Pietro Sansonetti

Rayan Houdrouge advises and represents Swiss and multinational companies as well as international organizations on all employment law matters. He has an extensive experience in executive transfers, compensation packages, work regulations, internal audits and collective procedures such as business transfers and collective dismissals. Rayan Houdrouge is also an accredited social security expert (Swiss federal certificate) and regularly assists clients in matters related to social security and p...

Partner Sidonie Morvan has 20-years experience in real estate law with a wealth of expertise in construction law, having expedited developments in both the private (real estate transactions, brokerages, contracts for architects and builders, and leases) and public (planning and construction permits) sectors. Ms Morvan regularly advises developers, architects, real-estate agents, general contractors and property owners on the day-to-day management of their businesses, and can represent them be...

Pierre-Alain Guillaume is a tax partner with Walder Wyss. He specializes in Swiss and international taxation. His mission is to reduce our clients’ tax burden to the bare minimum and to prevent any tax risk at their level, while complying fully with applicable tax rules. He handles matters related to direct taxes (individual income tax, wealth tax, corporate income tax, capital tax) as well as to indirect taxes (VAT, withholding tax, gift tax and inheritance tax). He provides the follow...

Thomas Goossens is an expert in the fields of banking and financial law, investment funds and corporate law. He regularly advises banks, securities dealers, financial institutions and trading companies, and assists promoters, asset managers of Swiss and foreign investment funds on regulatory matters. He also advises start-ups, entrepreneurs, investors, buyers, sellers and financial sponsors in all kinds of corporate finance deals, mergers and acquisitions, private equity, refinancing and proj...

Vaïk Müller is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Corporate Law. Vaïk, who practices law in Geneva, Switzerland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Vaïk is held by other top lawyers in the same geographic and legal practice area.

Olivier Sigg is a partner in the Private Clients team as well as an experienced employment lawyer. He heads our Geneva office. He is known, both in Geneva and in London, where he worked for one year, as an expert in complex crossborder matters and is regularly instructed by foreign lawyers, in particular from common law jurisdictions. Olivier Sigg’s private client practice includes various estate-planning techniques. In particular, as a TEP expert, he specialises in trusts, foundations,...

Julien Witzig is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Julien, who practices law in Geneva, Switzerland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Julien is held by other top lawyers in the same geographic and legal practice area.

Carl Heggli is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates and Wealth Management Practice. Carl, who practices law in Geneva, Switzerland, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carl is held by other top lawyers in the same geographic and legal practice area.

Manuel Bianchi della Porta advises entrepreneurs and companies. He assists them for their projects and when important operations are ahead (acquisitions, transmissions, restructuring, etc.). He helps them assess risks/opportunities and take difficult decisions. He is also on their side when weather turns bad. His relationship with clients is defined by personal commitment and availability. Recognized for his thoroughness, pragmatic approach and sense of priorities, he never loses sight of the...

Adriano Antonietti advises domestic and foreign banking and financial institutions, as well as collective investment schemes and asset managers on a wide range of matters, in particular regulatory issues, private placements, the drafting of banking contracts and certain tax related matters (FATCA, CRS). He also defends banks and their clients in a number of disputes and deals with all aspects of corporate and commercial law. His main fields include financial products and services, including r...