Can you show some sample out from
Get-VM-Name vm-*|Group-Object-Property {$_.CustomFields['deployment']}|where{$_.Name-like'service-instance_*'}
and
Get-VM-Name vm-*|Group-Object-Property {$_.CustomFields['deployment']}|where{$_.Name-like'service-instance_*'}|
ForEach-Object-Process {
Group-Object-InputObject $_.Group-Property {$_.CustomFields['job']}
}