Ariane Macalinga Borlongan’s education and experience across the world have inspired him to passionately work with English speakers in non-Anglo-American contexts and multilingual migrants in contemporary global societies. As a sociolinguist, he has analyzed variation, change, and standardization across Englishes and has investigated on the linguistic dimensions of human mobility, eventually conceptualizing a framework for doing migration linguistics and proposing a linguistic theory of migration. He was previously with De La Salle University and The University of Tokyo (Japan) and also held various visiting teaching and research posts at the Nanyang Technological University (Singapore), SEAMEO Regional Language Centre (Singapore), University of Bialystok (Poland), the University of Freiburg (Germany), Universiti Malaya (Kuala Lumpur, Malaysia), and Wenzao Ursuline University of Languages (Kaohsiung, Taiwan). He edited Philippine English: Development, Structure, and Sociology of English in the Philippines, published by Routledge in 2023, which serves as the handbook of Philippine English and a festschrift in honor of Professor Bautista. He is Convener of the Research Network (ReN) for Migration Linguistics in the International Association of Applied Linguistics (AILA). He is Section Editor for English and Migration for the Routledge Resources Online: English in the Real World. He is Consultant of the Oxford English Dictionary for Japanese English and migration-related words. He writes Language Speaks, a weekly column on various language issues relevant to the general public for The Manila Times. He is presently Associate Professor of Sociolinguistics and also Founder and Head of the Migration Linguistics Unit (MLU) at the Tokyo University of Foreign Studies (Japan).