Theoretical Physicist

Theoretical Physicist

Geneva, Switzerland TH-SP-2026-68-LD Ideal start date: TBD

Before 31/12/2026 at 23:59 (Geneva Time)

What you'll do

You will join the talent pool for Limited Duration research positions within the CERN Theoretical Physics Department (CERN-TH), bringing together candidates for future hiring opportunities based on organisational needs. As an outstanding researcher in theoretical particle physics, you will contribute to the development of new theoretical ideas aimed at understanding the fundamental constituents and forces of nature, while ensuring their relevance to CERN’s experimental programme and taking full advantage of the unique environment of a large international laboratory. You will also contribute to CERN’s scientific culture through active participation in training programmes and the promotion of scientific events on site.

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Your responsibilities

• Making significant contributions to theoretical research related to elementary particle physics;
• Participating in and initiating a large variety of activities within the Theoretical Physics Department and possibly in collaboration with the experimental physicists working at CERN;
• Taking part in CERN committees and study groups;
• Helping maintain continued contacts with the outside scientific community.

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Your profile

• Demonstrated post-doctoral research activities which have led to scientific publications in peer-reviewed journals.
• Evidence of ability to make significant contributions to the work of the Organization.
• PhD or equivalent relevant experience in the field of Theoretical Physics or a related field.

Your skills

• Knowledge and application of computational and mathematical physics:
• Knowledge and application of particle physics, phenomenology:
• Thorough knowledge of theoretical physics.
• Delivers high quality work on time and fulfils expectations.
• Identifies, defines and assesses problems, takes action to address them.
• Understands how individual differences bring added value to the Organization; promotes complementarities.
• Assures alignment to overall strategy when revising unit goals and priorities in the event of changing circumstances.
• Spoken and written English or French, with a commitment to learn the other language.

Ideal start date: TBD

Contract duration (in months): 60

Grade range: 6

Benchmark job: 100030 - Theoretical Physicist

Job flexibility: Fully Onsite

Global Benefits at CERN

• A minimum net entry-salary of 9236 Swiss Francs per month, increasing in line with your years of relevant experience.
• 30 days of paid leave per year plus 2 weeks annual closure.
• Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Family, child and infant monthly allowances depending on your individual circumstances.
• A relocation package (installation grant, removal, travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

Let's get you ready

Be sure to meet the eligibility criteria

• You have relevant qualifications and professional experience.
• If you have previously held a Staff contract at CERN, you will not be eligible for these positions.
• Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

• Your CV (English or French)
• Any document you consider relevant to your application

Your CERNDepartment

The TH department is a center of excellence in theoretical high-energy physics, supporting CERN's experimental programme and fostering global collaboration and education in fundamental research areas.

Overview of CERN

Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

Ready To apply?

Be prepared with our resources and tips

• Our Hiring Process
• Life at CERN
• Tips for your Application
• Working at CERN
• What happens after you apply?
• More about CERN

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Still have a doubt ? Here are the most frequently asked questions

• What should I expect during my first week at CERN? Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
• How big would the team be? The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
• What is the working language at CERN? The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
• What support does CERN provide for relocation? CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
• Do I need a visa to work at CERN? Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
• What would my salary be? Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.