Cas Holloway, New York City’s deputy mayor of operations, will join Bloomberg LP with the end of Mayor Mike Bloomberg’s term in office.

hollowayHe will become deputy COO in late January.

Bill de Blasio, who will be sworn in as NYC’s chief on Jan. 1, has named Anthony Shorris as his No. 2 in charge of daily operations of the 8.3M population metropolis.

Holloway, 40, said Bloomberg told him to talk to CEO Dan Doctoroff about a job at the media/financial terminal combine.

Doctoroff also was a former deputy mayor under Bloomberg who left the city’s payroll in 2008.

He said in a statement that Hollloway  has “unique ability to drive creative solutions to the most complex issues.”