Lartilleux began her career by being an associate producer of the telenovelas produced by her husband, Salvador Mejía. Among their productions are Esmeralda, Rosalinda, and La usurpadora. She debuted as an outright producer in 2004 with the telenovela Inocente de Ti, starring Camila Sodi, Valentino Lanus, and Helena Rojo. Later, in 2005, she produced Peregrina, which turned out to be an unexpected success, starring África Zavala and Eduardo Capetillo. In 2008, her career took off when she produced the internationally successful Cuidado con el Ángel, starring Maite Perroni and William Levy.
- NotiMex. "Se agregarán 100 capítulos más a la telenovela 'Cuidado con el ángel'" [100 more episodes will be added to the telenovela 'Cuidado con el ángel']. Esmas.com. Retrieved 19 July 2014.
- "Nathalie Lartilleux". Esmas.com. Retrieved 19 July 2014.
- "'El vuelo de la Victoria' ya inició grabaciones". univision.com (in Spanish). Univision. Retrieved 2 June 2017.