Rosemary holds two master’s degrees from the University of Durham, UK. She completed her undergraduate master’s degree of Physics in 2013 which focused on physics, mathematics, computer programming and astronomy. In 2015, she received her master's degree in Astronomy, where she conducted research on gamma-ray emission from black holes.   In 2019, Rosemary graduated with a doctorate in astronomy from the University of Sussex, UK. Between 2013 and 2018, Rosemary spent more than one year working as a simulation support engineer and research data scientist in the UK, where she worked on software code development projects and developed machine learning techniques for anomaly detection from robotic sensors.   In 2019, Rosemary started a postdoctoral research fellowship in astrophysics at the Max Planck Institute for Extra-terrestrial physics in Munich, Germany, to study the evolution of galaxies with astronomical data from space- and ground-based telescopes. After completing this postdoctoral work in 2022, Rosemary joined French space agency CNES in Paris, France, as a research fellow in space science, where she worked on upcoming ESA/CNES missions such as EUCLID or the analysis of James Webb Space Telescope observations.