Job nesting is somewhat square in 3.4. Your options are to call your job using the Loop transforms, which is not flexible, or to deploy your job and call it using %include (which would not be traceable in your metadata).
In 9.2/4.2 again, this will be better supported.
/Linus
Data never sleeps
April 27 – 30 | Gaylord Texan | Grapevine, Texas
Registration is open
Walk in ready to learn. Walk out ready to deliver. This is the data and AI conference you can't afford to miss. Register now and lock in 2025 pricing—just $495!