A deputy commissioner is a person who helps and supports the main commissioner in their work or responsibilities. They assist in managing and overseeing certain tasks and projects. Full definition
She was first elected commissioner in 1996 and served as deputy commissioner for eight years prior to that. (syracuse.com)
I made one call to the first deputy commissioners office at the police department and that afternoon the entire hate crimes task force took over P.S. 18. (gayparentmag.com)
Currently, he said deputy commissioners are sometimes paid more than the agency heads because of the restrictions. (spectrumlocalnews.com)