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We are seeking a Quantum Engineer to demonstrate and develop scale-up-enabling quantum wiring product. This role will involve building and operating our first quantum test lab, running advanced quantum measurements and meeting quantum researchers all over the world to drive the development products.
About Isentroniq
At Isentroniq, we make quantum computing, with hardware. We enable quantum computing at scale by developing superconducting circuits solutions to increase the qubit count by more than a 1000x at fixed cost and size of infrastructure.
We share knowledge openly, challenge ideas constructively, and stay focused on what matters. Our values - gritty ambition with humility, radical candor, methodical audacity and sense of belonging - are at the core of how we work and grow.
If you’re passionate about transformative innovation, and ready to build what quantum needs to take off, join us and let’s shape the future together.
Key Responsibilities
Own the quantum wiring software. Build the math and algorithmics, and suggest, prioritize and specify features of our quantum wiring software. Build the first wiring optimization routines on it.
Define and execute product roadmap. Invent ways to make better wirings. Specify, design and integrate the components we develop into stunning demonstrators and scale-up-enabling products for quantum computing companies.
Building product tests. Build the mechanical, microwave and quantum test suite to validate the performance of demonstrators, and later of products.
Orientate RF and Mechanical engineering teams. Give feedback and design specifications on the components produced by the other teams.
Team building. Participate in building the team, by attracting and selecting world-class quantum engineers to work with you.
Who you are
We’re looking for a product-savvy builder, who is eager to change the way quantum scales by delivering cutting-edge, impactful products. You have an engineering mindset, you want to solve problems, and you are not afraid to get your hand dirty in diverse tasks like math, code, hand-work, purchases or soldering test, to get build your prototypes.
Key Qualifications
A PhD in experimental quantum computing in solid-state qubits (superconducting circuits, spins, dots, graphene, etc).
Experience setting up and operating a complete cryogenic measurement setup, with personal experience specifying, installing and operating the DC and RF wiring.
Strong python coding skills to build simulators and analyses on any technical problem, from quantum devices to RF chains and heat transfer.
Strong knowledge of passive microwave engineering. The first 9 chapters of Pozar are no secrets for you. You master microwave networks and have extensive knowledge in passive microwave components.
Deep knowledge of superconducting quantum devices. You can design qubit chips. Going from finding a readout resonator to single-qubit gates, single-shot readout, and is an easy game for you.
Strong interpersonal and communication skills to build consensus among project stakeholders
Communication proficiency in English
Bonus
Basics of neighbor fields. Qubit, PCB and/or semiconductor fabrication techniques. Qubit design. Heat transfer and cryogenics. Engineering sub-fields of RF connectors, like micromechanics, soldering techniques, or microwave.
Proficiency in French
Personal Attributes
You are a builder. You are hands-on, enjoy discomfort and are not afraid to do make things from scratch: complete setups, scripts, purchases, processes, etc.
You embody an engineer’s mindset, with meticulous attention to details and a systematic approach to problem-solving.
You are autonomous, ambitious, organized, and enjoy driving a project.
You value transparency and open communication, fostering trust and collaboration. You enjoy having your ideas and suggestions be boldly challenged and you feel free to speak about achievements and mistakes.
You are eager to learn and grow. You recognize the strength of teamwork. You feel challenged by competing alternative approaches, instead of looking down on them.
You thrive in an environment of high expectations, pushing boundaries to achieve breakthroughs.
What We Offer
A unique opportunity to shape the technological direction of a cutting-edge start-up.
The unique chance to develop scale-up-enabling products and the quantum test machines that will drive the company's success.
A collaborative, mission-driven culture with a focus on personal and professional growth.
Competitive salary and equity package.
Job Type
Permanent position
Location
St-Germain-en-Laye (FR)
Start Date
Q2 2026
Join us making quantum computing happen.
Please send your CV and a cover letter outlining your relevant experience and motivation.
Applications will be reviewed on a rolling basis, so we encourage early submissions.
