Technical Lead, Quantum Qubit Simulations

Alice & Bob; Paris; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

BSPCE plan

IP bonuses

Remote-friendly policy

Parental benefits

Urban Sports Club

Mental health support

25 days vacation + RTT

Transportation allowance

Health insurance

Meal vouchers (Swile)

French language courses

Job summary

Alice & Bob is seeking an experienced physicist to lead the numerical simulation strategy for its groundbreaking superconducting qubits. You will define the simulation approach across microwave design and qubit dynamics, setting the bar for trusted results and driving the necessary methodological improvements.

With several years beyond your PhD in quantum physics, you will own technical direction and work closely with physicists and engineers to shape the lab-ready predictions that underpin our

Qualifications

• Several years of experience beyond PhD in quantum physics, microwave engineering and numerical methods.
• Proven ability to define and own a numerical simulation strategy.
• Comfort with challenging results and driving technical direction.

Responsibilities

• Own the numerical simulation strategy for superconducting qubits from design to validation.
• Define simulation approaches and set trust criteria for results.
• Collaborate with physicists and engineers to implement fixes and improvements.

Skills

Quantum physics

Microwave engineering

Numerical methods

Critical thinking

Education

PhD in Physics or related

Job description

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 250+ brilliant minds from over 35 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!

About the mission

We're looking for an experienced physicist to own the numerical simulation strategy for our superconducting qubits: setting direction, defining what counts as a trustworthy result, and identifying where our methods need to improve. Doing this means working across quantum physics, microwave engineering, and numerical methods. It calls for deep understanding of all three, and expertise where they intersect.

About the role

As technical lead for numerical simulation of superconducting qubits, you'll own how Alice & Bob predicts and validates device behavior before it reaches the lab. You'll define our simulation approach — from microwave design to qubit dynamics — and set the bar for when a result can be trusted. Where our methods fall short, you'll spot it and drive the fix. You're not executing someone else's roadmap; you're setting it, working closely with the physicists and engineers in the details.

About you

You have several years of experience beyond your PhD, with expertise spanning quantum physics, microwave engineering, and numerical methods. When a result doesn't hold up, you're comfortable challenging it and can rigorously demonstrate why. You're motivated by owning a technical direction rather than contributing to one.

Benefits:

- Our success is your success: own it with our BSPCEplan

- Direct IP Compensation:Earn substantial bonuses for driving the core patents that define our quantum architecture.

- Flexibleremotepolicy, up to 40 % a month

- A Parental planincluding additional benefits such as crèche support or additional days-off to take care of under 12 years old children

- Subsidized membership withUrban Sports Club

- Mental healthsupport withmoka.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

Researchshows 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.