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're a diverse team of 140+ brilliant minds from over 20 countries united by a single goal: to revolutionise computing with a practical fault-tolerant quantum machine. Are you ready to take on unprecedented challenges and contribute to revolutionising technology? Join us, and let's shape the future of quantum computing together!

Inside the Quantum Hardware department, the Nanofabrication Front End team is in charge of producing the superconducting circuits that serve as a basis of our quantum computer. The manufacturing process involves using thin film deposition and patterning methods (evaporation, etching, lithography…) performed in a cleanroom environment. The team is in charge of developing and improving the process, and manufactures the prototype chips of the company.

Role Overview

Are you passionate about cutting-edge technology and eager to work on groundbreaking innovations in quantum computing? As a Senior Superconducting Material Engineer at Alice & Bob, you'll play a pivotal role in the fabrication of superconducting circuits—critical components for next-generation quantum processors. In this context, you will have to master advanced growth and characterization techniques to reach state-of-the-art performances.

This role combines expertise in material growth and structural characterization, collaborative work with the other nanofab team members, data analysist, quantum physicists and microwave engineers to identify and pursue new development approaches ; participation in the technical “life” and evolution our new nanofabrication facility.

You'll have the opportunity to contribute to a revolutionary field while collaborating with experts and traveling to partner technology platforms in the Île-de-France region. If you’re a tech enthusiast with a drive for precision and a passion for quantum technology, we want you on our team!

Key Responsibilities

At Alice & Bob, you will:

Develop Niobium and Tantalum thin film growth conditions to reach state of the art performances

Perform characterization of manufactured thin films (XRD, SEM, AFM, basic room temperature measurements, etc.)

Participate to the production superconducting device by the front-end team

Conduct collaboration with academic and industrial partners for improving the “quality” of superconducting films deposited at Alice&Bob

Stay up to date, in the state-of-the-art growth process of Superconducting materials used for superconducting Qubit.

Participate in the operation of our future “nanofab” facility by taking the responsibility of one or two process equipment.

Identify and implement improvements in hardware capabilities to enhance production efficiency.

What We're Looking For

Educational Background: A phd or master’s degree in material science, physical characterization, semiconductors or equivalent

Experience: 5+ of material growth / characterization + clean room work

Technical Skills:

HUV sputtering material deposition of superconducting thin films

Characterization : SEM, AFM, XRD, XPS ….

Knowledge in nanofabrication process techniques : lithography, plasma etching ..

Key Competencies:

Meticulous and patient

Strong communication skills and a collaborative mindset.

A proactive, curious, and committed attitude toward work and personal development.

Bonus : Experience in fabricating superconducting circuits

If you're ready to be part of a team that's at the forefront of quantum computing, building the next generation of quantum processors, apply now and take your career to the next level!

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 Alan.

- 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

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.