Research with neutrons, with its interdisciplinary approach, is indispensable for modern science. The neutron community is nowadays facing an important task to ensure long-term perspectives, that essentially depend on its ability to create a new generation of innovative highly-skilled researchers. To tackle this challenge, Forschungszentrum Juelich (FZJ), Technical University Munich (TUM) and Helmholtz-Zentrum Hereon (Hereon), partners at the Heinz-Maier-Leibnitz Zentrum (MLZ), commit to train young neutron scientists through the establishment of a well-structured post-doctoral research programme with a strong interdisciplinary and intersectoral approach and a global network in cooperation with the present and future, such as the European Spallation Source (ESS), world-leading neutron sources. In order to maximize the outcome for fellows, the three MLZ partners join forces with 19 partner organisations from around the world representing research, academia and industry. The GNeuS programme provides the best conditions for training of the next generation of neutron researchers to solving the grand challenges facing mankind in areas such as environment, energy, key technologies and life sciences. The GNeuS 5-year programme offers a total of 45 fellowships, in 3 different calls, each with a duration of 24 months, co-financed by the MLZ-partners (FZJ, TUM and Hereon) and the European Commission under the Marie Skłodowska-Curie Actions (MSCA) programme (EU Grant N. 101034266). The MLZ partners act as hiring organisations and the non-hiring partner organisations will provide fellows with options for secondments.