We setup each project with it's own subdomain... so a /etc/hosts file would be something like

127.0.0.1 client7.companyname.dev our-amazing-product.companyname.dev postgres2.companyname.dev

So, then we can use the same settings, etc across devs.

Then each dev just runs the script to renew the script as they are needed (no need to share certs between devs)