Reyad Fezzani has over 21 years of experience as a global energy business executive and a passion for Renewable Energy and Clean Technology. Reyad was raised and educated in the UK, and holds a Masterʼs Degree in Chemical Engineering and Chemical Technology from Imperial College, London. He has worked in Asia, Europe, North Africa, and the United States. Reyadʼs Specialties include: Renewable and Alternative Energies (including Solar, Wind, Biofuels and Biochemcials), Oil Products Refining, Marketing and Petrochemicals, Oil Supply Trading and Logistics, Oil and Gas Exploration & Production, Mergers & Acquisitions.

Warren Turski

MEMBER

Advisory Board

During Warren Turskiʼs 35-year career at General Motors, he has facilitated hundreds of workshops with measurable results. One of his core competencies is performance management development and execution for large-scale complex programs and processes. He has experience in leading global teams to drive performance improvements using metrics and highly-visible focused communications.