We are using https://www.workato.com/ for onboarding, role change and exit processes. For example we provision and deprovision system access triggered by our centralised HR system.
I would love to see an integration for Aha! as well so we can deprovision our users when they exit the company. Provisioning itself works via SSO but we wouldn't mind creating accounts for our new users as well so they receive a welcome message from Aha!