Quantum R&D Engineer - Processors

About the role

You will conceive and deliver the architectural backbone of next-generation quantum processing units, owning the full lifecycle of critical on-chip components from initial concept through tapeout and measurement. You will design, simulate, and validate novel inter-qubit couplers and readout architectures that directly enhance the performance and scalability of our VIO-based QPUs. You will take end-to-end responsibility for device development, driving designs from theoretical modeling through to experimental validation at cryogenic temperatures. You will write and refine automation scripts to streamline design, simulation, and data analysis workflows, reducing manual effort and accelerating iteration cycles. You will collaborate daily with cross-functional hardware and measurement teams to ensure rapid design-to-test feedback and seamless integration. You will perform detailed cryogenic measurements to extract performance metrics, diagnose anomalies, and feed insights back into architectural refinements. You will contribute your expertise to shape the roadmap of large-scale quantum processors and ensure that each design iteration advances toward MegaQubit systems.

Key facts

What you'll do

• Architect next-generation, large-scale superconducting quantum processor layouts, focusing on scalable qubit arrays, inter-qubit couplers, and integrated readout structures.
• Design and simulate custom test vehicles and prototypes to benchmark new component implementations against performance targets before integrating them into full processors.
• Measure and validate device performance by designing and executing cryogenic experiments that characterize qubit coherence, gate fidelity, and readout accuracy.
• Take complete ownership of component development, guiding projects from initial concept and electromagnetic simulation through fabrication, testing, and iterative optimization.
• Automate measurement and analysis pipelines by writing robust Python code and integrating tools to handle large datasets and complex calibration routines.
• Collaborate closely with design and measurement engineers to establish rapid design-to-test cycles, aligning simulation predictions with experimental outcomes.
• Utilize advanced electromagnetic simulation tools such as HFSS and COMSOL, alongside quantum design platforms like pyEPR and Quantum Metal, to model and optimize circuit elements.
• Maintain layout integrity and design consistency using KLayout, ensuring that chip designs are manufacturable and meet fabrication constraints.
• Drive a proactive, detail-oriented approach to scaling quantum technology, identifying risks early and implementing robust design controls.
• Thrive in a collaborative environment by taking initiative, sharing insights, and owning decisions from day one to accelerate processor development.

Requirements

• Bring 5+ years of hands-on experience in multi-qubit superconducting quantum device development, with a track record of contributing to processor-level designs.
• Demonstrate a deep understanding of cQED, quantum microwave circuits, and the physics of superconducting qubits in practical implementations.
• Show extensive experience in the design, fabrication, and cryogenic measurement of superconducting qubit circuits and related control electronics.
• Exhibit proficiency in Python and software tools commonly used in quantum design and experiments, including HFSS, COMSOL, pyEPR, scqubits, Quantum Metal, and KLayout.
• Cultivate a proactive, detail-oriented mindset with a strong drive to solve hard engineering problems and scale quantum technology toward real-world impact.
• Operate comfortably in a collaborative setting, communicating clearly with multidisciplinary teams and taking ownership of tasks from conception through delivery.
• Align with QuantWare's pace of innovation, adapting to evolving requirements while maintaining rigorous standards for data analysis and documentation.
• Commit to contributing to a diverse and inclusive research environment, where varied perspectives strengthen technical outcomes and team culture.

Nice to have

• Experience with automated measurement frameworks and data orchestration in quantum experiments.
• Familiarity with advanced packaging and cryogenic control strategies relevant to large-scale qubit processors.
• Prior involvement in tapeout processes and close collaboration with fabrication teams in a superconducting quantum foundry environment.

Practical notes

This is a full-time position based in Delft. The compensation details are not specified in the source material. The role requires hands-on experience with superconducting quantum processors and cryogenic measurement techniques. Applicants who do not meet every listed criterion are encouraged to apply if they believe they can make a meaningful contribution.