The daughter of Mexican immigrants, Joscelyn was born and raised in the outskirts of Chicago. She attended Tufts University, where she earned a B.A. in international relations and minors in Latin American studies and Chinese. Upon graduating in 2016, Joscelyn headed to Taitung, Taiwan, where she was a Fulbright English Teaching Assistant at an elementary school. Afterward, she spent a year as a Princeton in Latin America Fellow in Villa El Salvador, Lima, Peru. There, she served as the Program Director at the nonprofit Building Dignity, a local community center that provides free educational programs. To spend more time with family, Joscelyn came back to her hometown and later moved to Chicago where she worked at World Relief, a nonprofit serving immigrants, refugees, and asylum seekers. She is now pursuing a Master in Public Affairs at the Princeton School of Public and International Affairs (SPIA) where she is studying international development with a focus on migration and gender. While at SPIA, Joscelyn founded SPIA Latinx and was a board member of FIRST+, a SPIA student group for low-income and first-generation students.