Jiřina holds a PhD (CSc.) in Sociology from the Czechoslovak Academy of Sciences in Prague, and is a Doctor of Philosophy (Linguistics and Psychology) of Charles University. She was appointed Reader in Media and Communication at the University of Lincoln in 2007.
Prior to returning to Prague in 2014, Jiřina had been teaching in the UK (Universities of Durham and Lincoln) for 16 years and was a visiting scholar at academic institutions in the USA (American Council of Learned Societies Postdoctoral Fellow at the University of California at Santa Cruz; Northwestern University, Il.) and Europe (Webb Memorial Trust Scholar, Oxford University; Collegium Budapest; Internationales Forschungszentrum Kulturwissenschaften, Vienna). She is an Honorary Fellow of the University of Lincoln.
She has also been engaged in research and teaching domestically (Charles University, Prague; University of Hradec Králové; Palacký University, Olomouc; Academy of Sciences, Prague), and is currently supervising PhD students at Charles University and the University of Hradec Králové.
As a research-active scholar she has been focusing on cultural and gender studies with specific attention to the region of East and Central Europe during the Cold War and its aftermath.
She has been involved in administering academic institutions (Ustinov Institute for the Study of East and Central Europe, University of Durham), and was a co-director of the Centre for European Cultural Studies, University of Lincoln. She served as an Erasmus co-coordinator for the Department of Russian and Slavonic Languages, University of Durham; Lincoln School of Media, University of Lincoln; and the Institute of Communication Studies and Journalism, Faculty of Social Sciences, Charles University.