The objective of this programme is to refine an existing fellowship scheme, enabling Experienced Researchers to undertake up to two years of research outside of Ireland, with a one-year return period to Ireland. Eligible researchers are Experienced Researchers (ER, EU definition) of any nationality and/or residency, who received the majority of their research training in Ireland, and who have been an ER for no more than 5 years (careers breaks of up to 5 years exempted). ERs can freely choose the host organizations for the outgoing phase worldwide and for the return phase in Ireland. The research project may be of any topic that falls within the broad area of Science, Engineering and Technology. The choice of host organizations and research topic must be made fitting the researchers’ career development needs. The mobility period abroad will allow the fellows to add an international dimension to their research career and to gain additional skills and expertise. The return phase will allow the fellows to integrate fully back into Ireland, both utilizing and transferring the various skills they acquired during the outgoing phase. The entire fellowship will broaden and deepen the scientific and complementary skills of the researchers, thereby contributing to the career development of the researchers. Career development support mechanisms are provided for. IRCSET will execute and manage the programme. IRCSET already operates a number of research fellowship schemes, and will appoint a dedicated Programme Leader to the new scheme. IRCSET proposes to publish two calls for proposals; to award 25 fellowships of 36 months (Call 1) and 25 fellowships of 30 months (Call 2). Appointment conditions for fellows align with those specified in the Code and Charter. The value of the fellowships is based on the financial regime for Marie Curie Outgoing International Fellowships. The programme will run an open and merit-based competition, founded on international peer-review.