In 2020, he became a Max Weber Fellow at theRobert Schuman Centre for Advanced Studies,European University Institute (EUI) inFlorence, pursuing a project on the ideological history of Europeanism in the 20th century, and the neglectedEuropeanist ideas ofinterwarprogressive thinkers such as Max Cohen-Reuß andAlexandre Marc.[14][15][16] He joined the Young Academics Network of the Foundation for European Progressive Studies, embarking on a multi-year project investigating the prospects for a EuropeanUniversal basic income,[17][18][19] which culminated in the bookA Radical Bargain for Europe (2024).[20] During his time at the EUI, Ostrowski brought out his second monographIdeology (2022), in which he develops the first statement of his distinctive approach to ideology theory, building on the morphological approach pioneered byMichael Freeden.[21]
Alongside his academic work, Ostrowski has been an active contributor topolicy debates at the UK, European, and global level. In 2012–13, he acted as Head of Research for theAll-Party Parliamentary Group on Taxation in theUK Parliament, evaluating the opportunities forfiscal divergence in anindependent Scotland.[22] Ostrowski took up an offer to join thethinktankResPublica in 2022 to develop a new strand of research onlifelong learning, integrated tertiary education, and thepolitical economy of skills.[23] In 2023, he oversaw the conversion of this work into a new education policy thinktank, the Lifelong Education Institute (LEI),[24] and was appointed its founding director, withAnn Limb as the LEI's inaugural Chair. At the same time, Ostrowski joined the editorial team of theJournal of Political Ideologies, succeedingMichael Freeden and Mathew Humphrey as Editor-in-Chief, and taking up a position as Honorary Assistant Professor at the Centre for Research into Ideas and the Study of Political Ideologies,University of Nottingham.[25] In 2024, Ostrowski left his role at the Lifelong Education Institute and returned to Oxford as anESRC Policy Fellow and Researcher at theBlavatnik School of Government.[26]
In 2021, Ostrowski was elected a Fellow of theRoyal Historical Society and a Fellow of theRoyal Society of Arts, United Kingdom.[28] In 2023, he was appointed as one of the inaugural members of the Chamber of Legal Studies of the Nicolaus Copernicus Academy,Poland.[29]
(with Dominic Afscharian, Viktoriia Muliavka, and Lukáš Siegel)A Radical Bargain for Europe: Progressive Visions of a European Basic Income (Rowman & Littlefield, 2024)[20]
Achieving Autonomy: What the independence referendum means for Scotland’s fiscal future (All-Party Parliamentary Group on Taxation, UK Parliament, 2013)[22]
(with Dominic Afscharian, Viktoriia Muliavka, and Lukáš Siegel)The European Basic Income: Delivering on Social Europe (Foundation for European Progressive Studies, 2021)[19]
(with Dominic Afscharian)Building Resilient Democracies: Challenges and Solutions across the Globe (Foundation for European Progressive Studies, 2022)[38]
Behavioural standards and learning outcomes in the English comprehensive school system (ResPublica, 2023)[39]
Behaving to learn: Best practice lessons for the behavioural turn in English schools policy (ResPublica, 2023)[40]
Hungry to learn: Lifelong Learning Pathways for the agri-food sector (Lifelong Education Institute, 2023)[41]
Making skills work: The path to solving the productivity crisis (City & Guilds and Lifelong Education Institute, 2024)[42]
^abOstrowski, Marius S. (2020).Left unity: manifesto for a progressive alliance. Lanham: Policy Network / Rowman & Littlefield International.ISBN978-1-78661-295-3.
^Ostrowski, Marius (2021-02-16)."Left Unity".Progressive Britain. Retrieved2024-10-05.
^abAfscharian, Dominic; Muliavka, Viktoriia; Ostrowski, Marius S.; Siegel, Lukáš (2024).A radical bargain for Europe: progressive visions of a European basic income. Lanham Boulder New York London: Rowman & Littlefield.ISBN978-1-5381-6792-2.
