Jobs at CERN

Develop and maintain full-stack applications using Java, React, Spring Boot, Oracle, and BPMN to support CERN engineering and access-management processes. Collaborate with engineers and IT specialists to gather requirements, implement solutions, test and debug software, optimize performance, and participate in Agile development. The role requires strong collaboration in an international environment, English proficiency, willingness to learn French and CERN-specific processes, and adherence to graduate eligibility requirements.

Operate and maintain CERN’s EOS distributed storage services at exabyte scale. Troubleshoot and optimize software, hardware, and network layers; contribute to platform development, testing, deployment, automation, observability, reliability, and performance improvements. Collaborate with users, developers, service managers, and external partners supporting scientific computing and data management services.

Supports High-Luminosity LHC installation activities during LS3 by tracking worksite progress, updating schedules and 3D models, analyzing engineering changes, coordinating meetings, reporting issues, and supporting installation readiness reviews. The role requires field work in underground and radiation areas, stakeholder coordination, schedule control, and preparation of de-installation and installation procedures.

Develop and operate CERN collaboration and communication services, including email, group management, media, and Microsoft 365 integrations. Manage identity and group synchronization across Active Directory, Entra ID, and Exchange Online; improve provisioning, reliability, observability, scalability, and security. Contribute to software development, infrastructure automation, troubleshooting, and strategic media and conferencing projects. Serve as deputy email service manager and collaborate with infrastructure, security, and IT teams in a hybrid international environment.

Develop and maintain the Open Research Europe publishing platform based on Open Journal Systems. Responsibilities include PHP and Laravel development, plugin and integration testing, open-source contributions, Kubernetes/OpenShift deployment, CI/CD automation, infrastructure maintenance, performance testing, documentation, and operational support. The role is hybrid, includes possible standby and out-of-hours duties, and requires no more than two years of professional experience after graduation.

Develop system-level simulation models and digital ASICs for advanced particle-detector electronics. Responsibilities include architecture modelling, circuit implementation, verification, validation, performance optimization, technical documentation, multidisciplinary collaboration, and team supervision.

Design and validate a radiation-tolerant RISC-V microcontroller ASIC for CERN detector and accelerator systems. Responsibilities span requirements, SoC architecture, RTL and peripheral IP development, fault-tolerant design, verification, physical implementation, tapeout, and post-silicon testing. The role requires digital IC design experience, ASIC flow knowledge, embedded C development, Python scripting, and familiarity with RISC-V, CMOS radiation effects, and Linux/Unix.

Design, operate, troubleshoot, and optimize large-scale distributed storage services based on Ceph across CERN’s multi-datacenter infrastructure. Develop C++ improvements for Ceph, support block, object, and filesystem services, automate deployments, improve observability, respond to incidents, provide user support, and collaborate with international stakeholders.

Develop, integrate, and test FPGA gateware and embedded SoC firmware for high-speed beam-position monitoring systems. Implement data acquisition, real-time digital signal processing, and embedded processing algorithms. Validate systems in laboratory and accelerator environments, perform Python-based data analysis, support measurement campaigns, and collaborate with engineers, physicists, and technicians at CERN.

Operate PVD sputtering systems, including assembly, vacuum pumping, bakeout, deposition, and disassembly. Measure thin-film thickness and composition using X-ray fluorescence, validate NEG coating performance, and perform quality control. Prepare technical reports and procedures, and support tooling design, procurement, and assembly. The role involves vacuum technology, materials characterization, onsite work, radiation areas, underground installations, and occasional night, Sunday, and holiday interventions.

Develop algorithms for the CMS Level-1 trigger, implement them in FPGA firmware, evaluate physics performance, maintain collaborative software contributions, and support monitoring, hardware testing, installation, and presentations. The role requires C++, Python, Git, ROOT, machine learning, HDL, HLS, CI, and data analysis experience, with team supervision responsibilities and occasional underground installation work.

Advises CERN management, data subjects, and external entities on privacy compliance across the personal-data lifecycle. Responsibilities include privacy risk assessments, data transfers, contracts, breach response, governance, data-subject rights, complaints, regulatory relationships, audits, awareness campaigns, training, and privacy projects. The role requires strong data-protection expertise, knowledge of EU regulations, compliance auditing, stakeholder management, bilingual English and French communication, and independent judgment.

Develop and maintain ATLAS Long Shutdown 3 installation schedules, monitor progress, report delays, and propose recovery measures. Coordinate with Project Engineers and Leaders on schedule changes, status reporting, and upgrade project updates. Contribute to scheduling-tool improvements and supervise a small software engineering team maintaining Oracle database interfaces and information-management tools.

Develop and implement strategic communications for CERN’s Next Generation Triggers project. Create scientific content for websites, social media, publications, videos, campaigns, and events; manage the project website and visual identity; analyze campaign performance; support CERN STEAM Academy communications; and coordinate with stakeholders across CERN, ATLAS, CMS, and other international teams.

Supports qualification, integration, testing, commissioning, and performance validation of the ATLAS detector’s two-phase CO₂ cooling system. Responsibilities include thermal-fluid testing, CAD design, instrumentation and DAQ development, simulation comparison, experimental data analysis, detector integration, and installation of cooling distribution and vacuum infrastructure. The role also involves underground and radiation-area work, standby duties, and occasional work during nights, Sundays, and holidays.

Design and develop mechanical systems for the LHCb detector, producing CAD models, technical specifications, engineering documentation, and manufacturing drawings. Collaborate with physicists, engineers, and technicians, and support equipment manufacturing, assembly, testing, and installation. Contribute to digital mock-up and digital twin methodologies. The role is fully onsite and involves radiation areas, underground installations, and electromagnetic-field exposure.

Develop and maintain embedded control applications for CERN’s LHC Collimator Control System using FESA, C++, and Python. Support commissioning, functional and system-level testing, validation of interlocks and fail-safes, alarm-server integration, monitoring tools, expert interfaces, diagnostics, and operational troubleshooting. The role requires collaboration across multidisciplinary engineering teams in a fully onsite environment.

Coordinate complex European and strategic projects, including planning, stakeholder engagement, milestone tracking, risk management, reporting, documentation, and deliverables. Manage ATS Specification Committee technical reviews and project governance. Organize workshops, technical reviews, and major events, while coordinating communications, outreach, and change management. Maintain project plans, repositories, KPIs, and status reports, and support technical project leaders in an international, multidisciplinary environment.

Develop, qualify, calibrate, and maintain cryogenic instrumentation for CERN accelerator systems. Maintain LabVIEW test benches, develop facilities for radiation-tolerant electronics and pressure-sensor calibration, analyze data, and provide field diagnostics, maintenance, and repair support. The role also involves electrical troubleshooting, multidisciplinary collaboration, student supervision, work in radiation areas and underground installations, and occasional training.

Design and operate CERN’s shared AI and machine-learning platforms for physics experiments and services. Develop the Next Generation Triggers platform, build an open-source MLOps ecosystem, and support model lifecycle management, evaluation, monitoring, and deployment. Collaborate on AI use cases across heterogeneous computing infrastructures, optimizing GPU and accelerator workloads for training and inference. The role requires Linux, cloud-native, Kubernetes, CI/CD, observability, and system configuration expertise, with occasional standby work including nights and holidays.