Mitrani Caballero’s compliance and crisis management mandates frequently span multiple jurisdictions and require careful coordination of US, EU, UK and UN regulatory regimes. The practice is co-led by Mariela Inés Melhem, who advises senior management and audit committees on implementing global anti-corruption programs and steering sensitive investigations, and Cristian Mitrani, who concentrates on white-collar crime and corporate crisis management. Primary support comes from senior associates Agustina De Nicola, who assists with the tailoring of compliance plans across AML, anti-corruption and data protection; and the Uruguay-based Paula Saccone Spagnuolo, who handles compliance and due diligence in transactional and commercial contract contexts. The wider bench includes semi-senior Denis Márquez, who analyses codes of conduct and regulatory policies; and intermediate Florencia Lacordelle, who assists on economic sanctions and export control risk assessments. Former partner María Paula Díaz and senior counsel Sofía Amuchástegui moved in house at Tenaris in November and December 2025, respectively.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- Response time and document quality: Diego Parise, Mercedes Rodriguez Giaverini, Mariela Melhem.
- They possess an exceptionally high level of business knowledge, understanding of its historical evolution, a keen awareness of priorities, professional contributions, and high-quality documentation.
- The firm's competitive advantage lies in its combination of technical excellence, strategic vision, and in-depth knowledge of our business, enabling them to provide top-quality advice with a practical, results-oriented approach. Their lawyers are distinguished by their sound judgment, foresight, availability, and commitment to client objectives. Unlike competitors, they act as true strategic partners, delivering effective solutions to complex matters while consistently maintaining the highest standards of service, professionalism, and trust.
- This team stands out for the quality of its advice, its deep understanding of our business, and its excellent responsiveness. They act as a true extension of our legal department and, compared to other firms, excel in their practical approach, efficiency, and innovative service delivery.
- Active listening and a willingness to quickly address the needs of meetings.
- The speed and assertiveness of their responses. That is, you present them with a case, and they quickly ask the clarifying questions they need and, without delay, considering the complexity of the issue, they deliver a quality answer.
- They are excellent.
- The added value lies in the personalized and prompt response, as well as the connections with international firms for specific consultations. Mariela Melhem possesses a global perspective that is invaluable to the business and never loses sight of the practicality required.
- The team at Estudio Mitrani keeps us constantly updated on new rules, practices, and developments in this area. They are quick to respond and approachable when asking questions. It's a diverse team, with many women working in the field.
- Dr. Mariela Melhem becomes deeply involved in the subject matter she advises on in order to give the best advice and meet the client's expectations in all professional dimensions.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Maria Paula Díaz
Practice head
Mariela Inés Melhem; Cristian Mitrani
Other key lawyers
Agustina De Nicola; Paula Saccone Spagnuolo; Denis Márquez; Florencia Lacordelle