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Delft

Full time

On‑site

Operations

QuantWare 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 QuantWare, 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 Cryogenics Engineer, you will play a key role in scaling and optimising the cryogenic infrastructure that powers our quantum hardware. From achieving near state‑of‑the‑art coherence performance to ensuring high uptime and throughput across our cryostat fleet, your work will directly influence the success of our R&D and product development efforts. You’ll lead the commissioning and continuous optimisation of cryogenic systems and infrastructure, enabling the next generation of quantum processors.

Core Responsibilities

• Improve cryogenic setup performance, including coherence, base temperature stability, ground loops, and dephasing, to near state‑of‑the‑art levels

• Expand cryogenic measurement capacity by increasing cooldown throughput from 8 to 12 devices per cycle

• Maintain operational availability of our cryostats at 95% or higher as the fleet scales

• Procure, install, and commission new cryogenic systems, with full operation within four weeks of delivery

Supporting Responsibilities

• Collaborate with engineering teams to support measurement campaigns

• Optimise electromagnetic shielding and device packaging

• Improve S‑parameter measurement accuracy and overall RF setup performance

• Deep understanding of cryogenic systems and common failure modes

• Hands‑on experience with RF measurements and optimisation of RF setups

• Experience with CAD design is a plus

• Proactive, detail‑oriented mindset with a strong drive to improve and scale complex technical infrastructure

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 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. QuantWare covers 63% of the premium

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

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 support your physical and mental energy through wellness initiatives that help you recharge and stay sharp

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

Financial clarity - Through our partnership with Equip, you’ll get tools and expert guidance to help you understand and optimise your total compensation

At QuantWare, we’re committed to building a diverse and inclusive team where everyone feels respected, valued, and empowered to contribute. We believe that varied perspectives drive better decisions, foster innovation, and strengthen our work.

If you’re excited about this opportunity but don’t meet every single requirement, we still encourage you to apply. You might bring a unique perspective or skill set that makes you a great fit for our team.

If you have any questions about the role or hiring process, feel free to contact our Talent Partner, Roberta Dessi, at roberta.dessi@quantware.com.

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