CALL FOR EXPRESSION OF INTEREST FOR THE TRAINEESHIP PROGRAMME - Agency for the Cooperation of Energy Regulators (Ljubljana)

Agency for the Cooperation of Energy RegulatorsACERLjubljana, Slovenia
Contract TypeTraineeship

About this position

The summary below is published by Agency for the Cooperation of Energy Regulators on the official vacancy notice. Our own analysis — salary realism, comparable openings, career trajectory, language profile — follows further down the page.

Are you a strongly motivated, highly qualified and competent young professional? If your answer is yes, you landed in the right place.

ACER traineeship programme aims to attract university graduates who are interested in developing professionally by embarking on an exciting learning opportunity.

No deadline to apply.

You can be contacted at any time to join us for March or September semester.

Position details

Reference
ACER-2024-TRAINEE-OC
Last Verified
27 October 2026

Position overview

This is the official EU Careers listing for CALL FOR EXPRESSION OF INTEREST FOR THE TRAINEESHIP PROGRAMME at ACER based in Ljubljana (Traineeship). The vacancy reference is ACER-2024-TRAINEE-OC.

Are you a strongly motivated, highly qualified and competent young professional? If your answer is yes, you landed in the right place.

ACER traineeship programme aims to attract university graduates who are interested in developing professionally by embarking on an exciting learning opportunity.

No deadline to apply.

You can be contacted at any time to join us for March or September semester.

Application timeline

This vacancy was first listed on 27 October 2026, today.

No closing date is published in the source feed for this position. EU vacancies typically remain open for four to eight weeks; check the official vacancy notice for the cut-off date and time.

Last verified against the EU Careers feed on 27 October 2026.

Where to learn more

For headcount, mission, and other open vacancies at ACER see the ACER institution page; for the cost of living, correction coefficient, and other postings in Ljubljana see our Ljubljana location page.

New to EU careers? Our beginner's guide walks through entry routes, EPSO competitions, and what to prepare. For application logistics see application tips and EPSO competitions.

Career trajectory

Career progression for this grade staff is governed by Articles 44 to 46 of the Staff Regulations (consolidated text on EUR-Lex) and Annex IB on the promotion procedure. Step increases are automatic every two years (Art. 44); grade promotion is competitive, based on the appraisal exercise (Art. 45) and the Career Development Review. For roles at ACER, progression to the next grade typically takes three to five years on merit, with two-yearly step increases in between. Article 46 governs the classification at recruitment, which sets the starting step within the grade (usually step 1 for external recruits without prior EU service, step 2 or 3 where relevant professional experience is recognised).
Mobility within the institutions is encouraged via the inter-institutional and intra-institutional vacancy publication system: temporary agents who pass the probation period and reservists from EPSO laureate lists can typically apply to internal vacancies after one year of service. Lateral moves between Directorates-General reset the seniority clock for promotion only if the new post carries a different grade.

Language profile

Beyond the formal language requirements stated in the vacancy notice, the day-to-day working languages at this employer are English and French in roughly equal measure, with German appearing in some technical files. Internal meetings and most policy drafting in Brussels run in English; French remains the preferred internal language in Luxembourg-based services and parts of DG TRADE.

Application cadence

ACER has not advertised another comparable role with the same grade and subject signature in the past twenty-four months. This opening has rarely been seen on the EU Careers feed and may be the first such posting in our two-year window. Applicants who pass the eligibility checks should not assume the same profile will reopen on a predictable cadence.

Visit the official Agency for the Cooperation of Energy Regulators website

Apply on EU Careers

Source: This job listing was sourced from the officialEU Careers portal (EPSO). First published: .

From the EU Jobs Alert guideHow to land a job at the EU institutionsA walkthrough of EPSO competitions, agency calls, and contract roles, written by our editor.Read the guide →

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