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Company Description At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction: Are you an Applied Physicist with a passion for challenging and exciting projects in the field of particle physics experiments? Then seize the opportunity and join the ATLAS group in CERN's Experimental Physics Department (EP) to participate in the integration of the next generation silicon tracker for the ATLAS experiment, the Inner Tracker (ITk). The CERN ATLAS Team plays a major role in many areas of the ITk Pixel Outer Barrel. Within our team, you will contribute to the integration and commissioning of leading-edge technical solutions for this next generation particle detector. Functions: The selected candidate will play an important role in the integration and surface commissioning of the ITk Pixel Outer Barrel for the Phase-II upgrade of the ATLAS experiment. This activity includes the integration and quality control of parts of the Outer Barrel during its construction and installation on surface. It involves the reception test of the components, and the testing and evaluation of the detector parts, as well as the monitoring of the integration progress and implementation of components in the production database. The candidate will install and operate the setup and test infrastructure in the surface laboratory, interface with the different teams involved in the integration of the Outer Barrel and contribute to achieving a fully functional detector. Qualifications Master's degree or PhD or equivalent relevant experience in the field of the field of electronics engineering or physics or a related field. Experience: -Demonstrated experience in the field of semiconductor detectors for particle physics experiments. -Proven experience in silicon detector operation and quality control including the development, installation and commissioning of laboratory infrastructure. -Experience in performance evaluation of silicon tracking systems. -Experience in working in a multi-disciplinary team and international collaboration, including physicists, engineers and technicians involved in work on detector construction. Technical competencies: -Knowledge and application of solid-state based particle detection technologies: especially silicon detectors for high energy particle experiments. -Assembly and integration of detectors: in particular construction of silicon detectors. -Organisation, planning and control: including supervision of students and technicians. -Testing and validation of detector components, including electrical characterisation and quality management of semiconductor detectors. -Assembly and operation of infrastructure for detectors. Behavioural competencies: -Achieving Results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind; producing comprehensive work / project plans taking into account resources and contingencies. -Working in Teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities; building and maintaining constructive and effective work relationships. -Demonstrating Accountability: working conscientiously and reliably; delivering on promises; presenting information accurately and objectively. -Demonstrating Flexibility: demonstrating a willingness to accept changing circumstances; supporting initiatives for change; being willing to work on different projects simultaneously; readily absorbing new techniques and working practices; proposing new or improved ways of working. -Communicating Effectively: ensuring that information, procedures and decisions are appropriately documented; expressing opinions, ideas and suggestions with conviction and in a logical/structured manner; keeping to the point. Language skills: Spoken and written English, with a commitment to learn French. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States.We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 16.10.2025 at 23:59 CEST. Employment Conditions: Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: -Work in Radiation Areas. -Interventions in underground installations. -A valid driving licence. -Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Company Description At CERN, the European Organisation for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction Are you an engineer or a physicist, interested in design, production, installation and operation of complex high-voltage and RF systems? Are you interested in how RF power is generated to accelerate the particle beams? Take part! You will join the Accelerator Systems Department (SY), which is responsible for the beam-related technical systems of the CERN accelerators. The SY teams design, build and operate equipment systems in all CERN accelerators, and are engaged in ambitious forward-looking R&D programmes.? You will join the MKS Section, of the Radiofrequency Group. The MKS sections designs, builds and operates the klystron-based RF power systems at CERN. This includes the LHC, Linac4, CLEAR and AWAKE accelerators, plus several RF test facilities dedicated to acceptance tests and R&D for power systems Functions We are looking to recruit two professionals to join the RF Group. You will: -Lead the operation, troubleshooting and maintenance of the RF systems in UHF band for the LHC and Linac4. -Coordinate the experimental program of UHF band test facilities across CERN. Define the testing campaign and analyse the results giving timely feedback to production in outside firms. -Act as the primary technical interface with industry partners for the production and qualification of vacuum tubes and other high-power RF devices. -Follow up the prototyping and manufacturing of the new RF-sources for the Future Circular Collider. -Design and build a state-of-the-art test facility dedicated to the new FCC RF power system. -Produce comprehensive technical documentation including operating procedures, detailed test reports, safety assessments, and procurement specifications. -Supervise and mentor junior colleagues. Qualifications Master's degree or PhD or equivalent relevant experience in the field of electrical engineering or a related field. Experience: -Extensive experience measuring and testing RF systems using power and vector network analysers or other devices. -Proven experience in operating and troubleshooting complex electrical systems preferably in the high-power RF or high-voltage domain. -Experience with designing and modelling RF structures and components would be an asset. Technical competencies: -Design, construction and testing of RF power generation components and systems. -Operation and maintenance of RF components and systems. -Design and analysis of RF systems. -Knowledge and application of RF techniques. Behavioural competencies: -Managing Self: working well autonomously; taking on activities and tasks without prompting. -Learning and Sharing Knowledge: proposing ways to improve or streamline existing procedures, processes and methodologies. -Solving Problems: testing solutions for long-term suitability, cross-checking with all concerned before implementation. -Demonstrating Flexibility: being able to deal with ambiguous or unpredictable situations. -Working in Teams: building and maintaining constructive and effective work relationships; sharing and letting others participate in own work/project; encouraging team development. Language skills: Spoken and written English or French, with a commitment to learn the other language. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organisation. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 19.10.2025 at 23:59 CEST. Employment Conditions Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: -Participation in a regular stand-by duty, including nights, Sundays and official holidays. -Work in Radiation Areas. -Interventions in underground installations. -A valid driving licence. -Operations on electrical installations or in their vicinity (over 1000 Volt AC or 1500 Volt DC) requiring a specific authorisation. -Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction: Are you an experienced training specialist with a keen interest in Health, Safety and Environmental protection? Do you want to contribute to one of the world's most exciting scientific endeavours and make a lasting impact on the well-being of those who make it possible? Join CERN and play a key role in shaping the Safety culture at the heart of the largest particle physics research laboratory in the world. The Occupational Health & Safety and Environmental Protection (HSE) Unit is CERN's centre of competence in all matters of Safety. It supports the entire Organization in the implementation of CERN's Safety Policy. You will join the Safety Training (ST) section of the HSE Unit, which delivers mission-critical Safety training to all CERN contributors. Within this section, as part of a dynamic and dedicated team, you will be responsible for developing and implementing CERN's Safety training programmes. You will also support the Section Leader in overseeing daily operations and managing service providers. Functions: Contribute to the definition and implementation of the Safety training strategy, with the aim of fostering a strong Safety culture across the Organization. Lead the analysis of training needs, the definition of coherent training programmes, and the design of engaging training and communication materials. Drive continuous improvement by evaluating training effectiveness, optimising resources and integrating emerging trends and technologies into CERN's Safety training. Coordinate closely with Subject Matter Experts (SME), Safety Officers and the HR Learning & Development team to ensure training relevance and consistency. Supervise one team member (e-learning developer) and contribute to the administration and evolution of CERN's Learning Management System. Assist the Section Leader in overseeing daily operations of the service and in managing the performance of learning service providers (e.g. supervision of trainers). Qualifications Master's degree or equivalent relevant experience in the field of Learning & Development, Education Sciences, Communication, Occupational Safety or a related field. Experience: Mandatory: Proven experience in designing, developing, and implementing training activities; preferably in the Health, Safety and Environmental protection (HSE) domain. Proficiency in digital learning tools supporting the full learning lifecycle (e.g., Learning Management System, design and authoring tools, data collection and analysis tools). Experience in collaborating with multiple stakeholders in an international and multicultural work environment. Desirable: Experience in managing training-related projects or service contracts. Experience in team supervision and development. Experience in a technical and/or operational work environment. Experience as a trainer. Technical competencies: Learning & Development: ability to develop and implement effective training programmes, and manage digital learning tools. Organisation's culture shaping: knowledge of the principles and mechanisms to promote a strong Safety culture across a diverse organisation. Interactive media development: ability to design bespoke, engaging instructional and promotional materials. Organisation, planning and control: ability to organise activities, plan resources, coordinate projects and supervise work effectively. Customer service: ability to communicate effectively with stakeholders and provide a professional, responsive service. Behavioural competencies: Achieving Results: being rigorous and producing quality results at first attempt; having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind. Communicating Effectively: delivering presentations in a structured and clear way; adjusting style and content to the audience; responding calmly and confidently to questions; selecting the appropriate medium and forum to communicate. Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements; readily absorbing new techniques and working practices; proposing new or improved ways of working; readily accepting new tasks or work/projects. Working in Teams: gaining trust and collaboration from others; building and maintaining constructive and effective work relationships. Working in the Interest of the Organization: actively promoting safety and encouraging others to do the same; respecting safety rules and procedures; demonstrating an awareness of how CERN works. Language skills: Spoken and written English, with a commitment to learn French. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 15.10.2025 at 23:59 CEST.

At CERN, the European Organisation for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction Are you excited about advancing cutting-edge beam instrumentation? Join CERN and contribute to the development of state-of-the-art technologies for particle beam diagnostics, including for the Large Hadron Collider (LHC) during its High-Luminosity upgrade (HL-LHC). You will also play a role in forward-looking studies for the Future Circular Collider (FCC). You will join the Accelerator Systems Department (SY), which is responsible for the beam-related technical systems of the CERN accelerators. The SY teams design, build and operate equipment systems in all CERN accelerators, and are engaged in ambitious forward-looking R&D programmes. Within the Accelerator Systems Department, the Beam Instrumentation Group (SY-BI) is responsible for designing, building, and maintaining instruments that allow observation of particle beams and measurement of related parameters for all CERN accelerators, transfer lines, and secondary beam lines. This includes all systems designed and exploited to monitor transverse and longitudinal beam distributions for the LHC. Functions We are looking to recruit two professionals to join the Beam Instrumentation Group, each supporting a different team with unique technical challenges and exciting opportunities for innovation. One position will join the transverse Profile Monitoring (PM) section whereas the other position will join the Instrumentation for High-Precision and Ultra-Fast Measurements (IQ) section. Position for Beam Synchrotron Radiation and Transverse Diagnostics (PM Section): Lead the coordination and operation of Beam Synchrotron Radiation (BSR) systems, driving the full lifecycle across the LHC and HL-LHC, from preparation and commissioning to maintenance and future upgrades. Spearhead technical development of BSR diagnostics, including detector design and optical system optimisation. Lead R&D activities related to transverse beam diagnostics for the Future Circular Collider (FCC), developing innovative instrumentation for small and intense beams, often in collaboration with international partner institutes. Position for High-Resolution Longitudinal Diagnostics (IQ Section): Coordinate developments in high temporal resolution diagnostics of intra-bunch motion and longitudinal beam profiles, using primarily non-invasive techniques such as electro-optical devices, Synchrotron and Polarisation radiation. Lead R&D efforts for longitudinal diagnostics for the FCC, working closely with academic and research partners to develop next-generation solutions. For both positions: Provide scientific and technical support for the design, commissioning, and performance evaluation of other beam instrumentation systems (e.g., beam imaging systems, beam current monitors, and related diagnostics). Supervise and mentor undergraduate and graduate students contributing to the Group's projects. Qualifications Master's degree or PhD or equivalent relevant experience in the field of applied physics or engineering or a related field. Experience: Required experience: Solid background in accelerator physics, accelerator technologies, electromagnetism, and physical optics. Knowledge of particle and radiation interaction with matter, general beam instrumentation methodologies, and associated control/DAQ systems. Simulation, design, and development of optical systems, preferably related to transverse and longitudinal beam size measurements. Signal transmission via optical fibers. Desired experience: Experience with laboratory instruments such as optics measurement devices, oscilloscopes, multimeters, and network analyzers. Knowledge of electronics and its application to data acquisition systems. Technical competencies: Knowledge and application of electromagnetic radiation propagation and interaction with matter Knowledge and application of instrumentation and measurement techniques Simulation, design and development of optical systems: and laser-based systems. Testing and validation of detector, accelerator and beam line components. Simulation, design and development of beam instrumentation for particle accelerators. Behavioural competencies: Working in Teams: building and maintaining constructive and effective work relationships. Communicating Effectively: ensuring that information, procedures and decisions are appropriately documented. Achieving Results: delivering high quality work on time and fulfilling expectations. Managing Self: working well autonomously; taking on activities and tasks without prompting. Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements. Language skills: Spoken and written English, with a commitment to learn French. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organisation. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 19.10.2025 at 23:59 CEST. Employment Conditions Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: Interventions in underground installations. A valid driving licence. Work during nights, Sundays and official holidays, when required by the needs of the Organisation. Stand-by duty, when required by the needs of the Organisation. Job grade: 6-7 Job reference: SY-BI-2025-189-LD

At CERN, the European Organisation for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction From real-time C++ to modern GUIs, join CERN and turn cutting-edge physics into reliable software. You will join the Accelerator Systems Department (SY), which is responsible for the beam-related technical systems of the CERN accelerators. The SY teams design, build and operate equipment systems in all CERN accelerators, and are engaged in ambitious forward-looking R&D program. The position will be in the Software Section of the Beam Instrumentation Group, which is responsible for integrating bespoke acquisition and controls hardware into CERN's accelerator complex. The section's software solutions are essential for delivering essential data to hardware experts, physicists, and operators across all of CERN's accelerators. Functions As a Software Developer, you will play a key role in developing and maintaining the real-time software that interfaces with bespoke hardware, ensuring seamless synchronization with CERN's particle accelerators and user needs. Your work will directly contribute to advancing the precision and reliability of the world's most powerful scientific instruments. You will have access to training, mentoring, and learning opportunities to deepen your technical expertise. This position offers the opportunity to work on both new developments and the renovation of existing real-time systems during CERN's Long Shutdown 3 (LS3), a major upgrade phase of the accelerator complex. You will: Collaborate closely with experts and operators to gather and analyse requirements. Model beam instrumentation systems into CERN's control system using our in-house C++ framework (FESA). Design, implement, test, and commission new and upgraded real-time software systems. During LS3, you will contribute to large-scale modernisation efforts, including: Standardising hardware access code and system APIs. Adapting software to new accelerator timing distribution. Improving performance, maintainability, and reliability through careful redesign and refactoring. Placing a strong emphasis on robust testing and safe recommissioning. Develop intuitive tools and GUIs, primarily with our in-house PyQt framework, modernising existing Java Swing applications to enhance usability and efficiency. Qualifications Bachelor's degree or equivalent relevant experience in the field of computer science, software engineering or a related field. Experience: Demonstrated experience in the field of software engineering with an emphasis on developing deterministic software in a real-time environment using C++ . Basic knowledge of electronics-based digital acquisition hardware. Knowledge and experience of developing GUIs using PyQt, would be an advantage Technical competencies: Conceptualising, designing and developing user experiences and interfaces. Development of software for embedded and real-time systems with/without OS. Knowledge of programming techniques and languages. Re-use, refactoring, integration and porting of existing software. Testing, diagnosing and optimisation of software. Behavioural competencies: Achieving Results: delivering high quality work on time and fulfilling expectations. Working in Teams: building and maintaining constructive and effective work relationships; working well in groups and readily fitting into a team; participating fully and taking an active role in team activities. Demonstrating Flexibility: demonstrating openness to new ideas and situations; being willing to work on different projects simultaneously. Learning and Sharing Knowledge: thinking "out of the box" and proposing fresh ideas, insights and methodologies; learning from own successes and failures; sharing knowledge and expertise freely and willingly with others; coaching others to ensure knowledge transfer. Language skills: Spoken and written English or French, with a commitment to learn the other language. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organisation. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 12.10.2025 at 23:59 CEST. Employment Conditions Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: Work in Radiation Areas. Interventions in underground installations. Work during nights, Sundays and official holidays, when required by the needs of the Organisation. Job grade: 4-5 Job reference: SY-BI-SW-2025-190-LD

ompany Description At CERN, the European Organisation for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction Are you an enthusiastic engineer interested in advanced electromagnet technology and particle accelerators? At CERN, the most advanced electromagnets in the world are at the heart of every accelerator - and will play an important role in future developments. Come and join a great team pushing the limits of this technology. Take part! In the Magnets, Superconductors and Cryostats (MSC) group within CERN's Technology Department (TE), we design, build, and support the operation of all beam line magnets in the CERN accelerator complex, both normal and superconducting. The Magnetic Measurement and Modelling Section (MMM) develops cutting-edge tools for mathematical field modelling, computation, precision magnetic measurements and material characterization. As an Accelerator Magnet Modelling Engineer, you will advance, validate, and apply modelling tools and techniques to optimise the design and performance of CERN's accelerator magnets. Functions As an Accelerator Magnet Modelling Engineer you will: -Develop and validate analytical and numerical models and tools to represent magnetic fields in accelerator magnets and magnetic devices and analyse related measurement data, in collaboration with magnet designers and measurement experts; -Maintain, support and develop software applications and frameworks for the design of resistive and superconducting accelerator magnets, ensuring long-term usability and integration with CERN's engineering processes; -Develop and implement model-based methods and tools to improve the accuracy and consistency of magnetic field results obtained from complementary sources, such as mathematical models, multiple magnetic sensors and beam diagnostics; -Prepare technical documentation, reports and training material for modelling and analysis tools of accelerator magnets; -Contribute to the metrological characterisation of magnets and associated instrumentation, in view of validating the developed models. Qualifications Master's degree or PhD or equivalent relevant experience in the field of Electrical Engineering or a related field. Experience: Proven experience in the computer-assisted design and modelling of resistive or superconducting accelerator magnets or related electromechanical devices, using specialised numerical simulation tools. Experience in the following would be an asset: - Construction, testing or operation of electromagnets; - Magnetic measurement techniques, including integrating and analysing measurement data against numerical models. Technical competencies: -Knowledge and application of computational methods and tools in electromagnetism: such as FEM or BEM approaches applied to low-frequency magnetic problems; -Design and modelling of normal conducting magnets and permanent magnet systems; -Development of application software: related to electromagnetic simulation; -Measurement and analysis of magnets. Behavioural competencies: -Working in Teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities; -Managing Self: working well autonomously; taking on activities and tasks without prompting; -Demonstrating Accountability: working conscientiously and reliably; delivering on promises; -Learning and Sharing Knowledge: sharing knowledge and expertise freely and willingly with others; coaching others to ensure knowledge transfer; -Demonstrating Flexibility: being willing to work on different projects simultaneously. Language skills: Spoken and written English, with a commitment to learn French. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organisation. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 13.10.2026 at 23:59 CEST. Employment Conditions Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: Stand-by duty, when required by the needs of the Organisation. Operations on electrical installations or in their vicinity (over 1000 Volt AC or 1500 Volt DC) requiring a specific authorisation. Exposure to electromagnetic fields under certain exposure conditions Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed. Job grade: 6-7 Job reference: TE-MSC-MMM-2025-183-LD Benchmark Job Title: Electrical Engineer

Company Description At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction Are you a talented Software Engineer with a passion for low-level programming and Linux kernel development? Do you thrive on debugging complex systems and crafting robust, efficient drivers and kernel modules? Are you ready to shape the foundations of the control systems that drive CERN's world-class accelerator infrastructure? Join CERN's Controls Electronics and Mechatronics Group as a Linux Kernel Software Engineer and contribute to the development of the next generation of real-time, high-reliability systems for the HL-LHC (High Luminosity Large Hadron Collider) and future accelerator projects. Our team is driving and participates to several innovative projects, where your expertise as a software engineer will be vital: Frontend Computer Operating System (FECOS): a specifically tailored CERN Linux distribution for x86_64 and aarch64 architectures, tightly integrated with the control environment. Sensors Acquisition and Motion Control system (SAMbuCa): a flexible and modular low-level control solution for mechatronic devices. It combines custom electronics in PXIe and DI/OT platforms to drive the collimators in HL-LHC. White Rabbit (WR) is a CERN-born technology and now an industry standard providing sub-nanosecond synchronisation and deterministic data exchange across distributed Ethernet networks to hundreds of users around the world. Functions As a Linux System Engineer you will: Take responsibility in new software projects at the level of device drivers, libraries and C/C++ user space code. Maintain and evolve existing device drivers, including the re-programming of obsolete parts and the development of new ones as needed. Participate in the architecture, design and support of new systems based on VME, PCI/PCIe,, PXI/PXIe, uTCA and MPSoC platforms. Collaborate in a small team of developers, taking over tasks such as requirements gathering, planning, quality assurance, continuous integration, tooling, testing and communication with users. Participate in the operational support of the deployed Linux device drivers and low-level libraries. Clearly document and communicate your work. Necessary training will be provided where needed. Qualifications Master's degree or equivalent relevant experience in the field of Computing Engineering or a related field. Experience: Demonstrated experience in: Linux kernel, its configuration, software packaging, and basic system administration. Embedded real-time and UNIX/Linux systems programming. Low-level software development (Unix, C, C++), with a strong focus on Linux device driver development. CI/CD pipeline implementation, automated testing and tooling using Python and Bash scripting. The following would be an asset: Contributions to distributed Free/Open Source Software (FOSS) projects, with familiarity with the associated licensing models. Familiarity with contemporary hardware design practices - including FPGA, SoC, and microcontroller technologies - as well as experience with programmable logic design using Hardware Description Languages (HDLs). Technical competencies: Development of system software (drivers, system configuration and monitoring, etc.). Development of software for embedded and real-time systems with/without OS. Knowledge of programming techniques and languages. Knowledge and application of software life-cycle tools and procedures. Knowledge of operating systems and knowledge of system configuration tools. Behavioural competencies: Achieving Results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind. Working in Teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities. Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements. Learning and Sharing Knowledge: keeping up-to-date with developments in own field of expertise and readily absorbing new information; sharing knowledge and expertise freely and willingly with others; coaching others to ensure knowledge transfer. Solving Problems: adopting a pragmatic approach; understanding the value of adopting generic rather than "gold -plated" technical solutions Identifying, defining and assessing problems, taking action to address them. Language skills: Spoken and written English, with a commitment to learn French. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 14.10.2025 at 23:59 CEST. Employment Conditions Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: A valid driving licence. Work during nights, Sundays and official holidays, when required by the needs of the Organization. Stand-by duty, when required by the needs of the Organization. (For the intro)You will join: The BE Department, responsible for the beam generation, acceleration, diagnostics, controls and performance optimisation for the LHC and its injector accelerators. The CEM Group, responsible for the development and maintenance of controls hardware and low-level software, electronics design, production and radiation tolerance, mechatronics and robotics, test and measurement systems. The IN Section, responsible for the specification, procurement, development and support of Frontend embedded systems and Fieldbus infrastructure for accelerator control and data acquisition.

Company Description At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Job Description Introduction: Are you a hands-on technician with proven experience in scaffolding and mechanical coordination? Do you thrive in a collaborative, fast-paced environment where engineers and technicians from multiple fields work together to achieve extraordinary goals? If so, this is your opportunity to contribute directly to some of the world's most fascinating scientific operations. As Technical Responsible for Scaffolding Services and Activity Coordinator, you will be responsible for a major scaffolding service contract and coordinate technical interventions in the Antiproton Decelerator (AD) complex. Your mission: To ensure maintenance and installation activities are carried out safely, efficiently, and in line with CERN's strict operational standards. You will be part of the Design and Coordination (DC) Section, within the Experimental Areas (EA) Group of the Beams Department (BE). This section is dedicated to enabling cutting-edge physics research by guaranteeing safe access and smooth installation work across CERN's experimental facilities. This goes beyond a coordination role: As an experimental area coordinator this is a chance to work side by side with world-leading scientists and engineers, making a tangible impact on the future of physics. From overseeing technical interventions to managing service contracts, your contribution will help keep CERN's unique facilities running safely and reliably at the forefront of discovery. Functions: Gather scaffolding user requirements, evaluate potential solutions, and provide expert advice on the most appropriate options, ensuring that all structures comply with CERN's safety regulations in collaboration with safety officers when needed. Act as the main scaffolding technical interface for users, contributing to the selection and validation of technical solutions (including specifications, designs and alternatives). Coordinate a small team working closely with the scaffolding service provider. Supervise, and follow up on installation, maintenance, and upgrade activities in beamlines and installations as an experimental area coordinator. When required, actively participate in hands-on installation, maintenance, and adjustment of beamlines under the responsibility of the Experimental Areas Group, including interventions on LHC forward detectors. Ensure all necessary safety measures are implemented and in place during on-site activities. Qualifications Higher technical diploma or equivalent relevant experience in the field of Mechanical engineering, or a related field. (French equivalent: diplôme de technicien supérieur) or a related field. SFECE certification (French Scaffolding and Formwork Association) or equivalent would be an asset. Experience: Coordinating on-site work activities with various external contractors. Inspecting multidirectional scaffolding in compliance with safety standards. Managing the technical aspects of a service contract. Installing scaffolding in complex, delicate, and sensitive environments. Creating and reviewing models using 3D CAD software. Inspection of fixed and mobile scaffolding structures. Coordination and safety aspects in the context of Works and Services Supervision (WSS). Knowledge of the following fields will be considered an asset: GANTT (Microsoft Project®). CATIA® 3D CAD software. Training in scaffolding and/or 3D CAD software will be provided when necessary. Technical competencies: Safety conformity assessment. Knowledge of personal protective equipment. Specification and follow-up of technical aspects of a contract. Integration of mechanical systems. Assembly of mechanical structures and equipment. Behavioural competencies: Working in Teams: building and maintaining constructive and effective work relationships. Managing Self: working well autonomously; taking on activities and tasks without prompting; taking initiative beyond regular tasks and making things happen. Demonstrating Flexibility: being willing to work on different projects simultaneously. Solving Problems: producing workable and timely solutions that meet requirements. Communicating Effectively: ensuring that information, procedures and decisions are appropriately documented. Language skills: Spoken and written English or French, with a commitment to learn the other language. Additional Information Eligibility and closing date: Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States. This vacancy will be filled as soon as possible, and applications should normally reach us no later than 13.10.2025 at 23:59 CEST. Employment Conditions: Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position. Working Hours: 40 hours per week This position involves: Work in Radiation Areas. Interventions in underground installations. A valid driving licence. Work during nights, Sundays and official holidays, when required by the needs of the Organization. Exposure to risk of falling from heights during scaffolding assembly and dismantling operations. Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed. Job grade: 3-4 Job reference: BE-EA-DC-2025-185-LD