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. The study finds that the respondents have a strong sense of identity as librarians. The interviews revealed that corporate librarians can be considered as having higher status compared to other librarians and that it is primarily based on the fact that the compensation is better in the private sector. The interviews also revealed that being service minded, thorough, social as well as of a curious disposition are regarded as key skills among librarians. The study finally concludes that teaching is an important part of the librarian identity and that Ørom’s model in general proved inadequate when applied to corporate information professionals.