The purpose of this thesis is to examine the identity, competences and professional development of corporate librarians. I have done an empirical study based on semi structured interviews with 11 information professionals who were working at Astra Zeneca at the time of the re-organizations of the company in 2009 which ultimately led to the closing of the libraries. I have also examined the views on competences and professional development of librarians in general, both in Sweden and in Denmark. I have used Thomas Brante?s theories on profession types as well as Anders Ørom?s theories on librarian identities as my theoretical framework.