You do not want to look in his profile. Instead… you want to look at the threads he (or other developers) creates. They generally post the invitation link to install their drivers in their first post.
for example → https://community.smartthings.com/t/edge-driver-mc-zigbee-switch-mc-zigbee-switch-power-mc-zigbee-multi-switch-and-child-mc/236953 if you scroll to the end of the very first post… he has the invitation link. Click on it, login to see all his drivers. 