Condensed Matter Physics, Department of Physics, Clarendon Laboratory Building, Parks Road, Oxford, OX1 3PU Applications are invited for a Postdoctoral Research Assistant in Superconducting Quantum Circuits. The post is available initially for a fixed-term duration until 30 April 2026 This project aims to develop superconducting microwave interconnects and metasurfaces for distributed quantum networks, focusing on high-fidelity none-nearest neighbour entangling gates while addressing hardware overhead and thermal load in superconducting quantum circuits. The successful candidate will develop new characterization and benchmarking techniques for quantum algorithms on devices at or beyond the 16-transmon scale. They will also contribute to designing large-scale control and readout multiplexing based on cQED space-time modulation metasurfaces. Responsibilities include collecting and analyzing experimental data, publishing results, and presenting findings at conferences. This role may involve superconducting microwave circuit design and simulation, theoretical analysis of classical and quantum circuits, numerical method development, cleanroom device fabrication, cryogenic system operation, and microwave control electronics and software. The post-holder will also have the opportunity to teach. The post-holder will have the opportunity to teach. Applicants should hold a PhD, or be close to completion in physics or electrical engineering or a related field and have a strong background in experimental quantum information, clean room device fabrication and microwave techniques or quantum device physics. Previous experience in the field of superconducting quantum circuits, circuit theory and synthesis, and microwave techniques will be an advantage. Candidates are expected to demonstrate excellent teamwork and communication skills.