Three-year postdoctoral appointments beginning in autumn 2027 support self-directed theoretical physics research. Topics include collider phenomenology, dark matter, lattice QCD, neutrinos, cosmology, quantum algorithms and quantum sensing. Researchers collaborate with the Theory Division and associated experimental and quantum-science programmes; AI research is also encouraged. Applications and reference letters are due at 11:59 p.m. Eastern Time on 20 November 2026.