Jobs at CERN

Contribute to CERN Courier’s print and digital editions by researching high-energy physics developments, generating ideas, fact-checking, proofreading, commissioning and editing articles, interviewing physicists, writing news and features, curating the website, managing social media, and coordinating with authors, institutions, publishing partners, and CERN communications colleagues.

Develop and qualify cryogenic instrumentation for CERN accelerator environments, including pressure, level, temperature, and heater systems. Maintain and extend LabVIEW-based test benches, develop facilities for electronic-card qualification and sensor calibration, analyze test data, and provide field diagnostics, maintenance, and repair support across cryogenic plants, accelerators, and test facilities. The role also involves multidisciplinary collaboration, R&D, student supervision, and work in radiation areas and underground installations.

Conduct vacuum acceptance testing, residual gas analysis, leak testing, bake-out installation, and NEG activation for HL-LHC components. Assemble, install, commission, maintain, upgrade, and repair mechanical and vacuum systems in underground and radiation-area environments. Prepare technical documentation and test reports, coordinate suppliers and procurement, and support equipment delivery. The role requires practical UHV experience, helium leak detection knowledge, mechanical installation skills, a valid driving licence, and English or French proficiency.

Test, commission, troubleshoot, and validate CERN’s high-current energy extraction control systems. Responsibilities include configuring instrumentation and data acquisition systems, debugging electrical and electronic circuits, testing PCBs, collecting and analyzing data, preparing reports, and assembling and installing electronic chassis. The role also involves underground and radiation-area work, equipment commissioning, and hands-on hardware performance validation.

Conduct experimental particle physics research at CERN by contributing to experiment and detector design, supporting detector operations, analyzing experimental data, and collaborating with international teams. The role requires postdoctoral experience, expertise in particle detectors and instrumentation, data analysis and online/offline software, and knowledge of electromagnetic radiation interactions. The position involves work in radiation areas, underground installations, and occasional nights, weekends, or holidays.

Conduct and support experimental particle-physics projects: design, develop and operate detectors, analyse experimental data (online/offline), document results, collaborate with international teams, and contribute to physics publications and detector performance.

Support coordination and execution of safety and project-management activities for accelerator upgrade, consolidation, maintenance, dismantling and commissioning. Prepare and maintain safety documentation and Safety Files, track actions and reporting, participate in meetings and site visits, contribute to risk assessments (chemical, nano, electrical, radiological), support operation readiness and on-site contractor coordination, and implement and monitor safety controls for underground and surface installations.

Develop procurement strategies, identify and qualify suppliers, conduct international tenders, analyze offers, prepare adjudication proposals, and negotiate and manage orders and contracts. The role also supports procurement process modernization, reviews technical and commercial documents, handles claims and disputes, and maintains relationships with internal stakeholders, suppliers, and external business networks.

Manage the full donor cycle: identify and qualify donors, prepare proposals and reports, secure donations and grants, build corporate and foundation partnerships, run fundraising campaigns and events, track performance, and support due diligence and communications to align fundraising with CERN project goals.

Post-doctoral research in applied physics and engineering supporting design, development, deployment and operation of experimental setups. Collaborate with multidisciplinary teams on detector technologies, materials, mechanics, electronics and computing; analyze, document and disseminate results. Fellowship matches candidates to suitable projects within CERN's Experimental Physics department.

Join a CERN experimental physics group to develop and lead an independent research programme. Analyze data, contribute to detector design, construction and operations, collaborate with international physicists and engineers, design and interpret physics analyses, and participate in seminars, training and collaborative projects. Fellowship is typically 24 months (some 36 months), fully onsite in Geneva.

Develop full-stack software for CERN’s open-source REANA platform and the EOSC Federation. Responsibilities include building federated workflow infrastructure, supporting scientific computational analyses, deploying and monitoring services on Kubernetes, and operating and developing REANA. The role involves collaboration with European research partners and researchers, open-source development, and possible standby or off-hours work.

Develop and operate CERN’s next-generation S3-based backup solution integrating disk and tape storage. Responsibilities include C++ and Python development on Linux, systems integration, configuration, testing, monitoring, performance analysis, troubleshooting, service migration planning, operational support, and documentation. The role supports tiered storage and long-term archival services, with occasional standby and work during nights, Sundays, and holidays when required.

Contribute to the design and performance evaluation of CERN’s proposed 380 GeV linear collider. Responsibilities include beam dynamics simulations, optics and layout design for interaction regions and damping rings, particle tracking studies, experimental data analysis, performance optimization, and writing the summary design report. The role requires accelerator physics expertise, simulation-code proficiency, HPC experience, strong presentation skills, and English with a commitment to learn French.

CERN offers undergraduate students in technical or administrative fields a 1–6 month practical training internship in Geneva. Interns must remain full-time students, be at least 18, hold nationality from a CERN Member or Associate Member State, and have English and/or French proficiency. Eligible study areas include engineering, computing, physics, mathematics, sciences, administration, logistics, legal services, and human resources. A monthly allowance of 1,593 Swiss Francs is provided.

Develop frontend and backend features for CERN’s REANA open-source platform for reproducible computational analyses. Support physicists and external partners, manage Kubernetes cloud deployments and operations, and contribute to application monitoring and security. The role requires full-stack software engineering experience with React, Python, Go, Docker, Kubernetes, and Helm, plus English proficiency and willingness to learn French. The position is hybrid and may include standby duty and work during nights, Sundays, and holidays.

Develop and commission PLC and SCADA control systems for CERN’s primary gas systems. Responsibilities include programming Schneider and Siemens PLCs, configuring WinCC OA supervision, defining I/O and instrumentation, developing HMIs and notifications, supporting FAT/SAT, commissioning field installations, documenting systems, and providing first-line operational support. The role involves radiation areas, underground installations, and multidisciplinary collaboration.

Develop and train transformer-based foundation models for high-energy physics detector data at CERN. Lead performance evaluation and use-case validation within the TURING project, build prototypes that generalize across detector applications, investigate self-supervised and multitask learning, optimize computational efficiency, and collaborate with experimental physics communities across Europe.

Design and optimize a potential future CERN collider through beam optics development, beam dynamics analysis, and particle tracking simulations. Study synchrotron radiation, beam-beam interactions, impedance, transverse coupling, dynamic aperture, and operational robustness across the collider’s energy range. Use accelerator physics software and HPC systems for large-scale simulations, interpret results, and communicate findings in an international multidisciplinary environment.

Develop and operate CERN's next-generation ML platform to train, deploy and manage models at scale. Manage and optimise cluster resources (on-premise, cloud, HPC), implement MLOps workflows for deployment, observability and lifecycle/versioning, and extend cloud-native infrastructure for advanced scheduling, monitoring and cost control. Produce reference architectures, documentation and collaborate across IT and research groups to support scientific use cases.