Senior Staff Software Engineer

🕒 December 18, 2025

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Alice & Bob

WebsiteLinkedInAll Job Openings

11 - 50 employees

💰 Series A on 2022-03

At Alice&Bob, we build Universal, Error-free, Quantum Computers to help industries and researchers solve the hardest problems. Until now, errors were the main barrier to useful quantum computers. Our self-correcting quantum bits enable fault-tolerant quantum computing and can run any quantum algorithm. We aim to dramatically increase our computing power to tackle your toughest challenges. Now, what would you do with exponential computing power? We are a spin-off from the ENS Paris and ENS de Lyon based in Paris, France. #quantumcomputing

📋 Description

• Architect the **services, APIs, and internal frameworks** powering experiment workflows, calibration systems, automation loops, and configuration management. • Choose and integrate appropriate storage technologies (SQL, NoSQL, object stores, columnar formats) to support scaling needs and diverse access patterns. • Define architectural patterns that maximize **agility, modularity, and maintainability** across the platform. • Collaborate closely with physicists and researchers to ensure models and interfaces reflect real experimental needs and enable fast iteration. • Partner with data engineering to build reliable ingestion paths, schema governance, data lifecycle strategies, and cross-team storage standards. • Shape the end-to-end architecture required to deliver the QPU as a **cohesive product**: API design, user orchestration, deployment strategy, and integration with HPC/cloud ecosystems. • Drive long-term architectural strategy, technical roadmap, and cross-organizational alignment. • Mentor teams, challenge assumptions, and lead architecture reviews across the platform department.

🎯 Requirements

• 12+ years designing large-scale backend/platform architectures. • Superior engineering proficiency in **Python**, async frameworks, service design, data orchestration, and performance optimization. • Demonstrated experience architecting complex **infrastructure and data-heavy distributed systems**. • Ability to define clean abstractions and synchronization mechanisms for **hardware/software interaction loops**. • Deep expertise with **storage technologies across SQL, NoSQL, timeseries, object storage, and distributed filesystems**. • Strong product mindset: ability to think about **end-to-end delivery**, user experience, reliability, and long-term lifecycle. • Ability to collaborate and challenge ideas with physicists, academic-level experts, and deeply technical researchers. • Strong technical leadership: able to influence direction, align teams, and support cross-domain decision-making.

🏖️ 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