WTI Advisors is built on a core team of experienced trade professionals, complemented by specialized consultants.

Core Team: Directors

  • Hadil Hijazi, MA, MSc | Director

    is a seasoned trade policy advisor. She has 15 years professional experience advising public and private institutions on trade and economic policy and related private sector matters. Her practice focuses on trade policy and law, including in particular DDA negotiations, trade in services, NTBs and Trade Facilitation, rules of origin/cumulation, TBT, SPS, WTO accession, Aid for Trade, EuroMed negotiations and ACP-EU Economic Partnership Agreements. From 2000 to 2001 Hadil was a resident advisor to the Palestinian Ministry of Economy and Trade on trade policy and trade negotiations. Her academic activities include guest lectures at EDHEC, Nice, the American University of Central Asia in Bishkek, the Royal University of Law and Economics in Phnom Penh, and the Pontificia Universidad Católica del Perú in Lima. Hadil holds Masters degrees in International and Comparative Legal Studies from SOAS, London and Management from Boston University. Apart from her native Arabic she speaks English, German and some French.

  • Hannes Schloemann, LL.M. | Director

    is a trade lawyer and partner at MSBH Rechtsanwälte. His specializations include WTO and other trade negotiations (DDA in particular), WTO accessions, trade in services, trade in agriculture, goods/NAMA, trade & environment, TRIPS, WTO dispute settlement, S&D, anti-dumping, subsidies and sanctions, as well as regional trade agreements (EuroMed, EPAs), EU foreign trade law, climate change and general public international law. Prior stations of his career include Baker & McKenzie´s International Trade and WTO Practice Group, the office of an MP and the German Embassy in New Delhi. Hannes regularly teaches at academic institutions, including the WTI in Berne and the Universidad de Navarra. He is a member of the advisory board of the Zentrum für Außenwirtschaftsrecht in Münster. His publications include the award-winning 1999 American Journal of International Law article "Constitutionalization" and WTO Dispute Settlement – National Security as an Issue of Competence. Hannes speaks German, English, French, Italian, Spanish and some Arabic.


Core Team: Associates & Administration

  • Jennifer Hawkins, LL.M. | Associate

    is a trade lawyer. Jennifer advises developing countries on the law and policy relating to all facets of the international trading system, including but not limited to WTO law and policy. Jennifer is a member of the New York and Irish bars and she has studied in Ireland, France and Australia. Prior to joining WTI Advisors, she worked in the international trade practice group of an international law firm, was a consultant for the Southern African Development Community, and worked in the Legal Department of the IMF as well as in transaction advisory services for one of the four big professional services firms. Jennifer also interned at the Appellate Body Secretariat of the WTO and worked at the Journal of International Economic Law  as Editorial and Research Assistant to Professor John H. Jackson. Apart from her native English, Jennifer has a good level of French.

  • Kholofelo Kugler, LL.B, MILE | Associate

    is an trade lawyer. During her time at WTI Advisors, she has provided advisory support in trade in services and investment-related projects. Kholofelo is a member of the South African bar and has practised various aspects of corporate law and litigation at one of the top law firms in South Africa. She has also worked at a technical body of the African Union as well as for the South African government. She has completed internships at the Mexican Embassy in South Africa and in the Commercial Arbitration department of a corporate law firm in Buenos Aires, Argentina. Kholofelo completed the Master of Law and Economics (MILE) programme at the World Trade Institute in Bern, Switzerland in 2014 as one of the top graduates in her class. She also holds an LL.B degree (cum laude) as well as a Bachelor’s degree in Economics and International Studies. Apart from her fluency in English and various native South African languages, Kholofelo has a good level of Spanish and speaks some German.

  • Sacha Silva, MSc | Associate

    is a trade and development economist. During the past ten years, Sacha has advised public and private institutions on trade policy, agricultural competitiveness and diversification, trade negotiations (particularly in the WTO, regional and bilateral context), economic governance, regional integration, and development financing. His work experience includes extensive technical support to the African, Caribbean and Pacific (ACP) Group of developing countries in negotiating their trade relations with the European Union, Canada, United States, Australia and New Zealand. Sacha has worked as a consultant for, inter alia, the Caribbean Community’s Regional Negotiating Machinery, the Pacific Islands Forum Secretariat, the Commonwealth Secretariat, the UN Conference on Trade and Development (UNCTAD) and the Asian Development Bank. He holds a Bachelor’s degree in Political Science and Economics from the University of California at Berkeley and an MSc in Global Market Economics from the London School of Economics. Sacha speaks English, French and Spanish.

  • Marie Wilke, LL.B., LL.M. | Associate

    is a trade lawyer with particular expertise in RTAs, bio-trade and trade related aspects of international treaties. Marie’s skill-set includes training and teaching law for non-legal audiences, formulating negotiation proposals on disciplines, and assisting with the design and implementation of inter-agency and multi-stakeholder coordination systems. Her areas of expertise include ‘green’ trade disciplines, natural resources trade, access and benefit-sharing agreements, subsidies, services, investment agreements and WTO dispute settlement. As a legal advisor she has been engaged in a number of EU FTA negotiations, regional trade liberalization negotiations in Eastern Africa, the negotiations leading to the Nagoya Protocol on ABS, the WHO Pandemic Influenza Preparedness Framework and the WIPO Intergovernmental Committee. Previously Marie worked with ICTSD and Natural Justice and consulted for UNCTAD, IDLO, GIZ, the German Ministry of Economics and Technology (Robert Bosch Fellow) and the Smallholders Foundation Nigeria. Marie continues to support Natural Justice as a pro bono Associate and is a Member of the Centre for International Sustainable Development Law (CISDL) Group on International Economic Law. Marie holds and LL.B. and LL.M. (University of Helsinki) and speaks English, German and some French.



  • Lambert Botha, LLM, M.I.L.E

    is a founder and Director of HiltonLambert - Practitioners of Trade Law, Cape Town, South Africa and an admitted attorney with practice experience in the areas of public international law, intellectual property and international economic law. As trade practitioner his areas of practice include regional dispute settlement, agricultural trade, services trade, TRIPS, WTO dispute settlement; SPS, regional trade agreements and trade in energy goods and services. Energy trade is his special interest and he serves in his personal capacity on the World Energy Council Task Team on Trade in Energy Goods and Services. Lambert regularly teaches at South African universities in the area WTO law. He speaks English in addition to his native language Afrikaans. He is a keen mountain biker and enjoys good wine without necessarily debating the importance of GI - protection.

  • Prof. Thomas Cottier

    Managing Director of the WTI, Professor of European and International Economic Law and Director of the Institute of European and International Economic Law at the University of Berne. A former Head of Legal Services of the GATT Division, Swiss Department of Foreign Economic Relations, Deputy DG at the Swiss Federal Intellectual Property Office, member of various WTO/GATT dispute settlement panels and Swiss negotiator at the GATT Uruguay Round and on EEA negotiations, he is one of the key authorities on international trade and WTO law.

  • Sufian Jusoh, LL.M

    is a Barrister (England and Wales) and a Research Fellow with the NCCR Project at the WTI in Berne. He is based in Kuala Lumpur and Berne. Sufian has more than a decade’s experience in legal practice. His areas of specialization are IP law, franchising, international environmental law and laws relating to technology. Sufian was the legal advisor to a Malaysian Government science park where he advised on technology and the law, venture capital investment and patents in agriculture biotechnology. Sufian was also the legal advisor to the Malaysian Malay Chamber of Commerce and Labuan Liberty Port in East Malaysia. He also advised various interest groups in the formulation of the Malaysian Long Term Plan 2000–2010. Sufian speaks Malay and English.

  • Prof. Dr. Markus Krajewski

    is professor of public and international law at the University of Erlangen-Nuremberg (Germany) and a visiting professor at the World Trade Institute (WTI) in Berne. Previously he held positions at the universities of Bremen and Potsdam and at King's College London. His research interests include international and European law, in particular WTO law, trade in services, regional trade agreements (FTAs, Customs Unions), international investment law, and external relations of the EU. He is a regular consultant on WTO & international trade law for governmental institutions and non-governmental organisations. In 2009/2010 he was team leader of a pioneering WTI Advisors project under TradeCom on capacity building at the Faculty of Law of Addis Ababa University (and other Ethiopian universities) in support of Ethiopia's accession to the WTO. Since 2011 he is a member of the Committee on International Trade Law of the International Law Association (ILA). Apart from his native German Markus works in English and (to a lesser degree) French.

  • Dr. Christian Pitschas, LL.M.

    is a partner at MSBH Rechtsanwälte and a co-founder and former Director of WTI Advisors. Christian advises and represents clients on all matters relating to trade in goods and services, in particular in the areas of agriculture, SPS, TBT, NTBs, trade facilitation, subsidies, government procurement and dispute settlement, as well as EU law and public international law. Christian has fifteen years of professional experience, including positions as a trade lawyer with a major international law firm in Brussels, lecturer in EU and public international law at the Free University of Berlin and clerk with the Court of Appeals in Berlin. Christian regularly lectures at the WTI in Berne as well as the Europe-Institute of the University of Saarland and sits on the advisory board of the Centre for Foreign Trade Law in Münster. He frequently publishes on issues of international and EU trade law and policy. He speaks English and French in addition to his native German.

  • Dr. Luca Rubini

    is lecturer and deputy director of the Institute of European Law at the School of Law of the University of Birmingham. He is also a faculty member of the WTI (Berne) and of the ASERI (Milan). He has held visiting positions at the Institute of International Economic Law (Georgetown University), King’s College London and the European University Institute. Previously, he was lecturer at the University of Leicester and legal clerk to Advocate General Francis Jacobs at the European Court of Justice. Dr Rubini has acted as consultant in relation to trade and competition issues in the past and has worked with various NGOs. He teaches and does research in the areas of WTO law, competition law and EU law and has a particular expertise in the regulation of subsidies, having published among other things the Definition of Subsidy and State Aid: WTO and EC Law in Comparative Perspective (Oxford University Press, 2009). His recent research has focused on climate change issues. In this regard, he is currently working on a major project on a new WTO discipline for ‘green’ subsidies. He speaks English and Italian and has some knowledge of French.

  • Pierre Sauvé

    Deputy Managing Director and Director of Studies of the WTI and visiting lecturer at several academic institutions, including the LSE, the College of Europe and the University of Barcelona Law School, whose LLM programme in International Economic Law and Policy he co-directs. He is a Senior Fellow of the European Centre for International Political Economy in Brussels. Pierre served as Canada’s services negotiator on NAFTA and was a staff member at the BIS, the GATT and the OECD. In 2007, he was a member of the Warwick Commission on the future of the multilateral trading system. His research and practice focus is on the evolution of rule-making for services trade and investment and the impact that regional integration exerts on the MTS.

  • Dr. Christina Schröder, LL.M.

    was a Senior Counsellor in the Agriculture Division of the WTO (GATT) Secretariat when she left the institution after 33 years of service. She served inter alia as Legal Advisor / Panel Secretary on cases such as EC-Bananas, Korea-Beef and EC-Sugar. She now advises developing countries on issues related to trade in agriculture and fisheries, including the DDA negotiations on agriculture. She speaks Swedish, English, French and some Spanish and German.

  • Anirudh Singhal, PhD, M.I.L.E.

    is a Senior Research Fellow at the World Trade Institute, University of Bern, Co-leader of the NCCR's work programme on the impact assessment of trade and part of the faculty on the MILE Programme.  A PhD in Economics from the University of Sussex, Anirudh specialises in International Economics, Econometrics and Development. He has worked in international trade for close to eight years including at the WTO and the World Bank and has conducted specific research on trade in services, government procurement, preferential trade agreements, LDC market access, trade defence, trade facilitation, competition policy, trade in agriculture, SPS issues and trade and climate change. He has also published in these areas in academic journals and for the World Bank, the WTO, the European Commission, UNCTAD and the Commonwealth Secretariat. He is also affiliated with the Centre for the Analysis of Regional Integration at Sussex (CARIS) and has co-authored several reports on the impact of preferential trade agreements on excluded and partner countries. Anirudh graduated 'summa cum laude' from the MILE Program at the WTI and also holds a Masters degree in Economics from the Delhi School of Economics. His undergraduate degree was in Economics (Honors) from St. Stephen’s College, Delhi University.

  • Peter Tulloch, M.A.

    is a former Director of the Development and Trade Policy Review Divisions at the WTO (and formerly GATT) Secretariat. He is an economist by background, with 26 years of broad and in-depth experience at the Secretariat, including work on balance of payment issues, macro-economic policies, textiles and technical assistance as well as TPR and relations with developing countries. He has spent the past five years as a consultant on WTO issues for developing countries. Apart from his native English, Peter is fluent in French and reads Spanish.

  • Natasha Fiona Ward, PhD, M.I.L.E.

    is a trade policy advisor and partner at ACP International Trade Advisors. She leverages significant experience in designing, managing and delivering trade policy assistance in collaboration with senior government counterparts in a number of developing countries in Africa and the Caribbean. Her engagements focus on advising governments and the private sector on trade policy developments and reforms and creating an enabling environment for private-sector led growth.  She has worked with international development agencies, bilateral development partners, business support organisations and academic institutions. Natasha holds a Master of International Law and Economics degree (summa cum laude) from the World Trade Institute in Berne and a Doctorate in International Relations from the University of the West Indies. Apart from her native English she speaks Spanish and French.

  • Hilton Zunckel, M.I.L.E.

    is a founding partner and Managing Director of HiltonLambert - Practitioners of Trade Law in Cape Town, South Africa. His areas of expertise include agriculture, trade remedies, accessions, services and African regional trade issues. Hilton served as the Assistant Executive Director to a leading South African trade association where he formed part of South Africa’s representation to the WTO Committee on Agriculture, the International Grains Council, the International Food Aid Convention and Southern African Customs Union  negotiating forums. He has also been a senior trade advisor to the law firm Floor Inc. Attorneys and a senior researcher with regional trade capacity building centre. He has acted as co-counsel to the African Caribbean and Pacific Group (ACP) and the West African cotton initiative (C4) in the Doha negotiations and his firm was involved in an advisory role on South Africa’s first outing in WTO dispute settlement. He is listed on the roster of WTO panellists. Hilton lectures at several Southern African universities and publishes regularly on trade issues. He is an avid consumer of agricultural products.