Projects and research lines of the grid computing group at IFIC are presented. These projects can be divided in two main groups related to the subject of research. The first one is related to physics projects in particular to the GRID infrastructure needed to provide solution to the high CPU demanding and huge storage capacity demanding experiments related to the Large Hadron Collider at CERN. Between these experiments there is special relation with the ATLAS experiment, one of the four main experiments devoted to search new physics at the LHC. The other research line is related to Medical Physics and in particular the use of GRID technologies for the specific applications for Radiotherapy or the recent field of Hadrontherapy.