He served as the Deputy Inspector-General of Police (DIG) from December 2021 to his promotion to the IGP in June 2023.
He holds a Master's Degree in Social Science in Policing Studies from Universiti Kebangsaan Malaysia (UKM).
He had served as Deputy Commander of Special Task Force On Organised Crime (STAFOC) in 2013.
On 29 April 2016, Razarudin promoted to Senior Assistant Commissioner of Police and assumed the post of Head of the Penang Criminal Investigation Department, replacing Zakaria Ahmad who went on become Johor Deputy Police Chief.
On 9 September 2020, he served as Director of Bukit Aman Narcotics Crime Investigation Department.