Alexandria Williams got her Master of Science in Public Health Microbiology and Emerging Infectious Disease from The George Washington University in Washington, DC. As part of her program, she worked as a trainee for The World Health Organization and also spent time in Lima, Peru where she gave a guest lecture on HIV PREP for the US Naval Medical Research Unit 6. She has multinational experience working and living in Ecuador, Peru, Switzerland, and the USA.

Since her graduation in 2015, she has lived in Belgium and worked in various roles surrounding public health. In 2016, she worked at UCB BioPharma, and then as a research associate at the Centre for Research on the Epidemiology of Disasters (CRED). Before her move to P95, Alexandria was research coordinator for the Institut de Recherche Santé et Société (IRSS) at UCLouvain. She joined P95 as an Epidemiologist in April 2020.