Juan Valderas | DI | Disputes and Investigations

Juan Valderas

Managing Director
Juan Valderas | DI | Disputes and Investigations
Quick facts
20+ years of forensic experience
200+ times acting as expert in national and international courts and arbitration
Fluent in the use of forensic technology and analytics
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Juan Valderas is the Leader of Alvarez & Marsal’s Disputes and Investigations practice in Spain.

He brings more than 25 years of accounting experience, and more than 20 years of specialist experience in financial investigations and disputes, serving in both advisory and expert witness-related roles. 

Mr. Valderas commenced his professional career in auditing at KPMG before joining the London forensic department and was key to setting up the firm’s forensic department in Spain. In 2003, he joined Deloitte in Spain, where he built and led lead its Forensic department and was also appointed as Deloitte Forensic Leader of Europe, the Middle East and Africa.  Between 2015 and 2018, he joined and led FTI’s Forensic practice in Spain.

As a full-time forensic practitioner for more than 20 years, Mr. Valderas experience includes national and international investigations (fraud, corruption, accounting manipulation and other regulatory investigations), independent expert in litigation before both national and international arbitration courts (damages, loss of profit, commercial disputes, acquisition price adjustments, unfair competition, etc. having given evidence in more than 200 cases) and insolvency related assignments (advisory, court appointed administrator).  

Mr. Valderas has worked across Europe and Latin America for lawyers, regulators, and public and private sector clients across a range of industries including, advertising, construction, retail, shipping, energy utilities, automotive, manufacturing, telecoms, financial services and professional services. He also brings extensive experience handling and reviewing large volumes of electronic data, using advanced forensic computing and data analytical techniques.

Mr. Valderas is perceived in the Spanish market as an expert forensic practitioner and, over the years, he has been interviewed, quoted and led some publications that included thought leadership pieces by Juan himself.  

Mr. Valderas is internationally recognized as a leading forensic accountant by Who’s Who Legal, in its ‘Investigations’ 2016, 2017 and 2018 editions. He is described as one of Spain’s leading experts on fraud-related investigations and also “respected across the continent for his work on regulatory-related issues”.

Mr. Valderas earned degrees in both law and economics from ICADE (Comilla University in Madrid). He is a qualified Auditor and a Certified Fraud Examiner.