Holding a DBS certificate is not a requirement for being a sitter on the bubble app, but it does help your profile stand out and may increase your chances of getting booking requests.
When signing up and editing your profile, you have the opportunity to state whether you hold a valid DBS certificate.
In some cases, parents may request you bring your certificate when sitting for them, and if you've stated on your profile that you do hold this certificate, then you should be prepared to present it to a parent if asked.
New to bubble and want to start babysitting? You can download the app for FREE here.