The Regional Sponsored Migration Scheme (RSMS) subclass 187 allows employers in Tasmania to employ skilled migrants if a position cannot be filled by an Australia citizen or permanent resident.
If you cannot wait until the babies have fledged you may contact a licensed wildlife cooperator to help you find a solution. Chimney swifts are protected by the Migratory Bird Treaty Act and a federal permit is needed to remove birds and their nests during the nesting season.
There's still an awful lot that we don't know about them, making them a real Mystery Bird. See this article for more information: A Swift lies dead in a street in Spain. Swifts are at risk when they try to reach their old nest places while building works are in progress, the cause of this bird's death.