On-call web developer (React / Node / AWS) for a live site, starting with a small paid check

We're a small Australian business with one live website: React front end on AWS Amplify, Node.js backend on AWS Elastic Beanstalk, MongoDB, code on GitHub, and a test site on a dev subdomain. Our previous developer has left. We need someone reliable to look after the backend and hosting: a few hours a month, more at times. First job (fixed price, paid trial): - Health check of our AWS setup (Amplify, Elastic Beanstalk, backups): a plain-English report of what's there, what's risky, what to fix, and hours for each fix - Confirm the Elastic Beanstalk platform version. It's likely still on Amazon Linux 2 (retired June 2026). Quote the upgrade separately - Replace the Google Maps API key used for address autocomplete on our form with a new key in our own Google Cloud account, restricted to our domain. Test on the test site first After that: small tasks as needed, hourly, with a weekly cap and a written quote before each task. Another developer looks after the front end; you would never both change the code at the same time. Must have: React, Node.js, AWS Amplify + Elastic Beanstalk, MongoDB, GitHub. Clear written English. Replies within 24 hours. Access is through a limited AWS user and a GitHub invite created for you, never our main login. To apply, answer these 3 questions: 1. How would you upgrade an Elastic Beanstalk environment from Amazon Linux 2 to Amazon Linux 2023 without the site going down? (3-4 sentences) 2. What's the first thing you'd check when taking over an AWS Amplify app connected to GitHub? 3. Your fixed price for the first job, and your hourly rate after that. Budget for the first job: US$30-60 fixed. Hourly after that: around US$15-20. Important: nothing is changed until I've confirmed and double-checked it. Please don't start work until you've accepted and I've funded it.