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Tetiana Yastremska - Doctor of Philological Sciences, Deputy Director for Scientific Work at the Tchaikovsky Institute of Ukrainian Studies. I. Krypyakevych Ukrainian Studies institute of the National Academy of Sciences of Ukraine.

In 1997, she graduated from the Philology Department of Lviv's Ivan Franko National University. Since then, she has worked at the I. Krypyakevych Institute of Ukrainian Studies of the National Academy of Sciences of Ukraine as a PhD student (1997-2001), junior researcher (2001-2003), research and teaching associate (2003-2009), senior research and teaching associate in the Department of Ukrainian Language (2009-2018), and deputy director for scientific work (since 2018).

In 2002, she defended her doctoral thesis at the Institute of the Ukrainian Language of the National Academy of Sciences of Ukraine, titled Structural-Semantic Organization and Geographical Variation of the Vocabulary of the shepherd's Hutsul dialect, and in 2021 she defended her habilitation dissertation entitled Lexical-semantic modelling of Ukrainian dialectal space (scientific consultant - Professor, Doctor of Philological Sciences Pavlo Hrycenko).

Co-author and editor-in-chief of the series of collective monographs Studia dialektologiczne (Lviv - Warsaw), chair of the editorial board of the publishing series Skrzynia dialektologiczna (Lviv).

Since 2000 - member of the organising committee of the International Scientific Seminar Current Problems of Dialectology, in 2019 she chaired the organising committee of the conference.

Researcher on issues of dialect lexicography and textology, semantics and vocabulary.Author of monographs Traditional Hutsul shepherding (Lviv, 2008), Modelling Ukrainian dialectal space: the concepts of UP/DOWN (Lviv, 2021) and more than 110 scientific publications, co-author of lexicographical works: Lviv lexicon: seriously and jokingly (ed. 4, Lviv, 2009-2019), Hutsul Worlds. Lexicon (Lviv, 2015), Words from Bolechov (Lviv, 2017). Participant in dialectological expeditions to Hutsul, Transnistria, Bojkovshchyna.