Nader Sepehr has been lecturing widely in Persian, Farsi - - Dari, Afghan - - Persian, Tajik, (French and English beginners) languages, culture for over twenty-five years; that is, beginners, intermediate, post-graduate and PhD levels (five years). He also works in the capacity of a Linguist, Senior professional Multilingual Conference Interpreter (Persian, Dari, English and Tajik), Proof-reader, Translator of the above mentioned languages and translates (short articles, texts) from Spanish and Arabic languages into English language. Nader’s teaching has also included working as a Senior Teacher, Examiner, Course Setter/Vetter at UK Ministries and has taught Persian language and Culture at the University of Oxford (Part-Time, 2015 -2019).Nader welcomes PhD students for supervision on Persian language, Culture, Poetry, Linguistics and contemporary Socio-Political developments in Iran.

In October 2019, Nader was awarded a Fellowship by the Chartered Institute of Linguists.