The theoretical physics division at Uppsala University is offering a PhD position, starting in Fall 2018, in the fields of Quantum Field Theory, Conformal Field Theory and String Theory. The position is funded by the Wallenberg Academy Fellows grant ''Constraining Conformal Field Theories''. The application must include a cover letter where the applicant describes herself/himself, her/his merits and research interests as well as a CV, copies of university grades, completed theses or manuscripts and any relevant publications. We appreciate if two letters of recommendation are included to be sent directly to phd.uppsala2018@gmail.com The deadline for applications is April 20, 2018. For further details, including the link to the application form, see http://inspirehep.net/record/1659213