Joint Research Centre

Mission and mandate

The Joint Research Centre traces its origins to Article 8 of the Euratom Treaty of 1957, which created a 'Joint Nuclear Research Centre' to coordinate the EC's nuclear research. The Centre evolved substantially over subsequent decades from a nuclear-focused entity into a multi-disciplinary research organisation supporting all areas of EU policy. The JRC's current legal basis is the Euratom Treaty (for its nuclear research mandate) and the Commission's internal organisational decision (for its broader research mandate as a Directorate-General of the European Commission).

The JRC's mandate is to provide independent, evidence-based scientific and technical support to EU policy-makers throughout the policy cycle. Its work covers: agriculture and food security; climate change and energy; economic and monetary union; environment and natural resources; financial and economic analysis; health; innovation, education and skills; nuclear safety and security; safety and security; standards and methodology; transport.

The JRC operates as a Directorate-General of the European Commission. It does not draft policy itself — that is the role of the policy DGs (DG ENV, DG CLIMA, DG ENER, DG AGRI, DG SANTE, DG TRADE, DG ECFIN, DG GROW, DG REGIO, DG EMPL, DG INTPA, DG MOVE, DG CNECT, DG HOME, and others) — but provides the scientific evidence, modelling, datasets, and analysis on which Commission policy decisions depend. The JRC publishes around 1,500 peer-reviewed papers per year, runs around 200 active scientific projects, and operates around 20 major scientific infrastructures and reference laboratories.

Key JRC programmes and infrastructures include: the European Soil Data Centre and the European Atlas of Natural Capital; the EU Pollutant Release and Transfer Register (E-PRTR) in cooperation with ECHA and EEA; the EU Food Safety Risk Assessment in cooperation with EFSA; the JRC nuclear reference laboratories at Karlsruhe and Geel; the European Research Reactor (HFR) at Petten in cooperation with NRG; the European Crisis Centre (EU-CSAP) at Ispra supporting EU crisis-response capacity; the JRC AI Watch and the EU AI Office's technical support function; the European Joint Programme on Anti-Microbial Resistance; the European Data Spaces support; the Single Information Space on biodiversity (SISB); and many others.

Structure and operational divisions

The JRC is led by a Director-General appointed for a renewable five-year term — currently Bernard Magenhann (since 2024). The Director-General reports to the Commissioner responsible for the JRC (currently Ekaterina Zaharieva, Innovation, Research, Culture, Education and Youth). The JRC has Deputy Directors-General for each site and for cross-cutting functions.

Internal organisation is grouped into ten scientific directorates plus corporate-services directorates. The scientific directorates broadly mirror the EU policy spectrum: Resources (focused on sustainable resources, food security, and bioeconomy at Ispra); Energy, Mobility and Climate (Petten and Ispra); Sustainable Resources (Ispra); Space, Security and Migration (Ispra); Innovation and Growth (Seville); Knowledge for the Energy Union (Petten and Ispra); Joint Research Centre Brussels Office (Brussels, supporting institutional coordination); Knowledge Management and Communication; Resources and Services; and the Director-General's Office.

The Ispra site is the largest — around 1,500 staff — and hosts the broadest range of scientific work including the European Crisis Centre, the EU Reference Laboratory for Mycotoxins, the EU Reference Laboratory for Genetically Modified Food and Feed, the European Soil Data Centre, the JRC Atmospheric Chemistry laboratory, and many others.

The Geel site is focused on reference materials and measurements — the JRC operates the EU's central reference-materials laboratory and produces certified reference materials used by analytical laboratories across the world. Geel also hosts food-safety chemistry work in close cooperation with EFSA.

The Karlsruhe site is focused on nuclear safety, security, and safeguards — including transuranium research, nuclear fuel and material characterisation, and the EU's nuclear safeguards work in cooperation with the IAEA and Euratom.

The Petten site is focused on energy and transport research, hosts the High Flux Reactor (HFR) in cooperation with the Dutch nuclear-research organisation NRG, and runs research on hydrogen technologies, energy storage, and clean energy systems.

The Seville site (the Institute for Prospective Technological Studies, IPTS) is focused on prospective and policy-modelling work, the digital economy and skills agenda, foresight, and techno-economic policy analysis.

Hiring landscape over the last 12 months

JRC hiring is one of the largest of any EU institution by scientific-research volume. The JRC recruits through EPSO competitions (the AD5 and AD7 generalist competitions are subscribed by the JRC), through specialist competitions for specific scientific disciplines, through direct JRC vacancy notices for specific projects and posts, through the Collaborative Doctoral Partnerships (CDP) programme funding doctoral students at member-state universities working on JRC research topics, and through the JRC Traineeship programme.

In the last 12 months the JRC has been a regular subscriber to EPSO's AD5 and AD7 reserve lists and has published numerous direct vacancy notices for: nuclear-safety researchers at Karlsruhe; energy and hydrogen researchers at Petten; climate, environment, and agriculture researchers at Ispra; reference-materials chemists at Geel; prospective and policy-modelling researchers at Seville; AI and digital researchers across multiple sites; and corporate-services and IT specialists across all sites.

Contract-agent hiring at FG III and FG IV is concentrated in IT, scientific support, laboratory operations, communications, finance, and HR. The JRC is one of the largest individual users of CAST Permanent across the EU institutional landscape.

Seconded national experts from national research institutes, ministries with research portfolios, universities, and the European research-infrastructure community are a substantial channel — typically 100+ SNE postings active at any given time across all sites. The JRC also runs an extensive grant-funded researcher programme through which doctoral candidates and post-doctoral researchers spend one-to-three-year periods at JRC sites.

The candidate pool for JRC scientific posts is large and highly specialist: researchers with PhDs in physical sciences, life sciences, social sciences, engineering, mathematics, computer science, and many sub-disciplines.

Salary realism by grade and site-specific coefficients

JRC staff are paid under the EU Staff Regulations. Duty-station coefficients vary by site: Brussels 100, Ispra 99.6 (effectively Brussels parity), Geel approximately 100, Karlsruhe 99.2, Petten 109.9, and Seville 96.3. The choice of site is therefore a substantial financial and quality-of-life decision.

At AD7 step 1, for example, the monthly basic grosses €7,876 × 1.099 = €8,656 at Petten (the highest); €7,876 × 1.00 = €7,876 at Brussels and Geel; €7,876 × 0.996 = €7,844 at Ispra; €7,876 × 0.992 = €7,813 at Karlsruhe; and €7,876 × 0.963 = €7,586 at Seville. With expatriation (16%) and household allowance for a married hire with one child the on-paper figure for an AD7 typically lands around €10,000–€11,500 gross monthly depending on site and family configuration.

The site-specific cost-of-living realities are also substantially different. Ispra and Geel are smaller localities with low to moderate cost of living and limited international-school options (though the JRC supports the European School at Varese for Ispra families). Karlsruhe and Petten are medium-sized university towns with moderate cost of living. Seville is a major Spanish city with moderate cost of living and a strong international-school landscape. Brussels is the standard EU institutional environment.

Net purchasing power for an AD7 across the JRC sites can vary materially: families typically find Petten and Seville the best combinations of coefficient and cost of living, while Ispra offers an unusual quality-of-life proposition (Italian Alpine lake environment) at near-Brussels parity. The choice between sites is one of the most consequential decisions a JRC candidate makes.

Languages, security clearance, and competition profile

English is the dominant working language across all JRC sites. Local languages (Italian at Ispra, Dutch and Flemish at Geel and Petten, German at Karlsruhe, Spanish at Seville, French and Dutch at Brussels) are useful for daily life but not required for scientific work. The regulatory second-language minimum applies under the Staff Regulations.

Most JRC staff do not require security clearance. Selected work at Karlsruhe on nuclear safeguards, transuranium research, and material control requires EU Confidential or EU Secret. Work on EU security-related research and cybersecurity at Ispra and elsewhere may require operational confidentiality undertakings or, for selected posts, EU Confidential. Clearance is granted by the home member state.

The JRC recruits via EPSO for its generalist scientific posts, with substantial direct-vacancy hiring on top. The competition profile varies by site and discipline: for nuclear and material-characterisation work the pool is small and the bar is highly specialist; for AI and data-science work the pool is large and the competition is intense; for climate, environment, and energy research the pool is large and specialist. Internal mobility between JRC sites is encouraged but is in practice limited by the operational specialisation of each site.

Application paths

Five main routes. EPSO official: pass an EPSO competition (the AD5 and AD7 generalist competitions are the most relevant for general scientific staff; specialist competitions are run for nuclear physicists, chemists, IT specialists, and other discipline-specific roles), enter a reserve list, and wait to be selected for a specific JRC vacancy. The JRC is a large user of EPSO reserve lists.

Direct JRC vacancy: temporary agent posts are increasingly used for specialised research roles. Apply directly to published vacancy notices on the EU Careers platform; expect a CV and motivation letter screening, a written test (frequently a research or technical case study), and a structured competency-based interview.

Contract agent: a substantial share of hiring, concentrated in IT, scientific support, laboratory operations, communications, finance, and HR. Candidates register on CAST Permanent in the relevant function group and respond to JRC notices.

Seconded national expert: serving researchers from national research institutes, ministries with research portfolios, and universities apply through their national point of contact. SNE postings are typically two to four years and are particularly important for specific scientific projects requiring deep national-system expertise.

Grant-funded researcher / post-doctoral / trainee: the JRC runs Collaborative Doctoral Partnerships, post-doctoral programmes, and the JRC Traineeship. These are time-limited (one-to-three-year) opportunities that provide a gateway into the JRC ecosystem and often lead to subsequent EPSO or TA recruitment.

A practical note: the JRC has a distinctive scientific-research career path that combines public-service stability with substantive research opportunity. Career scientists at the JRC can spend their entire EU career at a single site, develop deep specialism, and publish actively in their field. Lateral mobility into national research institutes, universities, and academic-research positions in the host country is well-established.