Mechanical Engineer

Job Posting Organization:
CERN, the European Organisation for Nuclear Research, is a leading scientific research organization established in 195

• It is headquartered in Geneva, Switzerland, and employs over 2,500 staff members, along with thousands of scientists and engineers from around the world. CERN's mission is to explore the fundamental structure of the universe by using the world's largest and most complex scientific instruments to study the basic constituents of matter. The organization operates in multiple countries, collaborating with various international institutions to advance knowledge in the field of particle physics.

Job Overview:
The position of Mechanical Engineer at CERN's Experimental Physics (EP) Department is designed for individuals who are experienced and hands-on in mechanical engineering, particularly in the context of cutting-edge technologies and precision assemblies. The successful candidate will be involved in the development and construction of the next generation of particle detectors, specifically focusing on the ATLAS Inner Tracker (ITk) project. This role requires collaboration with the CERN ATLAS Team, which plays a crucial role in constructing the Pixel Outer Barrel of the ITk. The engineer will be responsible for the conception, design, prototyping, and assembly of support structures and tooling, as well as the integration, installation, and testing of the final detector. This position offers a unique opportunity to contribute to groundbreaking research in particle physics and to work with advanced engineering practices in a dynamic and collaborative environment.

Duties and Responsibilities:
As a Mechanical Engineer in the CERN ATLAS Detector Team, the candidate will undertake a variety of responsibilities, including:

• Participating in the conception and detailed design of detector components, tooling, and quality control infrastructure for the ITk Pixel Outer Barrel.
• Verifying the design of components and tooling according to relevant standards and best engineering practices, performing both analytical and numerical calculations.
• Developing, documenting, and implementing tools and procedures for the assembly, installation, testing, and repair of detector components, sub-assemblies, and services.
• Engaging in hands-on detector integration work in Building 154 and the ATLAS SR1 cleanroom, supporting assembly, testing, and installation activities.
• Preparing technical specifications for detector components and tools, and overseeing their production, acceptance, and installation.
• Collaborating with team members and other departments to ensure successful project outcomes and adherence to timelines.

Required Qualifications:
Candidates must possess a Master's degree or equivalent relevant experience in mechanical or aerospace engineering or a related field. Additionally, they should have proven experience in the design of precision mechanical components and assembly tools for complex systems. Previous work experience with particle detectors is advantageous. Candidates should demonstrate proficiency in CAD software for 3D modeling and management of large assemblies, with a preference for Catia V

• Experience in producing 2D technical drawings according to relevant standards for dimensioning and tolerances (e.g., ISO Geometrical Product Specifications) is also required. Hands-on experience in the construction and testing of mechanical systems, particularly in clean room environments, is a significant asset.

Educational Background:
The educational background required for this position includes a Master's degree in mechanical engineering, aerospace engineering, or a closely related field. Candidates with equivalent relevant experience may also be considered. The educational qualifications should provide a solid foundation in engineering principles, design methodologies, and technical competencies necessary for the role.

Experience:
The ideal candidate should have substantial experience in the design and assembly of precision mechanical components and tools for complex systems. This includes demonstrated hands-on experience in the construction and testing of mechanical systems, particularly in environments that require high precision and cleanliness, such as clean rooms. Experience with particle detectors and familiarity with analytical methods and commercial FEA software (e.g., Ansys) for structural and dynamic analysis are also highly valued. Candidates should have a proven track record of working on complex engineering projects and collaborating effectively within multidisciplinary teams.

Languages:
Fluency in spoken and written English is mandatory for this position, as it is the working language at CERN. Additionally, candidates should have a commitment to learning French, which is beneficial for integration into the local community and workplace.

Additional Notes:
This position is offered as a limited duration contract for 5 years, with the possibility of applying for an indefinite position subject to certain conditions. The working hours are set at 40 hours per week, and the job requires full onsite presence. The role involves working in radiation areas and may include interventions in underground installations. A valid driving license is required, and candidates should be prepared for shift work, including nights, Sundays, and official holidays, as necessitated by the organization's needs. The job grade for this position is classified as 6-7, and the reference for this job is EP-ADE-TK-2025-221-LD, with a focus on mechanical engineering.