Mechanical Engineer

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

• It is headquartered in Geneva, Switzerland, and is known for its groundbreaking work in particle physics. CERN operates the world's largest and most complex scientific instruments, including the Large Hadron Collider (LHC), to study the fundamental constituents of matter. The organization employs thousands of scientists, engineers, and support staff from over 100 countries, fostering a collaborative environment that encourages innovation and diversity. CERN's mission is to push the frontiers of science and technology, contributing to our understanding of the universe and the fundamental laws of nature.

Job Overview:
The Mechanical Engineer position at CERN involves joining the CMS experiment Engineering & Integration team, focusing on the upgrade of the detector for the High-Luminosity Large Hadron Collider (HL-LHC). The role encompasses the construction and commissioning of a new detector environmental monitoring system and the integration of the Machine Detector Interface. The successful candidate will participate in the design, construction, and installation of new detectors and their infrastructure, contributing to the integration and commissioning of these detectors. This position requires collaboration within the technical coordination-team" style="border-bottom: 1px dotted #007bff !important;">coordination team on CMS experiment upgrades, leading efforts in the integration, construction, and commissioning of the CMS environmental monitoring system, and ensuring the integration of various accelerator elements in the detector's forward region. The role also involves writing technical specifications for procurement and presenting work through technical reports and talks at conferences and workshops.

Duties and Responsibilities:
The duties and responsibilities of the Mechanical Engineer include:

• Participating in the design, construction, and installation of new detectors and their associated infrastructure.
• Contributing to the integration and commissioning of detectors within the CMS experiment.
• Collaborating with the technical coordination team on upgrades for the HL-LHC.
• Leading the integration, construction, and commissioning of the CMS environmental monitoring system.
• Taking charge of integrating various accelerator elements in the detector's forward region, including the beampipe vacuum pumping system and radiation shielding.
• Writing technical specifications for the procurement of goods related to the CMS detector upgrade.
• Presenting findings and progress to the CMS Collaboration through technical reports and presentations at relevant conferences and workshops.

Required Qualifications:
Candidates must possess a Master's Degree or equivalent relevant experience in Mechanical Engineering or a related field. They should demonstrate experience in the geometrical and functional integration of complex systems, utilizing a multidisciplinary approach. Proven skills in designing mechanical assemblies using 3D CAD tools (preferably CATIA) and performing thermal and structural calculations of complex mechanical structures using FEA methods (preferably Ansys) are essential. A strong background in writing technical specifications and managing supplies is required, along with experience in planning and coordinating field activities. Initial experience in designing and building PLC-based data acquisition and control systems, preferably using Siemens hardware, is also necessary.

Educational Background:
The educational background required for this position includes a Master's Degree in Mechanical Engineering or a closely related field. Equivalent relevant experience may also be considered. Candidates should have a solid foundation in mechanical engineering principles, particularly as they relate to complex systems integration and design.

Experience:
The position requires demonstrated experience in the geometrical and functional integration of complex systems, with a strong emphasis on a multidisciplinary approach. Candidates should have a proven ability to design mechanical assemblies using 3D CAD tools and perform thermal and structural calculations of complex mechanical structures. Experience in planning and coordinating activities on the field is also essential, along with initial experience in designing and building PLC-based data acquisition and control systems.

Languages:
Fluency in spoken and written English or French is mandatory, with a commitment to learn the other language being highly desirable. This bilingual requirement ensures effective communication within the diverse international team at CERN.

Additional Notes:
This position is a limited duration contract for 5 years, with the possibility of extension up to 8 years and eligibility for an indefinite contract tenure. The job involves working 40 hours per week, fully onsite, and includes responsibilities in radiation areas and underground installations. A valid driving license is required, and the selected candidate must obtain medical clearance due to occupational health risks associated with the position. The job grade is classified as 6-7, and the reference for this position is EP-CMS-SSI-2026-86-LD. CERN offers a competitive salary that is tax-free, increasing with relevant experience, along with 30 days of paid leave per year, comprehensive health insurance, family allowances, and a relocation package depending on individual circumstances.