United Tax Network Worldwide – Global Expat Solutions
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Key People

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Siegfried Jagga
President
Tel: + 31 651 666 658
E-mail:  Siegfried.Jagga@unitedtaxnetwork.nl

Siegfried Jagga began his career at one of the predecessors of the ING bank as personal assistant to the management team. After finishing his studies in Law & Economics (BBA), he was employed by Arthur Andersen & Co. Siegfried was then hired by Price Waterhouse to establish the global mobility tax department in the Hague. He did so successfully and also headed the Global Employment Solution team after the merger of Price Waterhouse and Coopers & Lybrand.  In 2002 Siegfried founded an independent expatriate tax consulting firm which is now the exclusive member firm of United Tax Network in the Netherlands. Siegfried provides realistic and usable solutions to clients on global mobility tax issues on a daily basis. His personal connection with people is also reflected by the various social projects Siegfried is involved with.

Filip

Filip Camps
Vice-President
Tel: +32 468 142 290
E-mail:  Filip.Camps@unitedtaxnetwork.be

Filip Camps has been a partner since 2009. Filip obtained a degree in Economics at the University of Hasselt in 1995 and a supplementary degree in Tax Law at the FHS in Brussels in 2000. Filip lectures on individual taxation at the University of Leuven/Limburg. Filip is a regular speaker at seminars and conferences concerning global mobility issues and writes articles about this subject for various magazines.

Brent Bergan - foto

Brent Bergan
Marketing & Global Proposals Leader
Tel: + 1 650 947 9490
E-mail:  Brent.Bergan@glomotax.com

Brent co-founded Global Mobility Tax in 2003. Prior to this, Brent spent 7 years at Oracle Corporation as Director of Tax – International Assignments and was a Senior Manager with Ernst & Young in the Global Employee Solutions Group in Palo Alto, California. Brent started his career at Arthur Andersen in 1985. Brent received a Bachelor’s of Science degree in Accounting at Indiana University and is a Certified Public Accountant. Brent is past Board Member and Vice-President of Bay Area Mobility Management (BAMM).

Celine rang - foto

Celine Rang
Education & Knowledge Sharing Leader
Tel: +33 1 42 94 10 10
E-mail: Celine.Rang@almenide.com

Céline Rang co-founded Almenide Avocats in 2008. She began her career in 1993 at Price Waterhouse before joining, in 1996, the Human Capital department of Ernst & Young in Paris. Between 2004 and 2008, she was the head Partner of the HR & International mobility department at Bignon Lebray & Associés.
Celine advises large firms on global mobility (tax aspects and social security issues), controlling and reducing the overall costs related to international assignments by a social and fiscal approach, assists on setting up international mobility policies and provides personalized assistance to international employees and mobility managers (tax residency, social security coverage, global compensation, preparation of tax returns, etc.).
Celine is Attorney-at-Law, Paris Bar, she attended the Institute of Political Sciences, Aix en Provence in 1990 and gained a Master’s degree in International trade in 1992, Master’s degree (DESS) in international corporate law and tax in 1993 and she is a lecturer at Liaisons sociales & Lamy formations for the “Management of international mobility” workshops and teacher at Aix-en-Provence University.

Jorg Assmann - foto

Jörg Assmann
Client Care & Escalation Leader
Tel: + 49 89 530 317
E-mail: Jorg.Assmann@unitedtaxnetwork.de

Jörg is heading up the office in Munich as of 1990. Jörg finalized his study at the Ludwig-Maximilian-University in 1987 where he obtained his degree as Magister Economies (Diplom Kaufmann) and his Steuerberater degree in 1989. Jörg and his team provide global mobility tax and legal assistance to international clients with a special focus on international tax and social security questions concerning artists.
Jörg is also co-author of “Der Impuls / L’Élan” concerning the economic relationship between Germany and France, edited by CEPS in 2008 and presented officially in 2008 in the German embassy in Paris. He is an author of the F.A.Z. Article “Steuerkeule aus Paris für Reiche und Unternehmen” concerning tax questions between Germany and France, edited on 6th February 2013. He is the author of the statement “Internationale Wettbewerbsfähigkeit des Steuer- und Sozialversicherungsrechtes”, comparing studies between Germany and France, analysis with proposals for a legal reform in Germany, written in 2011 and presented to several political parties in Germany from 2011 onwards.

Sarah Robert - foto

Sarah Robert
IT & Project Management Leader
Tel: + 44 (0) 118 955 1011
E-mail: Sarah.Robert@unitedtaxnetwork.uk

Sarah Robert heads up the United Tax Network team in the United Kingdom. Sarah graduated with a degree in French with German (BA Hons) at London University in 1987 before qualifying as a chartered accountant with Coopers & Lybrand. Sarah moved into international tax in 1989 and has spent the rest of her career in this field. She worked in global mobility for 20 years with two of the “Big 4” firms, including 6 years working in Paris where she advised both French and overseas companies and their assignees. Once back in the UK she was  seconded to the tax research department of one of the major UK political parties for 5 months.
Sarah provides advice and support to companies and their assignees on global mobility issues including UK and international tax and social security reviews. She gives advice on assignment structures and planning as well as cross-border corporate compliance obligations and tax returns. She has written articles which have featured in various publications and presented at many events, including the French Chamber of Commerce in the UK as well as alongside UK Trade & Industry.