Delfino participated in ICIJ’s Paradise Papers investigation, the aftermath of Panama Papers, Implant Files, the Bribery Division, Fincen Files, Uber Files and Pandora Papers. She specializes in investigative journalism focused on corruption in government and corporations. She also covers federal courts in Buenos Aires and environmental issues.
In addition to her work as a member of the Argentine team on Paradise Papers, she was also part of the team "Investiga Lava Jato", formed by more than 20 journalists from eleven countries to pursue the corruption investigation that began in Brazil as a probe into money laundering and expanded to widespread bribery and corruption.
Delfino was awarded the Konex Prize, recognizing the "100 most outstanding personalities of the decade 2007-2017 of Communication-Journalism of Argentina".
She also teaches investigative journalism at two universities in Buenos Aires, Universidad Católica Argentina and Universidad del Salvador.