Software Engineer, Sr./Staff

About The Company
Alice & Bob is at the forefront of quantum computing innovation, dedicated to developing the first universal, fault-tolerant quantum computer capable of solving some of the most complex problems faced by the world today. Our groundbreaking approach leverages a novel superconducting qubit technology known as the Schrödinger cat qubit, which uniquely enables autonomous quantum error correction. This pioneering technology positions us as a leader in the quantum industry, aiming to revolutionize computation across various sectors including scientific research, cryptography, and high-performance computing. Our team comprises top-tier scientists, engineers, and industry experts committed to pushing the boundaries of quantum technology and making practical quantum computing a reality.

About The Role
As a Senior Staff Engineer at Alice & Bob, you will play a critical role in shaping the architecture and evolution of our quantum software infrastructure. Your primary responsibility will be to develop and maintain the foundational systems that ensure our quantum processors operate reliably, scalably, and autonomously. You will design the core frameworks for error correction, quantum compilation, data flow management, storage solutions, orchestration layers, and automation pipelines. These systems are essential for transforming raw quantum hardware into a robust, production-grade quantum processing unit (QPU) deployable in high-performance computing (HPC), on-premises, and cloud environments. This position sits at the intersection of system design, data engineering, and quantum control infrastructure, requiring close collaboration with hardware/software teams, quantum theorists, data engineers, and operations teams to build scalable and error-resilient quantum computing solutions.

Qualifications

• 12+ years of experience in building large-scale, high-reliability systems, infrastructure layers, or scientific platforms.
• Proven expertise in architecting complex, data-intensive distributed systems.
• Strong proficiency in Python, async frameworks, service-oriented architecture, data orchestration, and performance optimization.
• Deep knowledge of storage technologies including SQL, NoSQL, time-series databases, object storage, and distributed filesystems.
• Hands-on experience with automation systems such as schedulers, workflow engines, configuration management, and data pipelines.
• Ability to create clean abstractions and synchronization mechanisms for hardware/software interaction loops.
• Excellent understanding of containerization (Docker, Kubernetes), reproducible environments, multi-tenant architectures, and hybrid HPC/cloud deployments.
• Strong leadership skills with the ability to influence cross-functional teams, align research and hardware groups, and drive technical modernization.

Responsibilities

• Define and lead the architecture of the Quantum Infrastructure layer bridging low-level control software and user-facing services.
• Collaborate with quantum hardware and control software teams to integrate requirements for qubit calibration, stabilization, and error correction cycles.
• Design the software backbone supporting real-time and near-real-time feedback between hardware components, error correction logic, and automation systems.
• Architect data and service layers to support quantum error correction frameworks, lattice configurations, syndrome extraction workflows, decoding, and long-term state tracking.
• Develop a robust and flexible quantum circuit compilation stack that can easily integrate with various frameworks and accommodate future upgrades.
• Act as a technical authority on quantum infrastructure and scalable data systems, providing guidance and mentorship to engineering teams.
• Drive the long-term architectural strategy, define the technical roadmap, and ensure cross-organizational alignment on project goals and deliverables.

Benefits

• Ownership of your work with our BSPCE stock option plan, allowing you to share in the company's success.
• Substantial bonuses linked to core patents and innovations in quantum architecture.
• Flexible remote work policy, enabling up to 40% remote work per month.
• Comprehensive parental leave benefits, including crèche support and additional leave for caring for children under 12.
• Subsidized membership with Urban Sports Club to promote health and wellness.
• Mental health support services provided through moka.care.
• Generous vacation policy of 25 days plus RTT, in accordance with French law.
• Transportation cost coverage or yearly bicycle allowance for eco-friendly commuting.
• Competitive health insurance coverage with Alan.
• Meal vouchers via Swile and access to a fully equipped, regularly stocked kitchen.
• French language courses funded by the company for interested employees.

Equal Opportunity

At Alice & Bob, we are committed to fostering an inclusive and diverse work environment. We believe that a variety of perspectives and backgrounds drives innovation and excellence. We welcome applications from all qualified individuals regardless of race, gender, age, religion, sexual orientation, disability, or any other characteristic protected by law. Our hiring practices are designed to ensure equal opportunity for all candidates and to promote a workplace where everyone can thrive and contribute to our mission of advancing quantum computing technology.