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We are looking for a Quantum Microwave Intern to help prototype our quantum wiring product. Working closely with our engineering team, you will own a well-defined project spanning cryogenic RF characterization, RF design and design automation. The internship sits at the crossroads of experimental quantum physics and RF engineering. You will use superconducting qubits as sensors to characterize microwave components, design the passive RF structures that go into our hardware, and build the tools that automate that design loop. The role is highly hands-on, spanning software development, experimental physics and RF engineering. You will work directly with our cryogenic quantum measurement setup, instrumentation and code, from first measurements to validated designs.
About Isentroniq
At Isentroniq, we are building the future of computing - not in theory, but in hardware. We enable quantum computing at scale by developing superconducting circuit solutions that increase qubit count by more than 100x at fixed cost and infrastructure size.
We share knowledge openly, challenge ideas constructively, and stay focused on what matters. Our values - gritty ambition with humility, radical candor, surgical audacity, and self-accountable teamwork - 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 go further, join us.
Key Responsibilities
Cryogenic RF characterization of microwave components and their impact on superconducting qubit performance, using the qubits themselves as sensors for temperature and quasiparticle metrology.
Design and simulate passive RF structures for cryogenic quantum hardware (including transmission lines, resonators, impedance transitions, and filters) and validate their performance through analytical models and EM simulation tools.
Develop a Python-based automation workflow that takes high-level RF specifications as input and generates optimized, simulation-ready designs, accelerating the RF iteration cycle for our quantum wiring product.
Who you are
We’re looking for a talented and passionate student, eager to learn and do hands-on experimental work and programming for quantum systems. You have an engineering mindset and love seeing ideas turn into working demos and products rapidly.
Key Qualifications
Master’s student in Physics, Engineering, or a related field.
Python coding skills.
Strong background in linear algebra. It is the heart of Quantum physics and microwave engineering.
Communication proficiency in English. Your supervisors will be world class quantum and radiofrequency engineers but won’t speak French.
Bonus
Familiarity with quantum mechanics and / or radiofrequency engineering.
Prior experience with EM, e.g., with simulation software such as Ansys HFSS, CST, or ADS.
Personal Attributes
You are autonomous, ambitious, and organized.
You are a hands-on builder, comfortable starting from scratch and willing to own things end-to-end - setups, scripts, purchases, processes.
You communicate openly and directly: you welcome pushback on your ideas and are candid about both wins and mistakes.
You are eager to learn and grow. You see competing approaches as a feature, not a threat, and draw strength from collaboration.
You thrive under high expectations, pushing for breakthroughs rather than settling for good enough.
What We Offer
A unique opportunity to participate to the origin of a cutting-edge start-up.
Work with and learn from world-class talents
A collaborative, mission-driven culture with a focus on personal and professional growth.
Job Type
Internship (4-6 months)
Location
St-Germain-en-Laye (FR)
Start Date
Q1 2027
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.
