Ritesh Kumar is an Assistant Professor of Computational Linguistics at the Department of Linguistics, Dr. Bhimrao Ambedkar University, Agra. He is also a Fellow and Lead of the Division on Artificial Intelligence and Linguistics at the Council for Strategic and Defence Research, New Delhi. His research interests lie broadly at the intersection of pragmatics, sociolinguistics and computational linguistics. For the past several years, he has been working on the theoretical and computational modelling of politeness, impoliteness and aggression in language. His research in this field has been supported and funded by organisations like UKIERI, Microsoft Research and Facebook Research and has led to the development of tools and corpora for the automatic detection of aggression and offensive content in languages like Hindi, Bangla and Meitei. At the same time, he is deeply involved with the issues of language endangerment, documentation, revitalization and technology and resource development for minoritised and endangered languages in India. He has been working on the development of language resources and technologies (such as ASR systems, POS taggers, language models, etc) for various minoritised and endangered languages (such as Awadhi, Beda, Braj Bhasha, Magahi, Toto, Chokri, among others) and also worked towards the development of software tools and infrastructure (such as LiFE App, mScrabble, etc) for supporting this kind of research. Recently he, along with his students has also started a startup, UnReaL-TecE LLP, to undertake the development of consumer products for these languages. His research in this field has been generously funded by the Central Institute of Indian Languages, Karya Inc., Panlingua and the Ministry of Electronics and Information Technology, Government of India.