Night nannies
Most work 8–12 hour overnight shifts in the first weeks. They handle feeds (or bring the baby to you), changes and settling, wash bottles and keep a log. Many also work gently on longer sleep stretches once the baby is ready.
Training is non-medical. Look for a recognized newborn care specialist certification, current infant CPR and references from recent families.
Night nurses
A night nurse holds an RN or LPN license. Choose one if your baby came home from the NICU, was born early, or needs medication, oxygen or feeding-tube care. Rates are higher, and some agencies use "night nurse" loosely, so ask to see the license.
Postpartum doulas
A postpartum doula's focus is the birthing parent: physical recovery, feeding support, light meal prep, and someone to talk to. Most visit for a few hours during the day; some also offer overnights.