Have you looked at any of these self-hostable Project Management options from the awesome-selfhosted lists?

curios to see how well a PDF resume from this fares thru the various ATS's that are out there

I pay migadu to host my custom email domain. Well worth it. I tried self-hosting email, and it was too much of a pain for me.

You may want to consider CrowdSec instead of fail2ban. It's more efficient and they have a shared list of known bad IPs that you can use.

interesting, I'll have to check out Crowdsec