Theoretical Physicist - European Organization for Nuclear Research (Geneva)

About this position

The summary below is published by European Organization for Nuclear Research on the official vacancy notice. Our own analysis — salary realism, comparable openings, career trajectory, language profile — follows further down the page.

Key responsibilities

According to the vacancy notice, the role centres on the following duties:

• Making significant contributions to theoretical research related to elementary particle physics
• Participating in and initiating activities within the Theoretical Physics Department and in collaboration with experimental physicists
• Taking part in CERN committees and study groups
• Helping maintain continued contacts with the outside scientific community
• Contributing to CERN's scientific culture through active participation in training programmes and promotion of scientific events

Are you eligible?

Check these requirements from the notice before investing time in an application:

• Education: PhD or equivalent relevant experience in the field of Theoretical Physics or a related field
• Experience: 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
• Languages: English (spoken…), French (spoken…)
• Key skills: Knowledge and application of computational and mathematical physics, Knowledge and application of particle physics, phenomenology, Thorough knowledge of theoretical physics, Achieving results: delivering high quality work on time and fulfilling expectations, Solving problems: identifying, defining and assessing problems, taking action to address them, Building relationships: understanding how individual differences bring added value to the Organization; promoting complementarities, Creating vision and strategic Partnerships: ensuring alignment to overall strategy when revising unit goals and priorities

Contract and working arrangements

Contract duration: 5 years, with possibility to extend up to 8 years and eligibility for indefinite contract tenure.

Working arrangements: Fully Onsite.

Hiring unit: Theoretical Physics Department (CERN-TH).

Position details

Reference

TH-SP-2026-68-LD

Last Verified

23 July 2026

Position overview

This is the official EU Careers listing for Theoretical Physicist at CERN based in Geneva (Contract Agent). The vacancy reference is TH-SP-2026-68-LD. The role falls under the Research domain.

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on http://home.cern.

Introduction

You will join the talent pool for Limited Duration research positions within the CERN Theoretical Physics Department (CERN-TH), bringing together pre-assessed and endorsed 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.

Functions

* 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.

PhD or equivalent relevant experience in the field of Theoretical Physics or a related field.

Experience:

* 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.

Technical competencies:

* Knowledge and application of computational and mathematical physics * Knowledge and application of particle physics, phenomenology * Thorough knowledge of theoretical physics.

Behavioural competencies:

* Achieving results: delivering high quality work on time and fulfilling expectations. * Solving problems: identifying, defining and assessing problems, taking action to address them. * Building relationships: understanding how individual differences bring added value to the Organization; promoting complementarities. * Creating vision and strategic Partnerships: ensuring alignment to overall strategy when revising unit goals and priorities in the event of changing circumstances.

Language skills: Spoken and written English or French, with a commitment to learn the other language.

Eligibility and closing date:

[Diversity](https://diversity.web.cern.ch/) has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success.

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

Working Hours: 40 hours per week

Job Flexibility: Fully Onsite

Job grade: 6-7

Job reference: TH-SP-2026-68-LD

Field of work: Theoretical Physics

Benchmark Job Title: Theoretical Physicist

Global Benefits

* A [competitive salary](https://careers.cern/pay-benefits-and-support/)(tax free), 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.

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!

More information about us, here:[careers.cern](https://careers.cern/)

Application timeline

This vacancy was first listed on 28 May 2026, 55 days ago.

No closing date is published in the source feed for this position. EU vacancies typically remain open for four to eight weeks; check the official vacancy notice for the cut-off date and time.

Last verified against the EU Careers feed on 23 July 2026.

Where to learn more

For headcount, mission, and other open vacancies at CERN see the CERN institution page; for the cost of living, correction coefficient, and other postings in Geneva see our Geneva location page; for related vacancies in the Research field browse our Research domain page.

New to EU careers? Our beginner's guide walks through entry routes, EPSO competitions, and what to prepare. For application logistics see application tips and EPSO competitions.