AWS DevOps / Architect / Sysadmin to provide on-call coverage for 4 weeks

Our AWS architect is going on an extended vacation for 4 weeks and we need someone to provide coverage from June 14 to July 8. This is strictly maintenance in the event of a problem: we are not planning any architecture updates or major deployments during this time. We will pay a minimum of $500 regardless of how many hours you ultimately bill.  We will provide checklists for all the issues we can reasonably anticipate. We need someone who is able to respond within 30 to 60 minutes during customary North American business hours. Core competencies: - AWS Solutions Architect certification or 3 years experience doing DevOps or Sysadmin in AWS. - Terraform/OpenTofu familiarity