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: We are looking for a Senior Infrastructure Engineer to own the technical evolution of our hybrid infrastructure (on-premise/cloud). You will be the technical reference for architecture, design, and implementation of the company's infrastructure projects in the quantum computing field. Responsibilities:

Architecture and design: Design infrastructure solutions adapted to our quantum measurement needs and define technical standards

Strategic projects: Lead high-impact projects such as:

JupyterHub migration to Kubernetes for our data science workflows

Internal cluster consolidation and optimization

Scalability solutions for our growing quantum measurement resource requirements

Time-stamping infrastructure evolution and improvements

Docker → Kubernetes migration for legacy applications

Infrastructure management: Implement and maintain servers supporting our quantum operations

Observability: Complete the deployment of our monitoring stack (node-exporter, Grafana) across all infrastructure

Innovation: Propose and implement solutions to support the company's rapid growth and evolving quantum computing needs

Technical advisory: Support teams on infrastructure matters and drive continuous improvement

Technical environment:

OS: Mainly Linux (Ubuntu), a few Windows servers

Containerization: Docker, Kubernetes (internal cluster)

Infrastructure: Hybrid on-prem/cloud architecture

Monitoring: Grafana, node-exporter, Prometheus

IaC: Terraform, Ansible

Development: Python widely used across the stack

Requirements:

Solid experience (5+ years) in infrastructure and systems

Core expertise: Linux (Ubuntu), system architecture, containerization (Docker/Kubernetes)

Python (scripting, code understanding)

JupyterHub (administration and deployment) - a real plus

Designing scalable architectures for high-performance computing needs

Hands-on experience operating and maintaining Kubernetes in production environments.

Proficiency in Python, including scripting, automation, and the ability to understand and review application code.

Experience with JupyterHub in administration and deployment; exposure to multi-user, scalable notebook environments is a strong plus.

Proven ability to design and implement scalable architectures tailored to high-performance computing.

Experience managing hybrid on-prem/cloud infrastructures

Knowledge of infrastructure best practices (monitoring, high availability, security)

Autonomy, pragmatism, and proactive mindset

Benefits:

25-day vacation policy (as per French law) + RTT

Half of transportation cost coverage (as per French law), or yearly allowance for bike enthusiasts

Competitive health benefits with Helium/AXA

Meal vouchers with Swile, as well as access to a fully equipped kitchen

Parental benefits with crèche support

Flexible remote policy, up to 40 % a month

Language courses covered by the company

Mental health support with moka.care

Subsidized membership with Urban Sports Club

Recruitment Process:

Screening Call with Doriane (30 min)

Technical Interview with the Team (60 min)

Hiring Manager Interview with Matthew (45 min)

Leadership Interview (60 min)

Fit Interview (30 min)

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.