In 2013, having earned his habilitation in humanities within the discipline of literary studies on the basis of a thematic cycle of publications dedicated to the oeuvre and thought of Herman Melville, he received tenure and was appointed associate professor of the University of Silesia in Katowice.

Departing from the assumption of the aporetic (ontic/discursive) character of reality, Jędrzejko fosters research penetrating the common grounds of human cognitive experience and creative activity and focusing upon the complex interdependencies between individual awareness of the worldmaking power of language and the shape of daily interpersonal and intercultural relations.

Having authored numerous scholarly articles and popular texts, book reviews and critical notes, Jędrzejko has also facilitated the development of international scholarship as the co-editor of a number of collective volumes and journal issues.

In the years 2000–2002, he served as a Civic Education Project Local Faculty Fellow, responsible for building bridges between the western democracies and the countries of Central and Eastern Europe by means of academic curriculum development and organization of international research cooperation among students.

[20] Between 2013 and 2020, Paweł Jędrzejko held the chair of the Department of American and Canadian Studies of the Institute of English Cultures and Literatures at the Faculty of Philology of the University of Silesia in Katowice.

As the director of the publishing house whose history dates back to 1968, he was responsible for the reinforcing of the brand's position in the academic book market by means of the implementation of mechanisms facilitating electronic workflow and document flow, the development and implementation of electronic platforms for the purpose of the distribution and indexation of publications of the University of Silesia faculty.

[23] In the same years, he served as the representative of the president of the Conference of the Rectors of Academic Schools of Poland (CRASP) in an international contact group at the European University Association.

[24] As a consequence of his commitment to the fostering of the transfer of knowledge between industry, socioeconomic environment, business and academia, Jędrzejko was able to use his experience to initiate two innovative academic programs: "SPRINT – Studies on the Production of Interactive Entertainment"[25] (coordinated today by Marcin Sarnek, Małgorzata Łuszczak and Urszula Boryczka)[26] and "American and Canadian Studies for Intercultural Relations and Diplomacy"[27] In 2016, in recognition of his overall contribution to the development of scholarship and in appreciation of his achievements in the field of the organization of academic life, he was awarded the Gold Badge of Merit of the University of Silesia in Katowice (Zasłużony dla Uniwersytetu Śląskiego).

Since 1998, Paweł Jędrzejko has been a member of the Polish a cappella sextet Banana Boat performing as the band's baritone and baritenor and as its lyricist.

In the latter capacity, he has authored a number of award-winning songs recorded on original albums: A morze tak, a może nie..., Banana Boat... Świątecznie, A Little A Cappella: A Polish-Irish Harmony (with Eleanor McEvoy) and Aquareal.