Quantum Design Engineer

Planckian is developing the core technology to power utility-scale quantum computers. By design, our chip architecture decouples control lines from qubit count, removing a key bottleneck in scaling. It combines the proven reliability of superconducting circuits with a breakthrough approach to qubit control, paving the way for quantum computers capable of solving the world’s most challenging problems. What You’ll be doing

• Design superconducting qubits, couplers, and quantum circuits for scalable quantum processors
• Develop and optimize qubit architectures with respect to coherence, frequency crowding, control, and readout
• Perform electromagnetic and circuit-level simulations (participation ratios, loss channels, mode analysis)
• Analyze sensitivity to fabrication tolerances and process variations
• Define design rules that balance performance with manufacturability and yield
• Support the experimental team by interpreting measurement data and feeding results back into design iterations
• Contribute to system‑level architectural choices (connectivity, coupling schemes, control simplification)
• Document designs, simulations, and design rationale for internal and external use

• PhD or MSc in Physics, Applied Physics, Electrical Engineering, or related field
• Proficiency with EM and circuit simulation tools (e.g., HFSS, Sonnet, COMSOL, or equivalent)
• Background in superconducting qubit physics and circuit quantum electrodynamics (cQED)
• Solid understanding of decoherence mechanisms and materials loss in superconducting devices
• Hands‑on experience designing superconducting quantum circuits
• Ability to connect theoretical models with experimental constraints

• Competitive salary + benefits
• Stock options
• Flexible working hours with hybrid working
• Ego‑free, merit‑based environment

Planckian is an equal‑opportunity employer.