Vasile Glavan has been employed as a professor in the Department of Mathematics at the University of Natural Sciences and Humanities in Siedlce, Poland, since May 1, 1999. In his role as a professor, he is likely involved in teaching mathematics courses, conducting research, and mentoring students. His long tenure indicates a significant contribution to the academic and research activities within the department, helping to advance the field of mathematics and support the educational development of students over many years.