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.

We are seeking a Quantum Design Engineer to support the design and optimization of superconducting qubits and quantum circuit architectures.

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

Requirements

• 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

Every job has its challenges, and this one is no exception. While many companies gloss over them, we believe in being upfront:

• You’ll face tough situations, especially the classic challenge: people problems. Navigating human dynamics can be tricky and requires patience and empathy.

• Some work is unglamorous, but building a great company means rolling up your sleeves. From strategic decisions to hands-on grunt work, everyone contributes to the heavy lifting.

We're not looking for perfection; we're looking for people who are ready to grow through the hard parts and help us build something that lasts.

What We Offer

• Competitive salary + benefits

• Stock options

• Flexible working hours with hybrid working

• Ego-free, merit-based environment

Planckian is an equal-opportunity employer.