Soledad Murillo holds a PhD in Sociology from the Complutense University of Madrid. Until her appointment as Secretary of State for Equality, she was a professor in the Social Sciences Faculty at the University of Salamanca.

In 1998 she promoted the seminar on women’s studies and pioneered the first PhD in Gender at the University of Salamanca.

From 2004 to 2008 she was Secretary General for Equality Policies in the Ministry of Labour and Social Affairs. She was the driving force behind the Organic Law 1/2004 on Comprehensive Protection Measures against Gender-based Violence and the Organic Law 3/2007 on the Effective Equality between Women and Men.

Between 2009 and 2013 she was a member of the United Nations Committee against Discrimination Against Women (CEDAW), based in Geneva and New York.

Speaker in different national and international forums related to Gender, Equality, Co-responsibility/Conciliation, Personal, Labour and Social Empowerment of Women, etc. She has collaborated with women's organizations and associations, and she is an appreciated expert by the feminist movement. She has participated in several researches and publications on women, mainly related to social promotion of women in areas such as health, employment and economic participation.

Among her most well-known publications are: “El mito de la Vida Privada: de la Entrega al tiempo propio”, “La invisibilización del cuidado en la familia en los sistemas sanitarios. Política y Sociedad”. Monographs: “La enfermedad y sociedad en los comienzos del siglo XXI”, “Relaciones de Poder entre Hombres y Mujeres”, “Construcción de Roles en la Violencia doméstica”, “Nuevos riesgos y nuevas formas de pensar el empleo femenino. In: Feminismo: del pasado al presente”, “The danger of Equating Privatic and Domestic”. “La postmodernidad ¿O la crisis del sujeto masculino? In: Hombres y Mujeres en el pensamiento sociológico”.