Junior Mechanical Technician

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

• It is headquartered in Geneva, Switzerland, and is known for its groundbreaking work in particle physics. CERN employs over 2,500 staff members and collaborates with thousands of scientists and engineers from around the world. The organization operates in multiple countries, with its member states spanning across Europe and beyond. CERN's mission is to push the frontiers of science and technology, fostering an environment of innovation and collaboration among a diverse range of professionals.

Job Overview:
The Junior Mechanical Technician position within the EP-ATL-PO section is crucial for the upgrade and maintenance of the ATLAS detector at the Large Hadron Collider (LHC). This role is designed for individuals who are eager to gain hands-on experience in a cutting-edge experimental physics environment. The successful candidate will support experienced colleagues in various mechanical installation and integration activities during Long Shutdown 3 (LS3). This position offers a unique opportunity to work on large-scale detector movements and installations, providing logistical support and ensuring that all activities are conducted safely and efficiently. The role requires a commitment to learning and adapting to the fast-paced and dynamic environment of CERN, where teamwork and communication are essential for success.

Duties and Responsibilities:
The Junior Mechanical Technician will be responsible for participating in large-scale movements of the ATLAS detector within the experimental cavern and assisting in the installation of access platforms. Key responsibilities include supporting sub-detector installation activities, which involve handling, transporting, and positioning components using appropriate lifting and alignment techniques. The technician will prepare and set up work areas and tooling, providing logistical support for detector interventions. Additionally, the role requires reading and interpreting mechanical drawings, performing basic dimensional checks, and reporting progress to supervising engineers. When necessary, the technician will manufacture parts and tooling using conventional machining techniques such as drilling, milling, and turning, ensuring that all work adheres to safety and quality standards.

Required Qualifications:
Candidates must possess initial hands-on experience in mechanical assembly, fitting, or maintenance. They should be able to read and interpret mechanical drawings, blueprints, and 2D/3D CAD models. Familiarity with conventional machining techniques and workshop practices is essential, along with basic metrology skills, including the use of calipers, gauges, and dimensional inspection tools. An awareness of occupational health and safety principles in workshop and industrial environments is also required. The ideal candidate will demonstrate strong teamwork and communication skills, with the ability to collaborate effectively in an international and multidisciplinary environment. A rigorous, detail-oriented, and safety-conscious approach to work is crucial, as is the ability to accurately document completed work and maintain high-quality standards while following technical procedures and safety requirements.

Educational Background:
The minimum educational requirement for this position is a general secondary education diploma. Candidates must be nationals of a CERN Member or Associate Member State and should have a maximum of two years of professional experience since graduation in Mechanical Engineering or a related field. It is important to note that applicants with a Bachelor's, Master's, or PhD degree are not eligible for this position.

Experience:
The position requires candidates to have a maximum of two years of professional experience in a relevant field since graduation. This experience should ideally be in mechanical engineering or a closely related discipline, providing the foundational skills necessary for the role. Candidates should demonstrate a willingness to learn and adapt to the specific requirements of the position, as well as the ability to work effectively within a team.

Languages:
Proficiency in spoken and written English or French is mandatory, with a commitment to learning the basics of the other language. This bilingual requirement reflects the international nature of CERN and the diverse backgrounds of its workforce, ensuring effective communication across teams.

Additional Notes:
The contract duration for this position is 24 months, with the possibility of extension up to a maximum of 36 months. The working hours are set at 40 hours per week, and the position is fully onsite. The target start date for this role is November 1, 202

• Candidates should be prepared for work in radiation areas and interventions in underground installations. A valid driving license is required, and the role may involve working during nights, Sundays, and official holidays as needed. Due to the occupational health risks associated with this position, selected candidates must obtain medical clearance before a contract offer is confirmed. The job reference for this position is EP-ATL-PO-2026-178-GRAE. The compensation includes a monthly stipend of 4687 Swiss Francs (tax-free), 30 days of paid leave per year plus 2 weeks of annual closure, comprehensive health insurance coverage, and a relocation package depending on individual circumstances. On-the-job and formal training, including language classes, will also be provided.