The Role
The role involves developing and troubleshooting microwave circuits for superconducting qubits, requiring simulation, design, and collaboration with experimental physicists.
Summary Generated by Built In
Alice & Bob is developing the first universal, fault-tolerant quantum computer to solve the world’s hardest problems.
The quantum computer we envision building is based on a new kind of superconducting qubit: the Schrödinger cat qubit. In comparison to other superconducting platforms, cat qubits have the astonishing ability to implement quantum error correction autonomously!
We are at the forefront of the quantum race, competing with tech giants such as Google or IBM, and we are growing fast after securing €100 million of funding in 2025 to develop our unique technology.
Currently 100+ and counting, between physicists, PhD students, engineers and experienced business professionals, we are united to reach our ambitious goal. Are you a quantum pioneer? Join us on a mission to reshape the future!
About the role
As a Superconducting Qubit Design Engineer, you will be part of the development of our new, cutting-edge microwave architecture embedding the superconducting resonators, and specifically designed to preserve and control their quantum states.
Your mission will be to develop, simulate and troubleshoot microwave circuits and their controls. You will work hand in hand with the experimental physicists building the quantum processor and develop state-of-the-art hardware to control and design an ever more complex system.
Responsibilities
- Numerical simulations for the on-chip circuits and its packaging
- Accurate prediction of interface losses
- Accurate prediction of inter resonator couplings
- Design, development and troubleshoot of room temperature hardware (filters, PCBs, etc.)
- Design of the architecture of the upcoming multi-qubits circuits
Requirements
- 5+ years of relevant experience
- An MSc or PhD degree in electrical/microwave engineering or related subjects
- Experience with EDA software Ansys HFSS or similar
- Experience in Python programming
- Strong knowledge in transmission line theory and wave propagation
- Knowledge on passive and active RF/MW components
- Experience in cryogenics and/or quantum mechanics
- Professional-level English proficiency, both written and spoken.
Benefits
- Our success is your success : own it with our BSPCE plan
- Direct IP Compensation: Earn substantial bonuses for driving the core patents that define our quantum architecture.
- Flexible remote policy, up to 40 % a month
- A Parental Plan including additional benefits such as crèche support or additional days-off to take care of under 12 years old children
- Subsidized membership with Urban Sports Club
- Mental health support with moka.care
- 25-day vacation policy (as per French law) + RTT
- Half of transportation cost coverage (as per French law), or yearly allowance for the die-hard bicycle users
- Competitive health coverage, with Helium/Axa
- Meal vouchers with Swile, as well as access to a fully equipped and regularly stocked kitchen
- French language courses covered by the company for those interested
Recruitment Process
- Screening Call with Grace, Talent Acquisition Specialist (30 min)
- Hiring Manager Interview with Felix (45 min)
- Technical Interview/Presentation with the team (60 min)
- Leadership/Fit Interview (45 min)
- Reference Check
Research shows that women might feel hesitant to apply for this job if they don't match 100% of the job requirements listed. This list is a guide, and we'd love to receive your application even if you think you're only a partial match. We are looking to build teams that innovate, not just tick boxes on a job spec.
You will join of one of the most innovative startups in France at an early stage, to be part of a passionate and friendly team on its mission to build the first universal quantum computer!
We love to share and learn from one another, so you will be certain to innovate, develop new ideas, and have the space to grow.
Top Skills
Ansys Hfss
Python
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The Company
What We Do
Founded in 2020, Alice & Bob secured $30 M funding in Series A.
Today, we're recognized as one of the leaders in Quantum Computing.
Our cat qubits are error corrected by design, reducing hardware requirements by up to 200 times compared to other platforms enabling fault-tolerant quantum computing at scale.
Our headquarters is located in Paris, with offices in Boston, MA.
We are 80+ smart and dedicated innovators, coming from 17+ countries and growing by the day. We are committed to one mission: build a useful quantum computer.
Check open positions: bit.ly/joinusatAB
