Not at the moment. We are aware that collaboration is important for designers, and we’re working on it (see our Public Roadmap).
In the meantime, the workaround to collaborate on Jitter is to share credentials of a Pro plan. You can setup a password from the “Account” page, and share it using a password manager solution.
Important note: Multiplayer editing is not yet supported on Jitter. We recommend not to have the same file opened on two computers, or you may experience synchronisation issues.