Availability is your headline number. Say what you were on call for, how big it was, and what you did when it broke.
Three things, in order of weight.
Availability and the scale behind it — nines are meaningless alone
A real incident: detection time, recovery time, follow-up fix
Cost reduction on infrastructure, which is increasingly the hiring reason
Work them into your title, project descriptions and skills — don't pile them into a list.
Each cover is the template itself, rendered.
Strong headings organise ops, platform and incident work.
Reliable single column for enterprise ATS.
Dense and undecorated.
One page. Unless you have 10+ years and a genuinely full second page, the second page only dilutes the first. Put availability and the scale behind it — nines are meaningless alone above the fold.
Listing tools (K8s, Prometheus, Terraform) with no environment size. It is the single most common reason this role gets screened out, and fixing it matters far more than changing templates.
Use AI for the first draft, then verify every claim and number yourself and reorder keywords against the target job description. AI handles speed; the content is still your responsibility.