ALECS ran 3 internationally advertised calls. Researchers were selected following an open, transparent, merit-based, impartial and equitable selection procedure. There was a peer review stage followed by an interview stage. 20 fellows were recruited over 3 calls. There was a diverse mix of 17 nationalities across the fellows. ALECS complied with the H2020 ethics policy. All ALECS host universities have specific procedures for ethical approval in line with national ethical regulations. The fellows followed their host university's ethics guidelines and submitted an ethics review application to their host university for projects with ethical issues. All projects that required ethical approval received full ethical approval, which was obtained prior to commencing any project activity involving ethical issues. ALECS offered a training programme that was specifically developed to meet the needs of the fellows and the changing needs of the software sector, both in academia and industry, thus facilitating the rapid development of fellows to key leadership positions in the field. It comprised courses, workshops and online modules covering topics such as communications and public engagement, commercialisation and IP, proposal funding and research project management, teaching and scholarship, open science, and equality, inclusion, and diversity training. All fellows had access to the researcher development programme at their host university, which complemented the training organised by ALECS. ALECS fellows established multiple interactions with the non-academic sector via secondments and through research engagement and collaboration with industry and other non-academic organisations. In addition, they participated in various external research collaborations between their host university and other academic institutions, both in Ireland and abroad. Overall, the fellows completed: 765 training activities,178 dissemination outputs, and 156 EPE activities (70 EPE/communication training and 86 EPE activities).As a result of the comprehensive training programme and research opportunities provided by ALECS, the fellows successfully secured advancing career positions. 69% of ALECS alumni continue on to successful careers in academia, while 31% secured positions in the non-academic sector. 44% of ALECS alumni are based abroad, and 56% continue their careers in Ireland.