These things all look the same and your message is just going to get marked spam.
For example, it's painfully obvious that our staff eng role's "combination of distributed execution, workload optimization, and cost-aware infrastructure" is not, in fact, "unusually close" to whatever line on your resume Claude decided is tangentially relevant.
Just write a normal email by hand and send it. If you it looks like you spent 5 minutes looking up what we do and are actually excited I'll at least look at your resume; if you spent 0 minutes thinking about the job posting I'm going to spend 0 minutes on this too.