Applied Physicist

Applied Physicist

European Organization for Nuclear Research (CERN)

December 6, 2025January 20, 2026GenevaSwitzerland
Job Description
Job Posting Organization:
CERN, the European Organization for Nuclear Research, was established in 1954 and is one of the world's largest and most respected centers for scientific research. With a mission to probe the fundamental structure of the universe, CERN employs thousands of scientists, engineers, and support staff from over 100 countries. The organization operates in multiple countries and is known for its groundbreaking work in particle physics, utilizing the world's largest and most complex scientific instruments to study fundamental particles and their interactions. CERN's commitment to diversity and inclusion is a core value, ensuring a collaborative and innovative work environment.

Job Overview:
The position of Applied Physicist at CERN involves working within a team of physicists and engineers dedicated to the development of detector concepts for the Future Circular Collider (FCC-ee) physics program. The successful candidate will be tasked with developing simulation software that models the performance of Monolithic Active Pixel Sensors (MAPS), which are integral to the vertex detectors of various detector concepts. This role not only requires technical expertise in simulation and modeling but also offers the opportunity to contribute to the innovative development of a novel Tracker concept based entirely on MAPS technology. The candidate will engage in evaluating and optimizing the performance of a full-MAPS Tracker concept and may also assist in the evaluation of MAPS prototypes, making this a pivotal role in advancing particle physics research.

Duties and Responsibilities:
The primary duties and responsibilities for the Applied Physicist position include:
  • Developing a comprehensive simulation of the MAPS response, which encompasses various sensor design options and readout parameters.
  • Evaluating and optimizing the performance of a full-MAPS Tracker concept to ensure its efficacy in experimental applications.
  • Contributing to the assessment of MAPS prototypes, providing insights and recommendations based on simulation results.
  • Collaborating with a multidisciplinary team of physicists and engineers to integrate simulation findings into the broader context of detector development.
  • Engaging in continuous learning and professional development to stay abreast of advancements in experimental particle physics and related technologies.

Required Qualifications:
Candidates must possess a solid background in experimental particle physics, with experience in the development of reconstruction software and data analysis. Knowledge of silicon detector technologies is essential, and familiarity with Monolithic Active Pixel Sensors (MAPS) is considered an asset. Strong programming skills are required, particularly proficiency in Python and C++. Additionally, candidates must demonstrate a commitment to learning French, as effective communication in both spoken and written English is mandatory.

Educational Background:
The ideal candidate will have a professional background in Experimental Particle Physics or a related field. Educational qualifications include either a Master's degree accompanied by 2 to 6 years of post-graduation professional experience or a PhD with no more than 3 years of post-graduation professional experience. It is important that candidates have not previously held a CERN fellow or graduate contract.

Experience:
Candidates should have a minimum of 2 years of relevant professional experience post-graduation if holding a Master's degree, or up to 3 years if they possess a PhD. This experience should be directly related to experimental particle physics or a closely associated field, demonstrating a solid understanding of the principles and practices involved in this area of research.

Languages:
Proficiency in spoken and written English is mandatory for this position. Additionally, candidates are expected to have a commitment to learning French, which will enhance their ability to communicate effectively within the CERN community and contribute to a collaborative work environment.

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 job offers a hybrid working model. The target start date for this position is March 1, 202
  • The role involves working in radiation areas, and candidates must meet eligibility criteria, including being a national of a CERN Member or Associate Member State. 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 CERN provides opportunities for on-the-job training, formal training, and in-house language courses.
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