Is CERN currently hiring?

Yes, CERN is currently hiring for 16 open positions in Ireland. Use Glassdoor to find and apply for a job that loves you back. Then start preparing for your job interview at CERN by browsing Glassdoor's interview experience ratings and reviews, anonymously submitted by applicants and employees.

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As of June 2026, CERN employees rate their career opportunities with 3.7 out of 5 stars, according to 1,750 anonymously submitted Glassdoor reviews . This rating has increased by 10% over the last 12 months.

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CERN Java Developer jobs

16 results in Ireland

Backend Software Developer (Java/Python) (BE-CSS-DSP-2026-151-GRAE)
Geneva
CHF 5K - CHF 6K (Employer provided)
Easy Apply
18d
Python Software Engineer (BE-CSS-IDE-2026-114-LD)
Geneva
Easy Apply
17d
Full-Stack Web Developer (SY-EPC-CCS-2026-155-GRAE)
Geneva
CHF 5K - CHF 6K (Employer provided)
Easy Apply
10d

Backend Software Engineer - Data Processing Platform (BE-CSS-DSP-2026-126-LD)
Geneva
Easy Apply
5d
Business Analyst (FAP-BC-PM-2026-109-LD)
Geneva
Easy Apply
24d
Engineer in Charge of the Proton Synchrotron (BE-OP-PS-2026-128-LD)
Geneva
Easy Apply
24h
C++ Software Engineer (BE-CSS-DSP-2026-90-GRAP)
Geneva
CHF 6K - CHF 7K (Employer provided)
Easy Apply
25d
Technical Engineer for Water Treatment Systems (EN-CV-CES-2026-124-LD)
Geneva
Easy Apply
7d
Software Engineer for Industrial Control Systems (BE-ICS-STF-2026-110-LD)
Geneva
Easy Apply
24d
Chairs and Deputy Chairs for the Joint Advisory Appeals Board and the Joint Advisory Disciplinary Board
Geneva
Easy Apply
11d
Particle Accelerator Engineer (BE-OP-PSB-2026-106-LD)
Geneva
Easy Apply
28d
Civil Engineer (SCE-PPM-FC-2026-118-LD)
Geneva
Easy Apply
12d
Senior Civil Engineering Project Manager (SCE-PPM-2025-238-LD)
Geneva
Easy Apply
30d+
Technician for Industrial Cooling, Ventilation & Refrigeration (EN-CV-PSM-2026-122-LD)
Geneva
Easy Apply
10d
Mechanical Engineer - LHCb Calorimeter (EP-LCB-2026-163-GRAE)
Geneva
CHF 5K - CHF 6K (Employer provided)
Easy Apply
4d
Instrumentation Engineer (TE-CRG-IC-2026-108-GRAP)
Geneva
CHF 6K - CHF 7K (Employer provided)
Easy Apply
5d

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