Quantum Design Engineer

Location
Delft

Employment Type

Full time

Location Type
On-site

Department
R&D

About Us
Quant Ware is the world's leading manufacturer of superconducting quantum hardware. As a high growth start-up with a global customer base, our mission is to accelerate the advent of the quantum computer. We push the boundaries of what's possible in our field. We work on making the world’s largest quantum processors, as fast as possible.

At Quant Ware, we’re not just producing quantum hardware for the hyperscalers of tomorrow; we’re working on technology that will change the world. To make that ambition a reality, we need exceptional people who drive real impact. 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.

What We Offer:

At Quant Ware, 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 competitive monthly salary, plus an 8% annual holiday bonus paid out each May.

Pension that’s built to last  A future-proof pension plan that includes partner and dependent coverage. Quant Ware covers 63% of the premium.

Flexibility built on trust  We focus on outcomes, not hours. You’re trusted to manage your time and energy responsibly, in a hybrid setup with an open vacation policy, because with freedom comes ownership.

Relocation support  If you’re moving to the Netherlands, we’ll make the transition seamless. We cover visa support, temporary housing in most cases, and help securing the 30% tax benefit for eligible candidates.

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 focus on well-being  We…