Custodian (noun)

1. A person who has the care and superintendence of something, especially a building or property.
2. A person who is responsible for the maintenance and security of a building or property.

Origin:

Late middle english: from latin custodian- "guardian", from the verb custodire, from custos "guard".

Examples:

1. The custodian was responsible for keeping the building clean and safe.
2. The school custodian was responsible for the upkeep of the school grounds.
3. As the custodian of the property, he was responsible for its security and maintenance.
4. The custodian job includes cleaning, maintenance and security of the building.
5. The custodian is responsible for making sure that the building is safe and secure at all times.