physicist Jobs in Genf

You will work on electromagnetic simulations for wake field and beam coupling impedance studies in accelerator components as well as their coupling with beam dynamics.A key objective of the project is the further development of Wakis, an open-source wakefield simulation code available on GitHub, including the implementation of new features, benchmarking...

In this role, you will develop and improve GPU-accelerated Monte Carlo detector simulation software within the Geant4 team, with a particular focus on optical-photon transport. You will contribute to software design and implementation, physics validation against established CPU simulations, performance optimisation, and integration into experimental software...

The NGT Real-time Reconstruction Revolution will transform the CMS High-Level Trigger into an offline-quality reconstruction facility processing up to 750 kHz of events. To make this sustainable, you will lead the design of two complementary data tiers: a low-level reconstructed format that enables trigger rates several times higher than conventional...

In this role, you will join a multidisciplinary team of laser physicists, control engineers, and machine learning specialists to develop the automation layer of TALISMAN, a project aimed at automating laser ionization for the production of medically relevant radionuclides.The work combines hands-on laboratory activities with the design, prototyping, and...

As Radiation Protection Physicist you will be part of the Occupational Health & Safety and Environmental Protection (HSE ) Unit, namely the Accelerators & Sites (AS) section of the HSE Radiation Protection (RP) Group. You will join a dynamic team, working on the radiation protection aspects of the operation, and the upgrades of the Large Hadron Collider (LHC...

Join the ATLAS experiment at the HL-LHC during a pivotal moment. In this role, you will help operate one of the world’s most advanced calorimeter systems and shape the next-generation upgrade that will enable groundbreaking physics in the years ahead. You will work closely with experts developing, operating, and innovating the software and control systems...

You will contribute to the operation and development of the CLEAR user facility, optimizing beam parameters to meet experimental needs. The role includes coordinating with user groups, supporting experiments, and following up on requests. A key focus is on medical research, including Very High Energy Electrons (VHEE) and FLASH radiotherapy. You will...

You will be part of the Experimental Physics (EP) Department, which carries out basic research. This Department aims at providing a stimulating scientific atmosphere and remains an important reference centre for the European physics community.Your responsibilitiesContribute to particle physics experiment projects at CERN.Participate in the design and...

Join the ALICE experiment team at the Large Hadron Collider to contribute to cutting-edge research on Quark-Gluon Plasma and high-rate heavy-ion collisions. We are seeking an applied Physicist with strong expertise in Time Projection Chamber (TPC) calibration to support the optimization, correction procedures, and data-quality workflows of the upgraded ALICE...

As an Applied Physicist, you will join the ATLAS Group at CERN and be part of the team which is working on the upgrade of the muon spectrometer of the ATLAS detector. In this upgrade you will play a crucial role, leading the electronics integration in the new RPC detectors to be used in the Inner layer of the Barrel Muon Spectrometer.An important part of the...

This role focuses on the LHCb VELO detector, covering its operation, maintenance, and future upgrades. During the Long Shutdown 3 (LS3) in late 2026, you will help prepare the detector, ensure its safe state, and coordinate maintenance activities. You will support the replacement and testing of VELO modules using a dedicated CERN test setup and assist...

Join a team of physicists and engineers working on the development of detector concepts for the FCC-ee physics program. You will be responsible for developing simulation software to model the performance of MAPS sensors, used in the vertex detectors of several detector concepts. You will also contribute to the development of a novel Tracker concept entirely...

As an applied physicist, you will be part of the RICH Detector strategic R&D activities and the LHCb RICH Upgrade project. This includes studies of novel single-photon detectors such as SiPMs (Silicon Photomultipliers) at cryogenic temperatures, calibrations of readout electronics in the sub-100 ps time domain and measurements of prototype optics for RICH...

You will be part of the Experimental Physics (EP) Department, which carries out basic research. This Department aims at providing a stimulating scientific atmosphere and remains an important reference centre for the European physics community.Your responsibilitiesContribute to particle physics experiment projects at CERN.Participate in the design and...

The project focuses on advanced beam dynamics studies. Building on beam tests at the LHC completed in 2025 as part of theTWOCRYSTexperiment, the work will analyse data from a fixed-target setup using bent crystals. You will support studies for a future experiment, including evaluating required machine modifications and timelines.Working with detector and...

The Global Hardware Trigger is part of the upgrade to the Trigger and Data Acquisition that ATLAS plans to deploy for the High-Luminosity LHC programme (HL-LHC). It is a custom hardware, real-time data processing and filtering system, currently under construction, that uses fine-granularity detector information and will employ advanced pattern recognition...

As an Applied Physicist, you will contribute to the High-Luminosity LHC (HL-LHC) project, which aims at a six-fold increase of the integrated luminosity of the Large Hadron Collider (LHC). Your task will be to assess limitations and find mitigations for collective effects in the machine, in particular from beam-induced impedance.Be sure to meet the...

Applied Physicist, Beam-Dust InteractionsDatum: 22 september, 2026 Tid 11:59Placering CERNMer informationWhat you'll doDo you want to contribute to solving a long-standing mystery of particle accelerators: why can tiny dust grains have such a big impact on high energy particle beams? This could be the perfect opportunity for you.You will lead the development...

Are you excited about giving a second life to a vintage but invaluable set of data, which has the potential to significantly enhance the quality of the preparation studies for the next flagship collider at CERN, the Future Circular Collider?The LEP data@EDM4HEP project aims at migrating the data collected and LEP in the 1990s, and the corresponding Monte...

You will contribute to improving the performance of a Penning trap used in the HIE-ISOLDE post-accelerator to accumulate, cool and bunch high-intensity radioactive ion beams prior to charge breeding and acceleration. The work includes mechanical design and modification of internal trap components, production follow-up and quality assurance, as well as...