Applied Physicist

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

• It is located 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 from around the world, representing more than 100 nationalities. The organization operates in multiple countries and is dedicated to pushing the frontiers of science and technology, fostering an environment of innovation and collaboration.

Job Overview:
In this role, you will contribute significantly to the development and evolution of advanced physics analysis tools specifically designed for the Future Circular Collider (FCC) project. As a member of the EP-FCC physics software team, you will take on the responsibility for key software components that enable large-scale, distributed detector performance and physics analysis studies. Your work will be crucial in supporting the evaluation of the FCC's physics potential and optimizing detector designs, working closely with the international FCC community. This position requires a strong commitment to collaboration and innovation, as you will be enhancing the capabilities of the FCCAnalyses framework and integrating it into various computing solutions.

Duties and Responsibilities:
Your primary responsibilities will include extending the capabilities of the FCCAnalyses framework, which is based on ROOT RDataFrame, to support multiple distributed computing solutions. You will also contribute to the development and maintenance of core FCCAnalyses components and ensure their integration into iLCDirac. Supporting large-scale detector performance and physics analysis studies in a distributed computing environment will be a key part of your role. Additionally, you will enhance, maintain, and support the integration of FCCAnalyses with web-based analysis platforms. Close collaboration with the Key4hep and ROOT development teams will be essential to ensure software coherence and sustainability. Furthermore, you will be responsible for producing clear and detailed technical documentation to facilitate the efficient adoption of the analysis tools by the wider FCC community.

Required Qualifications:
To qualify for this position, you must be a national of a CERN Member or Associate Member State. A professional background in Experimental Particle Physics or a related field is essential. You should possess 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. It is important to note that candidates who have previously held a CERN fellow or graduate contract are not eligible for this position.

Educational Background:
The educational background required for this position includes a Master's degree or a PhD in Experimental Particle Physics or a closely related field. This academic foundation is crucial as it provides the necessary theoretical and practical knowledge required to excel in the role and contribute effectively to the FCC project.

Experience:
Candidates should have experience with High Energy Physics (HEP) data analysis, specifically in programming languages such as C++ or Python. Familiarity with Linux systems administration and regular usage of distributed computing resources is also required. Additionally, a good understanding of current web technologies will be beneficial for this role.

Languages:
Proficiency in spoken and written English is mandatory, as it is the primary language of communication at CERN. A commitment to learning French is also expected, as it will enhance your ability to collaborate within the diverse CERN community.

Additional Notes:
This position is fully onsite and requires a commitment of 40 hours per week. The contract duration is initially set for 24 months, with the possibility of extension up to a maximum of 36 months. The job may involve working during nights, Sundays, and official holidays, depending on the needs of the organization. The job reference for this position is EP-FCC-2025-261-GRAP. The compensation includes a monthly stipend ranging from 6287 to 6911 Swiss Francs, which is tax-free, along with 30 days of paid leave per year and additional benefits such as comprehensive health insurance, family allowances, and a relocation package.