International Union of Architects
Member Area
Elected Team - Bureau


The UIA Bureau includes the President, Immediate Past President, Secretary General, Treasurer, and five Regional Vice-Presidents.  The Bureau members meet regularly between sessions of the UIA Council, to which they also belong.

  • Thomas Vonier - USA
    UIA PRESIDENT - Thomas Vonier has worked on the challenges of urbanization, conflict, insecurity, and changing climate patterns. He participated in COP 21 (Paris) and COP 22 (Marrakesh), as well as in Habitat III (Quito). He makes regular media and conference appearances on matters related to the built environment, most recently on National Public Radio’s All Things Considered, speaking on urban security. Based in Paris and Washington DC, Thomas Vonier works with public and private clients to secure industrial operations, hotels, universities and commercial facilities. He also works with municipalities to improve urban security. A board certified security professional, Thomas led ground-breaking research for United States embassies and consulates, resulting in landmark recommendations to the US Secretary of State. He has lectured widely on architecture, and was a research affiliate with the Laboratory of Architecture and Planning at MIT.
  • Esa Mohamed - Malaysia
    UIA IMMEDIAT PAST PRESIDENT - Esa Mohamed is a graduate of University of Newcastle, Australia (Bachelor of Architecture) and the University of Sydney (Master in Town and Country Planning). He is the founder and the Managing Director of the architectural and planning firm, Akitek Jururancang (Malaysia). Some of his major architectural projects include the Kuala Lumpur International Airport, Kuala Lumpur Convention Centre, and the University Malaysia Pahang. He was also involved in several major projects in China, Pakistan and Saudi Arabia. Other positions held include Chairman of ARCASIA (Architects Regional Council of Asia), 1st Chairman of the ASEAN Architect Council, Fellow of the Royal Australian Institute of Architects and member of Royal Institute of British Architects. Esa Mohamed has obtained several prestigious awards such as the Aga Khan Award for Architecture. For his contribution to the advancement of architecture and the country's development, he was conferred the Honorary Doctor of Architecture by the University of Newcastle, Australia.
  • Serban Tiganas - Romania
    UIA GENERAL SECRETARY - Serban Tiganas lives in Cluj-Napoca, Transylvania, Romania. Following his architectural studies in Bucharest he kick-started his career by winning several competitions and working in different cities and teams. In 1997 he founded Dico and Tiganas, architecture and engineering, an interdisciplinary internationally awarded firm. Since 2001 he became an activist for the profession in OAR, the Order of Architects, including two mandates as president, 2010 – 2018. He contributed internationally in ACE as board member and in UIA as council member. He is an associate professor at the Technical University of Cluj – Napoca and holds a PhD in architecture.
  • Pierre Sauveur - Belgium
    UIA TREASURER - An architect by training, (University of Liège - 1971) Pierre Sauveur has worked in the construction, renovation and restoration of residential, office and commercial buildings. Today he devotes his time to two non-profit associations over which he presides. He developed the quarterly review "Cahier de l'Espace Public" published in Belgium, in French and Dutch. A former president of the Royal Federation of Architects of Belgium and of the National Council of the Belgian Order of Architects, he is currently a member of the UIA Competition Commission since 2014.
  • Lorenz Bräker - Switzerland
    UIA VICE-PRESIDENT REGION I - After graduating as an architect from the Swiss Federal Institute of Technology in Zurich (ETH), Lorenz Bräker worked in teaching and research (anonymous architecture) at the SFIT in Lausanne (EPFL). He also studied philosophy, history and art history at the University of Zurich (with a focus on history of ideas, history of architectural theory and history of urban planning). Since 1989, he has been running an architectural practice in Lausanne. He is an active organizer and jury member for competitions as well as a court expert. For 10 years, he was president of the architects of the Swiss Society of Engineers and Architects (SIA) and since 2011 president of the Swiss section of the UIA and member of the UIA Education Commission.
  • Nikos Fintikakis - Greece
    UIA VICE-PRESIDENT REGION II - Nikos Fintikakis graduated as an architect from the National Technical University of Athens, and Heriot-Watt University, Edinburgh. He is a Partner and Director of Synthesis and Research Ltd in Athens. He was previously the Director of the UIA Work Programme Architecture and Renewable Energy Sources-ARES. Other past-positions include Board Member of the Association of Greek Architects, representative of the Technical Chamber of Greece in the Historical Buildings Committee of the Greek Ministry of Culture, Member of the Architecture Committee of the Ministry of Environment. Nikos Fintikakis has received awards for national and international projects in Greece and abroad ( His architectural work is mainly in the fields of Bioclimatic and use of Renewable Energy Sources and Environmental Architecture.
  • Roberto Simon - Brazil
    UIA VICE-PRESIDENT REGION III - Roberto Simon graduated from Federal University of Paraná in Brazil in 1981, receiving his MSc from Brazil’s Federal University of Santa Catarina in 2010. He has been Executive Chairman & Architect in Studio Domo since 1982, completing design and construction for hospitals, universities, colleges, schools and residential developments. For the past eighteen years, he has been a professor at UFSC & UDESC in Santa Catarina, Brazil. He was a Visiting Professor at the University of Virginia from 1991 to 1992. He has been President, Vice President and member of the Superior Council of the Brazilian Institute of Architects – IAB as well as Federal Council member and founder of the Brazilian Council of Architecture and Urbanism - CAU, member of the UIA Council and is currently UIA Vice-President – Americas. He has participated in biennials, international and national competitions as well as national and international professional commissions.
  • Jong Ruhl Hahn - Korea
    UIA VICE-PRESIDENT REGION IV - Jong-Ruhl HAHN has been serving UIA over 10 years as Alternate Council Member (2008-2011), Council Member (2011-2014), UIA 2017 Seoul Congress President (2015-2017. After receiving a Master of Architecture from University of Michigan, Ann Arbor, Mr. HAHN built up his main career in SAMOO Architects (1993-2016), becoming Senior Principal. He has received about 20 national architecture awards including Presidential Medal of Culture . As Region IV Vice President, he dedicates his efforts to environmental improvement questions.
  • Mohammed Munyanya - Kenya
    UIA VICE-PRESIDENT REGION V - Mohammed Munyanya is one of the Directors of AIA Architects Limited, previously Adventis Inhouse Africa Ltd incorporated in 2005 after a merger between Adventis Limited and In-House Architects. He holds a Bachelor of Architecture Degree from the University of Nairobi. He has had a vast experience in working with several firms in Nairobi and overseeing private and public projects in the country. Mohammed Munyanya was an assistant lecturer at the Kenya Polytechnic between 1990 and 1991. He has represented architectural organizations at national and regional levels having held positions in the East Africa Institute of Architects and the Africa Union of Architects. He currently serves as the Chairman of the Architectural Association of Kenya.
Reference documents
Heritage and Cultural Identity

General Secretariat

The UIA General Secretariat, placed under the responsibility of the Secretary General, is the Union's executive body and the administrative centre for the coordination of relations between the UIA Member Sections and their activities.

The General Secretariat assists architects and architecture students in getting into contact with professional colleagues throughout the world, from professional organisations and architectural schools to museums and media.

The General Secretariat helps architects to keep up to date with UIA activities, its partners and Member Sections.

General Secretariat of the International Union of Architects

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