Techs on RationalWiki are appointed by the Operations Manager (or other sys admins of the site) to do—as the title suggests— technical work. For instance, techs can edit the MediaWiki namespace and delete pages with large histories. However, unlike moderators, they have no community authority.
You can request to be appointed a tech at RationalWiki:Requests for tech rights.
 Current techs
See Special:ListUsers/tech for a list of current techs.