A "service librarian" refers to a librarian who provides assistance and support to library users. They help people find information, answer questions, and are knowledgeable about library resources and services. Full definition
A compilation of «best practice» resources for youth services librarians who are interested in or are currently providing outreach services to juvenile detention centers. (bagtheweb.com)
His experiences include working for large, medium and small sized libraries as an adult services librarian, systems administrator, and emerging technologies librarian. (librarylinknj.org)
Now, as a public services librarian in an academic law library, I do little targeted legal research. (slaw.ca)