The Institute of Public Health of the University of Porto (ISPUP) opens an international selection procedure for hiring one Doctoral Researcher to carry out research activities in the scientific areas of Public Health Sciences, in the context of an individual employment contract with an uncertain resolution, under the Labour Code, approved by Law no. 7/2009, of 12 February, as amended. These research activities are carried out under the “VAX-ACTION: tackling effectively vaccine hesitancy in Europe” project, reference101133273, funded by European Union and European Health and Digital Executive Agency (HADEA).