A city schools custodial supervisor admitted he pulled strings to get his daughter a summer cleaning job, then boosted her salary and even got her holiday pay she didn’t deserve.

John Mullins said he got his kid hired in 2017 as a $15-an-hour “vacation replacement cleaner,” but changed her job title to “handyperson” to get her a raise to $27.52 an hour, according to a city Conflicts of Interest Board document released Tuesday.

He said his daughter wasn’t even working there any longer when he got her two days of holiday pay in September 2017, the document said.

Mullins, who began working for the Department of Education in 2006, also supervised a staff from the New York City School Support Services, a nonprofit that provides custodial services for city schools.

He took advantage of that dual role in July 2017, using his city schools email address to ask human resources officials at the non-profit for help in hiring his daughter.

“I stated that I knew of a school custodian who wanted to hire my daughter, asked whether my daughter had been placed in the eligible pool of workers so she could be hired, asked how to proceed, and for ‘help with this matter,’ ” Mullins wrote in a written settlement of his disciplinary case.

He served a 30-day suspension and was fired, the conflicts board said.

His daughter, whose name was not released, was overpaid by nearly $860 — most of it later recouped by the school district.

Mullins’ lawyer in the case did not return calls for comment Tuesday.