Board members

Board Members

Nonna P. Leontyeva


Nonna is a lawyer qualified in Russia, with over ten years of experience in Law and Compliance. Having worked in law firms and in-house in Russia, Nonna is now based in Zurich, Switzerland. She has been a member of the EYBA since 2008, and a part of the Executive Committee since 2014.

Guillaume Tatoueix

Vice President

Fédération Nationale des Unions des Jeunes Avocats. Guillaume is a French “Avocat” practising in Toulon, French Riviera. He practises in the field of real estate/construction law, commercial law and Enforcement law. Guillaume teaches also in the University of Toulon and he learnt information science and new technologies while completing his degree.

Daniela R. A. Valdez

Immediate Past President

Daniela is a senior legal professional based in London who specialises in International Dispute Resolution, and Commercial Litigation, with a particular interest in EU Law. She is also part of the London Young Lawyers’ Group ("LYLG") Executive Committee. On her spare time, Daniela volunteers as an Amnesty school speaker.

Joyce Herrent


Joyce is a Belgian lawyer based in Mons, near Brussels. She set up her law practice in 2011, where she specialises in the fields of civil litigation, property law, guardianship, and tutelage. She was active in the young bar association of Mons between 2007 and 2013, acting in different capacities including elected chair. As the EYBA’s Partnerships Officer, she will work towards strengthening existing ties and forging new ones. To contact Joyce, please use the website's contact form.

Agatha Bulha


Agatha is a Portuguese qualified lawyer with experience gained working in UK, Spain and Portugal with focus in foreign investment, real estate and corporate law. Currently she is specializing in IP law and provides legal assistance to start up companies and to the Portuguese independent music industry..

Michalis Mittas

Executive Officer

Michalis is a greek lawyer to the court of appeals, based in Thessaloniki. He is Chair of the Trainee Lawyers' & Young Bar Association of Thessaloniki since 2014. He has been working as self - employed lawyer since 2013 and he specialises in Administrative, Tax, Social Insurance, Labour and Immigration Law. He is also a PhD Candidate in Public Law at Aristotle University of Thessaloniki. He has been involved with the refugee crisis, offering support as volunteer and legal advisor to greek and international NGOs since 2016.

Asal Schmitt

Executive Officer

Asal is a German attorney at the law firm Brinkmann Rechtsanwälte in Köln (Cologne) working in the fields of insurance, corporate and contract. Her previous experiences include working in Düsseldorf, Germany and Pittsburgh, USA. Asal has a Masters degree in Japanese and Corporate law.

Simon Lafrance

Executive Officer

Simon is a London based lawyer specialising in derivatives. He works for investment banks and focuses on EU financial regulation and contracts between market participants. Past and current social involvement includes supporting public art exhibitions and acting as mentor for the young interested by the legal profession.

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