You say that "nothing on my resume shows "security"" and that is fine... look, the job posting doesn't say it either. Certifications don't count for anything. Most of us here don't show up with "security" or certifications on a resume.
That said, the skill you list as "sysadmin/SRE/shitty dev" (for "SRE" being either "software release engineer" or "site reliability engineering") probably isn't going to cut it. Something more low-level is usually needed. You almost need to be good at assembly language.
https://news.ycombinator.com/item?id=18358038
You say that "nothing on my resume shows "security"" and that is fine... look, the job posting doesn't say it either. Certifications don't count for anything. Most of us here don't show up with "security" or certifications on a resume.
That said, the skill you list as "sysadmin/SRE/shitty dev" (for "SRE" being either "software release engineer" or "site reliability engineering") probably isn't going to cut it. Something more low-level is usually needed. You almost need to be good at assembly language.