Dr. Saydi Cecilia Núñez Cetina holds a Bachelor's degree in History from the Universidad Nacional de Colombia (Bogotá), a Master's degree in Gender Studies from El Colegio de México (COLMEX), and a Ph.D. in Social Anthropology from CIESAS (Mexico City), followed by a postdoctoral fellowship in History and Ethnohistory at ENAH. She serves as a Full-Time Senior Professor (Titular C) in the undergraduate and graduate programs in History at the Universidad Autónoma Metropolitana Unidad Iztapalapa, where she is the founder and director of the Permanent Research Seminar on "History of Gender, Sexualities, and Intersectionality." She holds Level I status in Mexico's National System of Researchers (SNII).

She specializes in 20th-century Mexican social and cultural history, gender, violence, and justice. Her research examines female criminality during the Porfiriato, criminal proceedings for homicide, infanticide, and abortion in post-revolutionary Mexico, and violence against women through the construction of romantic love from crimes of passion to femicide. Additionally, she has analyzed 1960s print media and cultural industries regarding gender stereotypes, family dynamics, and sexuality, alongside conducting critical assessments of contemporary Mexican historiography within 21st-century frameworks.

Her administrative and institutional service includes serving as President of the Humanities Review Commission (Commission 3) for the SNII, evaluating for the INAH Awards, serving on the Editorial Board of Biblioteca Signos, and coordinating the Undergraduate History Program at UAM Iztapalapa. Furthermore, she served on the Transdisciplinary Commission supporting the Gender Violence Prevention Unit at UAM Xochimilco. Her co-edited book publications include Pensar el siglo XX en el XXI (UAM, 2025), Las violencias en el México contemporáneo (UAM, 2022), and Melodramas de papel (IIH-UNAM, 2021).