Future Leaders

Sebastiano Nessi is a senior associate in Schellenberg Wittmer's Geneva office. Trained in both civil and common law, Sebastiano specialises in international arbitration and commercial litigation.

Sebastiano’s clients and cases have spanned most continents, including Europe, Asia, South America and Africa. He has handled arbitrations under the rules of the ICC, LCIA, UNCITRAL, SCC, SCAI and before the PCA.

Sebastiano has represented states, state-owned entities and private companies in complex multi-jurisdictional disputes across a wide range of sectors with a particular focus on energy, commodities, pharmaceuticals, joint ventures, aerospace, sports and construction disputes. Sebastiano has also acted as counsel in investment treaty cases, advised clients on the structuring of their investments, as well as states on the negotiation and drafting of trade and investment treaties. Sebastiano regularly sits as arbitrator.

Sebastiano's recent expertise in arbitration includes representing: a major European energy provider in a price review arbitration concerning hydraulic energy pricing matter; the Russian Federation in an investment arbitration matter in proceedings before the Swiss Supreme Court; and the largest Asian multinational conglomerate in resisting emergency arbitration proceedings and in subsequent ICC arbitration proceedings. 

Sebastiano Nessi has written and spoken widely on arbitration, as well as teaching commercial and investment arbitration at the University of Paris I, Panthéon-Sorbonne and Sciences Po Law School (2013–2017).

Sebastiano Nessi graduated from the University of Geneva in 2004 (summa cum laude) and was admitted to the bar in Switzerland in 2006. In 2009, he earned a Master of Laws (LLM) from Columbia Law School (New York). In 2015, he obtained the CAS in arbitration jointly offered by the Universities of Lucerne and Neuchâtel.