He worked at Polotsk State University from 1976 to 2023. Over these years, he taught a wide range of subjects, from electrical engineering to information technology disciplines.

He was repeatedly recognized as the university's best lecturer and won the "Krynica vedau-2014" university competition in the "Teacher of the Year" nomination.

His scientific interests were associated with intelligent data analysis methods, cloud technologies, the application of information technologies in the educational process, and the use of information technologies in humanities research.

He developed the concept for the university's distance learning system and selected the platform for its implementation. Under his leadership and with his direct participation, the system was successfully implemented and is operational. Instructional work with students of all specialties, in full-time, distance, and part-time forms of education, is conducted using the created system.

Thanks to the accumulated experience with the existing distance learning system, Polotsk State University successfully adapted to the transition to online learning during the COVID-19 outbreak from March to August 2020.

Through scientific internships and seminars in Poland and Germany, he researched the use of information technology in education and the application of cloud technologies for building a supportive information-educational environment. This experience was later applied to develop the distance learning system concept for Polotsk State University.

The research conducted by Arkady Oskin is reflected in his publications. On the eLibrary.ru portal, which maintains the Russian Science Citation Index, 101 of his scientific articles and 79 citations of them are registered.