Este promotoarea dreptului international al investitiilor in Romania si cercetator stiintific in cadrul Institutului de Cercetari Juridice « Acad. Andrei Radulescu » al Academiei Romane. Desfasoara o intensa activitate de cercetare stiintifica, precum si activitate publicistica si de editare, fiind editor-sef al unor publicatii de specialitate, printre care International Investment Law Journal. Este co-editor al unor volume in co-autorat cu personalitati stiintifice internationale precum profesor Thierry Bonneau (Pantheon Assas II, Sorbona, Franta) sau profesor Dalvinder Singh (University of Warwick, UK). Arbitru si mediator la Vienna International Arbitral Centre si membra in Board of Directors in AEDBF Europa. Este doctor in drept international. Teza de doctorat Dreptul International al Investitiilor. Coordonate/ International Investment Law. Coordinates, se gaseste publicata de Epublishers Publishing House, 2019. Postdoc. Mediation and Negotiation CDRC Vienna. Lista selectiva a activitatilor publicistice: Monografii: Cristina Elena Popa Tache, Introduction to International Investment Law, Ed. Adjuris International Academic Publisher, 2020, editia tradusa a monografiei Introducere in dreptul international al investitiilor, Ed. Universul Juridic, 2018. Cristina Elena Popa Tache, Dreptul International al Investitiilor. Coordonate/ International Investment Law. Coordinates, Epublishers Publishing House, 2019. Cristina Elena Popa Tache, Legal treatment standards for international investments. Heuristic aspects, Ed. Adjuris International Academic Publisher, 2021. Cristina Elena Popa Tache, Vers un droit de l'ame et des bioénergies du vivant, Ed. L Harmattan, Collection : Logiques Juridiques, 2022, prefata de Jean-Luc Martin-Lagardette.