companies-hiring-security-remote VS awesome-security-hardening

I recently came across this GitHub repo, which is a list of companies with remote security vacancies: https://github.com/jaegeral/companies-hiring-security-remote . However, I looked into most of these, and so far the only companies offering truly remote roles are GitLab and Platform.sh. I quite like GitLab's model as they are fully remote and seem to offer competitive salaries even though they do adjust compensation based on an employee's geographical location. Does anyone know of companies with a similar approach to recruitment (for security positions)?

If you want to go extreme, I remember from many years ago, there used to be a publicly released document by Australia's cyber security agency, made largely for Windows, which used to list attack vectors on a complex scale. I used to follow their listed possible vectors to formulate threat models as a kid for my Windows computer. Back in the day they used to provide PDF, now its webpages (https://www.cyber.gov.au/acsc/view-all-content/advice/guidelines-system-hardening). This also exists (https://github.com/decalage2/awesome-security-hardening), a bit more wide coverage of OSes and practices.

Maybe these two repos can help you, I've used them both from time to time to look up stuff I have no idea about as a frontend main: https://github.com/imthenachoman/How-To-Secure-A-Linux-Server https://github.com/decalage2/awesome-security-hardening

here is a collection of hardening guides This will get you started in the right direction.

This is called system hardening. Try looking for CIS Benchmarks, awesome hardening (github), STIG's ,mitre baseline, hardening kitty, hardening checklist