Erhan earned his PhD in Mathematics from Ankara University, Türkiye, under the supervision of Prof. H. Hilmi Hacısalihoğlu and Prof. Yusuf Yaylı (2007-2010). He served as a mathematics teacher in state high schools under the Ministry of National Education of the Republic of Türkiye (1998-2013). Additionally, he was involved in the book review section and the development of the high school geometry curriculum at the board of education (2007-2010). Erhan also spent nine months as a postdoctoral researcher at Katholieke Leuven University, Belgium, where he gave a seminar (2011-2012). He began his academic career as an assistant professor at Bartın University, Türkiye (2013-2019). In 2014, he was invited to conduct research at the University of Granada, Spain, and later that year, he worked as a postdoctoral researcher at Kobe University, Japan, for two months. During this time, he also gave a seminar at Kyushu University. He has worked as an associate professor at Bartın University (2019-...). He is currently at Texas Tech University, USA, for research and teaching during the 2024-2025 academic year. His research interests lie in differential geometry, with a focus on curvatures, helicoidal, rotational, minimal, maximal, and non-orientable hypersurfaces in space forms.