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About 02

about us

Our Team

 A multicultural team of committed professionals:

At Ryan VAT Systems, we understand that the value we bring to our clients is the value of the professionals we employ. Our teams are comprised of a unique multicultural mixture of tax experts, lawyers, economists, accountants and business administration professionals, with extensive international experience. Over fifteen nationalities are represented within Ryan VAT Systems’ offices.


Our consultants count on their expertise, on their team management as well as the company’s network, to provide our clients with high quality global solutions for all their international taxation issues.


A management team at your disposal:

Our managers relentlessly promote excellence and keep their teams focused on practical guidance

and straight-to-the-point advice. Whenever necessary they provide clients with their direct support.


Andreas Kozanitis founded VAT Systems in 2004 and has led the group ever since. He has a postgraduate degree in Private International Law from the University of Paris II Panthéon – Sorbonne. Before founding VAT Systems he was Legal Director of a group of companies in the fashion industry and Director of Development and Sales Export Manager for consulting companies specialized in international VAT.

Languages: French, English, Greek, Italian

Associate Partner - VAT Optimisation

Filipe Nogueira is the group’s Chief Operating Officer and works out of our offices in Portugal. He is a lawyer and a chartered accountant with almost 20 years of experience in VAT. Up until 2016 he has been heading the VAT group of Deloitte in Porto, where he was an Associate Partner. 

Languages: Portuguese, English, Spanish

Justin H. MILLER
Director – Compliance & Consulting
Justin Hayden Miller is Director within the group. He holds a degree in Law and he studied at the Inns’ of Court School of Law, London. He has 20 years’ experience in international indirect taxation, and has worked as a Barrister and as Avocat. He has worked for HMRC, and he was Director in the Indirect Taxes & Customs department at TAJ / Deloitte for eight years and thereafter Director of the Indirect Taxes Department for the Financial Sector, at Ernst & Young in Paris.

Languages: English, French

Director – Compliance & Consulting

Mariana Principe is the Director of the Compliance team. Before joining VAT Systems, Mariana worked during 5 years at Deloitte in Porto as a Senior in Tax. She graduated in Economics and has a Master degree in Management from Católica University of Porto, Portugal.

Languages: Portuguese, English, Spanish

Senior Manager – Compliance & Consulting

Aline Rodrigues has a Master II in Fiscal Law of the University Assas-Paris II and a Master II in Community Law of the University of Paris XI. She counts 17 years of experience as French lawyer specialized in international indirect taxation. She has worked for several Big 4, of which 7 years as Senior Manager in the department of Indirect Taxes & Customs at FIDAL and then 4 years in the equivalent department at Ernst & Young in Paris.

Languages: French, English

Senior Manager – Tax Recovery Operations

Julie Lesage joined VAT Systems as consultant in 2007. After holding several management positions within the two departments Compliance and Tax Recovery, today she leads the Tax Recovery Operations department. She is also responsible of the network of partners of VAT Systems. She graduated in Business Law and Taxation from the University of Lyon 3 and from the Queen’s University of Belfast, Northern Ireland.

Languages: French, English, Danish

Verena HENON
Director – Marketing & Sales

Verena Henon is Senior Manager within the Marketing & Sales department. Before joining VAT Systems in 2006, she held the position of Export Account Manager and Key Account Manager in sectors as the automotive, the digital imagery and the financial consulting. She holds a double Master degree in International Trade at the International Institute of Trade and Distribution in Paris and at the HES Rotterdam University, the Netherlands, with a specialization in International Trade Development.

Languages: French, German, English

Senior Manager – Corporate Projects

Nuria Profitos supervises transversal projects involving our group. Nuria joined VAT Systems in 2007 as Account Manager. Before VAT Systems, she worked as Purchase manager in Europe and as Investment manager to accompany foreign investments in France. She holds a Master II in International Trade at INALCO in Paris and a Bachelor degree in Political Sciences at the University of Paris I Panthéon – Sorbonne.

Languages: French, Spanish, English

Carsten MUNDT
Director – VAT Systems Hungary

Carsten Mundt joined VAT Systems in 2007 as co-founder of VAT Systems Hungary, of which he is General Manager. He is also the founder of an accounting firm in Budapest. He has a Masters in Economics from the University Corvinus of Budapest, Hungary.

Languages: German, Hungarian, English

Our Companies

VAT Systems is an international group of companies the purpose of which is to act as a one-stop-shop for all international taxation issues in over 50 countries.

Founded in 2004, our group is currently headquartered in France. We operate in Europe and around the world through  our own subsidiaries and our international network of tax specialists.

VAT Systems Group is composed of the following companies:

  • VAT Systems France
  • VAT Systems UK
  • VAT Systems Portugal
  • VAT Systems Spain
  • VAT Systems Hungary
  • VAT Systems Bulgaria
  • VAT Systems Italia
  • VAT Systems Romania


Our expertise covers tax regulations of more than 50 countries, in Europe and around the world.

Our operations are organised into two departments, Compliance and Consulting and Tax Recovery Operations. We provide a full range of services to Key Accounts and Mid-caps established in over 30 countries.

VAT Systems is a member of the International VAT Association (IVA) working at the forefront of shaping EU policy on VAT issues 

Our Network

Our Subsidiaries
Our partners

While we assist our clients focusing on a comprehensive view of all their operations in different countries, we need to rely on local know how in order to ensure that their operations are in compliance with the regulation of every country where they operate.

For this reason, through our many years of experience in indirect taxation, we have established a network of trustworthy partners in those countries where our clients operate. We work in close collaboration with local tax advisors, accountants and lawyers, including Big 4 firms and members of renowned professional alliances.


VAT Systems’ partners are selected based on their proven track record in their field of expertise, their internal resources and their in-depth knowledge of the national taxation system.

 While VAT systems will rely on its partners for local expertise, we will remain your unique point of contact for all taxation issues abroad, thus maintaining a global view on your operations.

Our values

At VAT Systems we believe that success is based on strong professional values. Strong values and satisfied clients have allowed VAT Systems to enjoy, year after year, double-digit growth, while maintaining margins, improving the quality and broadening our range of services.

We work closely with tax authorities and we rely on a network of local partners, being experts in their individual domains. We work with IT tools specifically designed to support us in our work, control quality, measure performance and generate reporting for our clients.


We approach complex situations in a pragmatic manner in order to meet our clients’ expectations:

We offer to our clients a value one-stop-shop solution for all their international operations, providing them with security or savings.


This efficiency translates into a continuous growth. We are constantly improving our processes and expanding our knowhow by recruiting new talents to strengthen our team. An ever increasing number of clients revert to us for support in their international operations.  


We keep our customers fully informed at all times on the services we carry out and on the related costs is at the heart of our business.

✓ Transparency of fees: Our fees are based on the time spent to provide our services. Nevertheless, for the sake of forecasting, we have established fixed fees for main Compliance tasks and we apply success fees on “no cure no pay” basis for Tax recovery operations.

✓ Transparency of operations: Our online reporting is a tool that provides the data that our clients’ accounting departments need for their operations.

Client Satisfaction

Working in close cooperation with our clients, our goal is to service them to the best of our ability.

Every year over 90% of our customers choose to continue working with us the following year. Key Performance Indicators help us track our results in order to continuously improve our procedures.

VAT Systems France and Portugal are certified ISO 9001: 2015 for all their operations and VAT Systems France is qualified OPQCM.