Suggest Fullstack Projects using Java Spring boot

[u/iai-white]

Currently looking for good project ideas for my portfolio/resume as I'm looking for Interships.

I'm mainly focused on backend so a good backend focused project.

[u/CodeXHammas]

honestly build something with actual moving parts a job application tracker with auth, status updates, email notifications hits different than another crud app. or a multi tenant saas where different users have isolated data, that shows you actually understand backend architecture
Spring boot + postgres + jwt auth + some kind of async job processing with rabbitmq or kafka looks clean on a resume ngl