Director of State Operations Jamie Rubin will leave his post in December, sources late Monday afternoon told NY1’s Zack Fink.

Rubin was appointed to the job in January after serving in several roles in Gov. Andrew Cuomo’s administration, including as commissioner of Homes and Community Renew and as one of the top official in charge of recovery after Hurricane Sandy.

The job, which oversees day-to-day functions of New York, is a key one for any gubernatorial administration.

Rubin’s departure comes as Cuomo’s chief of staff, Maria Comella, is leaving in January. She will be replaced in the post by Linda Lacewell, a longtime advisor to the governor.