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Jiries Saadeh

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Fietta LLP


Jiries Saadeh is an English-qualified lawyer and Solicitor-Advocate (Higher Courts Civil Proceedings). He has been practising law for almost 15 years and is a Partner at Fietta LLP.  The Legal 500 has recognised Jiries as one of the “Next Generation” of leading public international law practitioners, describing him as “one of the most skilled lawyers around”.

Jiries advises States, international organisations and commercial entities on a full spectrum of public international law matters, including State sovereignty, international humanitarian law, sovereign and diplomatic immunity, UN, EU and national sanctions regimes, boundary disputes, the protection of foreign investments and human rights.

Jiries’ extensive contentious work includes representing State and investor clients in international investment treaty and commercial arbitration cases under the ICSID, UNCITRAL, LCIA and other institutional rules, managing associate teams in all phases of proceedings. He helped secure an award against Venezuela which constitutes one of the largest in ICSID’s history.  He also has significant experience in the law of international organisations, particularly the law and practice of the United Nations and international administrative law.

Jiries has taught classes at UCL, Sheffield and other universities and is adjunct professor of law at Pepperdine University, where he co-teaches the International Investments Dispute course (alongside Lucas Bastin of Essex Court Chambers).  He sits on the consultation board for Practical Law’s arbitration service, alongside a number of eminent practitioners and academics in the field, where he advises on developments in international arbitration so as to ensure that the Practical Law resource stays preeminent in its field.  Jiries is a member of the advisory committee for a new Advanced LLM in International Dispute Settlement at Leiden University and also acts as a rapporteur for Oxford International Organisations, a repository of acts and practices of international organisations established by OUP, where he is providing input on the arbitral tribunals of the United Nations. 

Jiries holds a BA/MA from the University of Oxford and an LLM in public international law from the University of Leiden. Prior to joining Fietta, Jiries worked as a Legal Officer at the United Nations in New York, where he litigated before the United Nations Dispute and Appeals Tribunals.  He trained and practised for many years at Slaughter and May and also worked with Stephen and other members of the Fietta team at a previous firm from 2011 until 2014.


Fietta LLP, partner (2018 onward), counsel (2016-2018); United Nations, legal officer (2014-2016); Volterra Fietta, associate (2011-2014); Slaughter and May, associate (2005-2009); laughter and May, trainee solicitor (2003-2005)


English (native), Arabic, French and German (conversational


Solicitor-Advocate (Higher Courts Civil Proceedings) (2016)

LLM (cum laude) (2010), University of Leiden

M.A. (Oxon.) (2006), University of Oxford

Admitted to practise in England & Wales (2005)

Legal Practice Course (2002) and Postgraduate Diploma in Law (2001), BPP Law School, London

B.A. (2000), University of Oxford

London: Dispute resolution

International arbitration

Within: International arbitration

Fietta LLP 'has a large case load and has talent from top to bottom'. The firm is widely respected for its experience in investor-state arbitration. Stephen Fietta QC, who took silk in 2019, has secured numerous substantial awards for his state and investor clients; Jiries Saadeh and Ashique Rahman were promoted to partner and counsel, respectively. Oonagh Sands and Laura Rees-Evans are the senior associates to note.

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Public international law

Within: Next Generation Partners

Jiries Saadeh - Fietta LLP

Within: Public international law

Arguably, 'one of the leading boutique practices in public international law', Fietta LLP has substantial expertise in investment treaty proceedings, maritime boundary disputes and human rights matters. The practice is regularly instructed by sovereign states, corporate, individual and NGO clients across a wide spectrum of public international law matters. Stephen Fietta QC has 'an outstanding reputation' in investment treaty arbitration and often leads on high-profile and substantial claims, including acting for a large group of Greek investors in an ICSID arbitration against the Republic of Cyprus arising from the Cypriot financial crisis and European Union/IMF bail-out of 2013. Also of note are recently promoted partner Jiries Saadeh, counsel Ashique Rahman and associates Oonagh Sands and Laura Rees-Evans.

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