Nicolás specializes in national and international arbitration, as well as national litigation in ordinary, administrative, and constitutional jurisdictions. He also has experience in alternative dispute resolution methods such as conciliation, mediation, and friendly consultation.

He is assistant professor of public international law and international economic law at Universidad de Los Andes and has authored publications on national arbitration, international commercial arbitration, and investment arbitration.

Before joining Rincón Castro Abogados, he worked for over three years at the Constitutional Court of Colombia.