His key area of expertise is in the design of mixed-signal integrated circuits for radiation detectors readout, with emphasis on the design of front-end amplifiers, analog-to-digital, time-to-digital converters and on system integration. From 2001 to 2007, A. Rivetti had leading roles in the design and characterization of the front-end electronics of the Silicon Drift Detectors of the ALICE experiment at CERN and in the development of CMAD, a front-end ASIC originally conceived for photomultiplier tubes and now used to read-out several in the COMPASS experiment at CERN. In the same years, he initiated also R&D programs on front-end electronics for hybrid pixel detectors for the experiment PANDA at GSI and NA62 at CERN. The latter development is at the root of a primary technology transfer program, of which A. Rivetti is presently in charge for INFN. From 2010 to 2012, A. Rivetti served as the national project leader of LePix, a GRV initiative carried-out in cooperation with CERN, aiming at assessing the feasibility of fully depleted monolithic sensors implemented in standard CMOS technologies ported on high resistivity substrates. In 2011 he was convener for the start-up of the upgrade of the ALICE ITS, which is today fully based on the use of advanced CMOS sensors. From 2009 to present he has been activity leader for microelectronic work-packages in the framework of the HadronPhysics2 and HadronPhysics3 European projects, developing ultra-low power front-end electronics for hybrid pixel detectors. Along the years, A. Rivetti has served as external advisors and design reviewers in several projects for institution such as the Laboratory for Instrumentation in Physics (LIP), in Lisbon, CERN and the AGH in Krakow. A. Rivetti serves regularly as reviewer for the IEEE Transaction on Nuclear Science, Nuclear Instruments and Methods, the Journal of Instrumentation and the IEEE Transaction on Circuit and System. He has been in charge for the IEEE for the organization of the short course on front-end electronics in the 2011 and 2013 editions of the Nuclear Science Symposium. At present, he is supervising a group of ten PhD student and post-doc active in the design of mixed-signal ASICs for several experiments, such as the CMS upgrades, ALICE, BESS and PANDA as well as for PET instrumentation.