Any pitfalls with using multiple developer accounts?

I have my own Apple account and apps, but I'm also a Unity-based freelancer and am about to build an app (iOS and Mac App Stores) using a client's developer account.

Is there anything I need to be careful of so the two accounts don't interfere with one another in Xcode?

Or, if I have the proper certificates in my Keychain, and choose the correct Team for each app, is that all there is to it?

Thanks in advance!

(Moderators: I had to post here because the other subforums I've tried report "invalid characters." Ideally this should be moved to "Xcode/Capabilities, Certificates..." if possible.)