After you set up a custom domain, your Careers Page will be hosted on your domain, but on HTTP rather than HTTPS. Your Careers Page will now appear as ‘not secure’ on web browsers like Chrome.
At the moment, GoHire doesn't natively host SSL certificates for your Careers Page.
To get SSL working, you will need to use a third party. Cloudflare are highly recommended, as they offer a flexible SSL service that acts as a proxy between the end user and your Careers Page, ensuring requests are routed over SSL.
TIP: To set up your Careers Page with SSL check out this article.