In 2009, Cristina earned an LL.M degree of the Master of Advanced Studies in International Dispute Settlement (MIDS), in Geneva, directed by Prof. Gabrielle Kaufmann/Kohler. She was selected for one of the three scholarships sponsored by the Ecoscientia Foundation. In partial fulfillment of the requirements for the LL.M degree she presented a thesis entitled "Withdrawal of States' Consent to ICSID Arbitration, Perspectives from the Bolivian and Ecuadorian Cases", which has been published by TDM.
After graduating she worked as an intern in the International Labor Organization. Consequently she obtained the position of External Collaborator. Her work concentrated in the recompilation of Latin American legislation on social security for the Employment and Labour ILO Ministers Report.
Over the course of the past three years, she has been part of the International Affairs and Arbitration Unit of the Attorney General's Office of Ecuador, representing the Republic in several international proceedings. As a trial attorney in charge of supervising international affairs, she is involved in several arbitrations filed by foreign companies as Chevron Corporation, Texaco Petroleum Company, Copper Mesa Mining, Occidental Petroleum Corporation, among others, against Ecuador. She has also been involved in annulment proceedings, dispute boards and the state-to-state proceeding initiated by the Republic of Ecuador against the United States of America for the Interpretation of the Bilateral Investment Treaty.
As an attorney, she has given support to the Arbitration Unit in the domestic arbitrations filed against governmental institutions and also in the negotiation of investment agreements with foreign investors.