Rubén is a PSF Origins postdoctoral researcher. He works on the search and characterization of exoplanets in young stellar systems using the high-contrast direct imaging technique. His research links the presence of substructures in protoplanetary disks to the formation of giant planets. When substellar companions are found, he characterizes their atmospheres via integral field spectrographs, peeking into their physical properties. To this aim, he uses a broad range of instruments in the optical to mid-IR wavelengths, such as SPHERE, CHARIS, MUSE and LMIRCam.