Quantum Design Engineer: QPU Architecture & Nonreciprocal Circuits

QuantWare; Delft; On-site; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Competitive salary

8% annual holiday bonus

Relocation support

Flexible working hours

Personal growth budget

Job summary

A leading quantum hardware company in Delft is looking for a Quantum Design Engineer to design and optimize superconducting quantum processors. The ideal candidate will have a strong background in Physics or Electrical Engineering, with experience in device architecture and simulation tools. This role emphasizes collaboration and innovative solutions in a fast-paced environment.

Qualifications

• 2+ years of industry experience or a PhD with relevant hands-on work.
• Experience with EM simulation and chip design tools is preferred.
• Experience designing nonreciprocal superconducting circuits or advanced readout techniques is highly valued.

Responsibilities

• Design and simulate cutting-edge quantum hardware.
• Develop manufacturable device architectures.
• Collaborate across teams for rapid design-to-test cycles.

Skills

Strong Python skills

Knowledge of cQED devices

Solid grasp of microwave engineering

Education

MSc in Physics, Electrical Engineering, or related field

Tools

Ansys HFSS-Q3D

KLayout

Git

Job description

About Us

QuantWare is building the world’s most powerful quantum processors to solve humanity's greatest challenges. We do this with our unique VIO™ technology, the only QPU architecture that breaks the hardware barriers that have held quantum computing back, unlocking the path to MegaQubit quantum processors.

With VIO, we are paving the way for the hyper-scale quantum computers that will change the world. And delivering on that vision demands people who don’t shy away from tackling the hardest challenges of our time. That’s where you come in!

As a Quantum Design Engineer in our R&D team, you’ll be at the heart of advancing the performance and scalability of superconducting quantum processors. You’ll lead the design of next-generation qubit chips and modular, scalable QPU architecture, working from on-chip subsystem architecture to EM simulations, frequency allocation, crosstalk management, packaging, and interconnect strategies.

You’ll also design and optimise nonreciprocal superconducting circuits, such as isolators and parametric amplifiers that will drive robust, high-fidelity readout chains. These designs will enhance readout signal-to-noise ratio and stability, feeding into our next-gen readout modules and ensuring seamless coupling with the qubit layer.

This role is highly collaborative: you’ll work in a tight feedback loop with experimentalists and device engineers to transform measurement insights into rapid design iterations, pushing performance, coherence, yield, and manufacturability across the full qubit stack.

What you’ll be doing

• Design and simulate cutting-edge quantum hardware to improve performance, coherence, and scalability.

• Develop high-performance, manufacturable device architectures that accelerate R&D cycles and increase qubit fidelity and yield.

• Architect and optimize the layout of nonreciprocal superconducting circuits such as parametric amplifiers, targeting robust performance under cryogenic conditions.

• Interpret simulation results and correlate with experimental data to guide iterative design improvements.

• Collaborate across teams to ensure rapid design-to-test cycles, connecting theory with experiment.

• Automate the design pipeline using Python, enabling parametric device generation, simulation sweeps, and data post-processing.

Your profile

• MSc in Physics, Electrical Engineering, or related field, with 2+ years of industry experience or a PhD with relevant hands-on work

• Strong Python skills for automating designs, controlling simulations, and analyzing data

• Experience with EM simulation and chip design tools (e.g. Ansys HFSS-Q3D, KLayout); Git and Qiskit-Metal familiarity is a plus

• Knowledge of cQED devices and superconducting circuit design is a strong advantage

• Experience designing nonreciprocal superconducting circuits (e.g. parametric amplifiers) or advanced readout techniques is highly valued

• Solid grasp of microwave engineering, quantum noise sources, and fabrication methods

Don't tick every box? Apply anyway. We know great candidates don't always follow a straight path, and we value diverse experience, perspectives, and ways of thinking. If this role excites you and you believe you can make an impact, we'd love to hear from you!

What We Offer:

At QuantWare, you’ll be part of a high-performing team of world-class experts in an ambitious, fast-moving environment. From day one, you’ll have the trust, tools, and support to do your best work. Here’s what you can expect:

Competitive salary - A salary that reflects the impact and importance of the role (and of course 8% holiday allowance)

Pension that’s built to last - A generous and future-proof pension plan that includes partner and dependent coverage.

Flexibility built on trust - We focus on outcomes. Work flexibly, in a hybrid setup, with an open vacation policy that lets you manage your time

Personal growth - We invest in your L&D, with a budget available to each team member, dependent on their individual ambitions, development needs, and performance

A connected team - We make space to celebrate wins together, with team events, offsites, and spontaneous moments that bring us closer

Diversity & Inclusion at QuantWare

We’re an ambitious company, not only for our goals but also to become an even more diverse and inclusive team. We know this helps us with better decisions, more innovation, and strengthens our culture. In particular, we’d love to see more women in the quantum industry!

So if you’re a female talent, excited about this opportunity but don’t meet every single requirement, we still encourage you to apply.

As part of our recruitment process, candidates may be required to undergo pre-employment screening.