Imagine a small and dedicated team of well experienced professionals. With a knowledge base and management experience rooted in Amsterdam Airport Schiphol, one of the leading commercial airports in the world. And with an unsurpassed professional network of consultants at the fingertips which gives us the opportunity to offer you – our clients - dedicated specialist teams delivering tailor-made solutions.

Building on this base we have successfully executed projects in the public and private sector. And not only in the Aviation or Transportation sector, as we discover that our experience and skills are of value as well in other service sectors ranging from urban planning to regional development and business schools. Our strength lies in knowing your business and putting our teams to work for you, with you.



Stratagem Group was founded in 2006 by Paul van IJsselstein and Bouke Veldman. In 2012 Gert Jan Hermelink founded Stratagem Consulting as a new brand name under the Stratagem umbrella. Today, the Stratagem consortium consists of Stratagem Group and Stratagem Consulting. In 2015, Stratagem Consulting signed a teaming agreement with strategy consulting firm The Performance Factory from Oman, with branch offices in Dubai, India and the U.S.A. This enables us to more easily offer our services in the Middle East and Indian markets.

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Who we are

Gert Jan Hermelink

Managing Partner

Gert Jan has more than fifteen years of management experience with air- and seaports and in international freight forwarding. He started his consulting career with KPMG and founded Stratagem Consulting in 2011, advising Airports and the Public Sector. His recent assignments include airport and aviation strategy and development projects.

Rob Nispeling


Rob is partner in Stratagem Consulting. His background includes more than twenty years of port and airport management. In the past ten years he was active as a consultant in the fields of aviation, airport strategy & development, project management and area development. Specialist assignments include air cargo and real estate development.

Rico Liebrechts


Enrico is owner of Airport Consultancy International and is an associate of Stratagem Consulting. He has more than thirty years of experience (mostly with NACO Airport Consultants) in the field of airport architectural design, master planning and engineering. He was involved in the development of 93 airport projects in 28 countries.

Pietjan Versluis


Pietjan is partner in consulting and design firm Studio VK, specialist in airport feasibility studies, master planning, redevelopment studies and building design. Over the past twenty years, Pietjan has provided services in Europe, the Middle East and Africa. Pietjan and Studio VK are associates of Stratagem Consulting.

Bert Angel


Bert Angel has over 30 years of experience in (logistics) real estate development, leasing and investment, both in the public and private sector. He has international experience in masterplanned logistics park development in ports and airports, logistics real estate location consulting and warehouse development and investment.

Dr. Aju Samuel


Aju is Founder, Director and Partner of consulting firm The Performance Factory with offices in Muscat, Dubai and New York. Aju has 20+ years of professional experience in Strategy and Performance Management, Corporate Governance and Business Consulting in Public Sector, Energy, Manufacturing & Production, Banking, Financial Service Industries and in the Airport Sector. Aju is certified in Balance Scorecard Methodology and studied General Management at the Indian Institute of Management (IIM-B) in Bangalore, India.

Khalil Al Harthy


Khalil is Founder, Director and Partner of the The Performance Factory, has professional experience (22+ years) in Finance & Business Consulting, Corporate Governance, Compliance, Organizational Leadership as well as in Professional Training. Khalil is a member of the International Compliance Association (UK), has a Bachelor of Science in Finance (University of New Orleans, USA) and a Balanced Scorecard certification through George Washington University (Washington DC, USA).

George Philip


George is Managing Partner of The Performance Factory and has extensive consulting experience (+16 years) in Strategy, Corporate Governance, Enterprise Performance, Change Management, Business Intelligence and IT-project management across a wide range of industries including Airline/Transportation. George has attained an MBA from HEC Paris, France and a Bachelor Degree in Engineering from Bharathiyar University, India.

Stratagem Consulting:
working with you, for you