Arinze obtained an LL.B(Hons) in 2016 from the University of Lagos and was called to the Nigeria bar in 2017. He started his career in the law firm of Lere Oyedepo & Co. in 2017 before joining Calmhill Partners as an Associate.

Arinze is a member of Corporate/Commercial department of the firm where he brings to bear his eye for detail, and also strong analytical and research skills. He has advised severally on the regulatory framework for doing business in Nigeria and also on company restructuring.

He is a member of the Nigeria Bar Association