In our EURAXESS Worldwide Tutorial series we are publishing practical advice for mobile researchers. Today, we are zooming in on the benefits of becoming an independent expert for H2020 proposal evaluation. The European Commission is constantly looking for experts to assist in the evaluation of proposals and project monitoring and to join the peer review groups for Horizon 2020 Framework Programme for Research and Innovation. The call for experts and registration is open throughout the whole period for the Horizon 2020 framework programme (2014-2020). Find out here how you can participate.