Most of the time, senior caregivers are over the age of 21. Depending on the agency you go with, the requirements they set for their candidates may differ slightly. You are able to set your own criteria for a caregiver and find someone who matches that. Some examples of qualifications include being CNA certified, first-aid certified, passing a company's senior care course, a nursing degree, experience working in a healthcare facility, and others. There is no such thing as a senior care license, so you'll find that the backgrounds and qualifications of candidates vary from person to person.