Our People

Juan Sáez is a Senior Partner at Martello, leading the firm’s operations across MENA and LATAM. He specialises in independent project advisory and dispute resolution on major capital projects worldwide. He regularly provides expert witness testimony on delay, disruption, and acceleration and has been recognised by Lexology as a Global Elite Thought Leader in Arbitration since 2023.

Juan has given evidence in high-profile international arbitrations before distinguished tribunals and construction arbitrators. He is recognised for his ability to distil complex technical and programming issues into clear, decision-ready analysis, supporting tribunals and parties in reaching well-reasoned conclusions. Fluent in English, Spanish, and French, he regularly supports multilingual proceedings across jurisdictions.

Juan advises governments, developers, contractors and funders on complex, high-value disputes. Based in Dubai, he supports clients across Latin America, Europe, Africa, the Middle East, and Asia.

His project experience spans the energy sector (combined cycle, hydro, solar, wind, coal, and nuclear), oil and gas (onshore and offshore), real estate, manufacturing (including rolling stock and aviation), large-scale infrastructure (bridges, roads, rail, metro, airports, water, and waste), as well as social infrastructure and data centres.

Juan holds a double engineering degree from École Centrale Paris and Universidad Politécnica de Valencia, and an applied economics degree from Université Paris Dauphine.

“Juan Sáez is a top delay expert in the Middle East, advising clients on large infrastructure projects. He often acts in international arbitrations, with market sources praising his calm and technical excellence.” Lexology Index, Arbitration

“One of the best delay experts I have ever used — technically excellent, exceptionally well prepared, and able to simplify complex delay issues for a lay audience.” Partner, International Law Firm