Applied Physicist

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

• It is headquartered in Geneva, Switzerland, and is known for its groundbreaking work in particle physics. CERN employs thousands of scientists, engineers, and support staff from over 100 countries, making it a hub for international collaboration in scientific research. The organization operates the world's largest particle physics laboratory and is home to the Large Hadron Collider, among other advanced scientific instruments. CERN's mission is to uncover the fundamental structure of the universe and to advance knowledge in the field of physics through innovative research and technology.

Job Overview:
The position of Applied Physicist within the Computational Accelerator Physics section (BE-ABP-CAP) at CERN involves the development and maintenance of software tools essential for accelerator design and beam-dynamics simulation. The role requires collaboration with various stakeholders to ensure the consistency and interoperability of accelerator model repositories. The successful candidate will be responsible for creating new computational methods that model physical phenomena relevant to future collider designs, such as the FCC-ee. This position offers a unique opportunity to work at the intersection of accelerator physics, scientific software development, and large-scale simulation, contributing to the design of next-generation accelerators at CERN.

Duties and Responsibilities:
The Applied Physicist will participate in the development and evolution of CERN's software stack for accelerator design and beam dynamics simulation. Key responsibilities include:

• Developing numerical methods and software solutions for modeling physical phenomena relevant to the FCC-ee design.
• Building and maintaining accelerator models of current and future machines within the CERN accelerator complex for use in simulation studies and design optimization.
• Collaborating with users and maintainers of accelerator model repositories to ensure consistency, integration, and efficient sharing of resources.
• Engaging in multidisciplinary teamwork to foster innovation and enhance the capabilities of the software ecosystem.

Required Qualifications:
Candidates must be nationals of a CERN Member or Associate Member State and possess a professional background in Applied Physics or a related field. The ideal candidate should have either a Master's degree with 2 to 6 years of post-graduation professional experience or a PhD with no more than 3 years of post-graduation professional experience. Additionally, candidates should not have previously held a CERN fellow or graduate contract.

Educational Background:
A Master's degree in Applied Physics or a related field is required, with a preference for candidates who have a PhD. The educational background should include a strong foundation in physics, particularly in areas relevant to accelerator physics and computational methods.

Experience:
Candidates should have experience in Accelerator Physics and software development within a scientific computing context. Experience in developing computational physics simulation software following best practices is considered an asset. The ability to work collaboratively in a multidisciplinary and international team environment is essential.

Languages:
Fluency in spoken and written English is mandatory, with a commitment to learn French being advantageous. Proficiency in additional languages may also be beneficial but is not required.

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 at CERN in Geneva. The target start date for this role is 01-March-202

• The job reference for this position is BE-ABP-CAP-2025-217-GRAP. The compensation includes a monthly stipend ranging from 6287 to 6911 Swiss Francs (net of tax), comprehensive health coverage for the employee and their family, and various allowances depending on individual circumstances. Employees are entitled to 30 days of paid leave per year and will have access to on-the-job and formal training opportunities, as well as in-house language courses.