Just apply online and people come to find you. You have the option to have your credentials and background checked. Although it may seem scary the first time you interact with a potential employer, every single conversation and follow through I had was legitimate. Sittercity is very strict about scammers.

This is an agency that connects babysitters with families. Took place in a small office with two other employees present, but behind a screen and working at their desks. I really hate when interviewers ask "What's your biggest weakness at X?" which they did. The person who interviewed me was perfectly friendly, but seemed weary of interviewing people, as they are always taking applicants.