Since the opening of the first staff-less public library (meröppna biblioteket) in Sweden in 2009, the number of staff-less libraries has been growing at an increasing rate. Still, there has been little research published on this recent phenomenon in the Swedish library sector. The aim of this thesis is to fill a part of this gap by focusing on librarians employed at staff-less public libraries. The study targets their experiences with regard to changes in work content, competence requirements, and professional role. The findings are based on eight interviews conducted with ten librarians at staff-less libraries in six Swedish municipalities. The material has been analyzed using part of Wrzesniewski and Dutton’s job crafting model as the theoretical framework. In addition, Ellström’s concept of actual competence (rather than formal competence) and Ørom and Schreiber’s definition of librarians’ professional identities have been used to support analysis. The findings show that the introduction of staff-less opening hours impacts the librarians’ work content in terms of tasks, cognition, and patron interactions. This in turn makes room for librarians in staff-less libraries to develop existing or new competences. Changes in the professional role due to the introduction of the staff-less library are more difficult to identify. These changes seem to be triggered by developments in society rather than by changes at the local level.