Two Postdoctoral Positions in Theoretical Particle Physics and Cosmology

Position Description

Two Postdoctoral Positions in Theoretical Particle Physics and Cosmology

University of Basel, Switzerland

The Theoretical Particle Physics and Cosmology group led by Prof. Admir Greljo at the University of Basel invites applications for two postdoctoral research positions starting in Fall 2027. The starting date is flexible.

Our group studies fundamental physics beyond the Standard Model, with an emphasis on connecting theoretical ideas to experimental and cosmological probes. Our research is organized around three closely connected directions:

• Flavor as an organizing principle beyond the Standard Model: the origin of fermion masses and mixings, flavor symmetries, BSM model building, and their implications for flavor, CP and collider observables.
• Precision probes at present and future experiments: effective field theory and SMEFT, electroweak and flavor precision physics, collider phenomenology, and opportunities at the LHC, FCC-ee and high-intensity experiments.
• Particle cosmology as a probe of fundamental interactions: dark matter and dark sectors, axions and ALPs, baryogenesis and leptogenesis, dark energy, cosmological phase transitions and gravitational waves.

We welcome applications from outstanding researchers whose interests overlap with one or more of these directions. Expertise across all three is neither expected nor required. Applicants bringing complementary expertise or proposing new directions connected to the broader scientific program of the group are particularly encouraged.

Successful candidates will join a growing and collaborative group of postdoctoral researchers and PhD students. They will have substantial freedom to develop their own research program, initiate new collaborations, and pursue both independent and joint projects. The positions are supported by the Swiss National Science Foundation project Probing the Origin of Flavor with Colliders and Gravitational Waves. The group also participates in CHEF – Swiss High Energy Physics for the FCC, providing opportunities for interaction across the Swiss particle-physics community and with CERN.

The appointments are initially for two years, with the possibility of extension for a third year subject to satisfactory performance and availability of funding. The University of Basel offers internationally competitive salaries and social benefits according to university regulations. Generous travel budget is available.

Applicants should hold, or expect to obtain, a PhD in theoretical particle physics, cosmology, or a closely related field by the starting date.

Applications should be submitted through AcademicJobsOnline and include a curriculum vitae, publication list, a brief research statement, and three letters of recommendation.

Application deadline: December 30, 2026.

For further information about the group and its research, please consult the group website. Informal inquiries may be addressed to admir.greljo@unibas.ch.

The University of Basel is committed to equal opportunities and a diverse and inclusive academic environment. Applications from women and members of groups underrepresented in academic research are particularly encouraged.