For five years Francis was a Postdoctoral Research Associate with Larry Frakes at the University of Adelaide.[1] In 1991 she accepted a position as a lecturer in the Department of Earth Sciences at the University of Leeds UK; she was promoted to Senior Lecturer in 1996. In 2002, she was awarded the Polar Medal, becoming only the fourth woman in history to receive the award.[11]
She was promoted to Professor of Palaeoclimatology in the School of Earth and Environment and was the Director for the Centre for Polar Science at the University of Leeds,[8] before becoming Dean of the Faculty of Environment in 2008.[1] She is an Honorary Professor at the University of Leeds. On 1 October 2013 Francis took up her post as Director of the British Antarctic Survey, becoming the first woman Director of the institution.[12]
Francis's principal interests are in palaeoclimatology and palaeobotany. She specialises in the study of fossil plants, and their use as tools for climate interpretation and information about past biodiversity:[13][14] for example, understanding past climate change during greenhouse and icehouse periods.[15] Her research has emphasised the "Antarctic paradox," that although the Antarctic is largely inhospitable now, its abundant plant fossils indicate a drastically warmer past climate.[16] She has undertaken more than 16 expeditions to the Arctic and Antarctic.[17]
Francis was described by the Geological Society of London during the awarding of her Coke Medal as playing a "pivotal role in shaping and directing the Earth science carried out in polar regions, through her extensive service on a staggeringly wide range of national and international policy committees."[13] She is also the first woman to chair the Operations Working Group of Antarctic Treaty Consultative Meetings, the international forum of nations concerned with legal and operational issues in Antarctica.[18]
Francis's contributions have been recognised with numerous awards. Most notably, she was awarded the Polar Medal in 2002 for outstanding contribution to British polar research, presented by H.M. Elizabeth II, and was the fourth woman ever to receive the award.[20]
^Woolfe, K. J.; Stewart, L. K.; Francis, J. E.; Arnot, M. J. (2000). "PC99: A new freeware for manipulating and graphically displaying palaeocurrent data". Sedimentary Geology. 133 (1–2): 1. Bibcode:2000SedG..133....1W. doi:10.1016/S0037-0738(00)00034-8.