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! The Calibration team automatizes calibrations of our cat‑qubit Quantum Processing Unit (QPU) to maximize performance and keep the processor in working conditions. As Calibration Workflow Engineer, you will design and implement the top‑level controller that runs the QPU performance checks and the automatic recalibration DAG, enforces policies and QA gates, and provides robust retry and manual‑intervene flows. You will work closely with quantum experimentalists, backend engineers, and the analytics team to make calibrations reliable, auditable, and production‑ready. Responsibilities:

Design and implement the architecture handling the DAG controller and orchestration layer for initial and periodic recalibrations.

Define node semantics: inputs, outputs, idempotency, timeouts, retries, and safe rollback behavior.

Implement policy engine for top‑down checks and conditional decision trees that trigger recalibrations.

Build operator flows for pause, diagnostics, suggested fixes, and resume from failing nodes.

Collaborate with experimentalists to translate calibration procedures into robust, testable orchestration primitives.

Drive reliability through automated testing (unit, integration, hardware‑in‑the‑loop) and runbook automation.

Requirements:

5+ years software engineering experience with production orchestration or workflow systems.

Strong Python skills; experience building reliable control software for hardware.

Experience with workflow/DAG frameworks (e.g., Airflow, Prefect, or custom orchestration).

Proven track record in fault‑tolerant systems, retries, idempotency, and observability.

Familiarity with instrumentation control and hardware interfaces (SCPI, VISA, gRPC, serial) or willingness to learn.

Experience with testing strategies for hardware‑in‑the‑loop and CI/CD pipelines.

Excellent communication skills and ability to work with experimental scientists.

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.