Candidates who are successful in a selection procedure are placed on a ‘reserve list’, from which all EU institutions can recruit directly themselves. The 'reserve list' is a database containing information on the profile, competencies and availability of all the successful candidates in a particular selection procedure.
Being on a reserve list is not a guarantee of recruitment, but on average 50% of candidates are recruited within 7 months. Reserve lists are normally valid for one year (or three years for specialists) and may be extended according to the needs of the institutions.
As job opportunities arise, the institutions check the profiles of the successful candidates in order to identify those who best match their needs (for example, in terms of education, professional experience and language skills). The institutions may also choose to publish available vacancies to successful candidates of relevant selection procedures.
The institutions are assigned a quota of candidates that they can recruit from the list based on their needs - which is normally lifted three or six months after the publication of the reserve list, and institutions can then recruit freely. Quotas may be extended up to six months for generalist profiles and from one to several years for specialists, depending on the recruitment needs of the institutions.
The institutions contact successful candidates directly for interview and, depending on the outcome, may make a formal job offer. For practical reasons, candidates may also undergo a medical examination before any decision is taken on appointment.
Here you can find links to the relevant recruitment pages of all EU institutions and agencies.