Senior Backend Engineer – Quantum Experiment Platform

A deeptech startup in Paris is hiring a Senior Data & Platform Engineer focused on post-quantum cryptography. You will design and maintain the data infrastructure for COMPASS, ensuring data governance, ingestion pipelines, and optimal collaboration with backend teams. Ideal candidates will have a Master's degree, 15+ years of experience, and deep expertise...

Post Quantum Cryptography | Cybersecurity | We're hiring Who we are CryptoNext Security is a deeptech startup specializing in post-quantum cryptography. We help businesses and institutions prepare for a world where quantum computers will challenge today's security standards. Our clients include major financial institutions, defense actors, telecom operators,...

Founded in 2020 and based in the heart of Paris, C12’s mission is to be at the center of one of the biggest technological breakthroughs of the century and change the course of history by building a universal quantum computer. At C12, we believe that achieving a true breakthrough in quantum computing requires rethinking the fundamentals. That’s why our...

C12 develops quantum computers, to solve highly complex computing tasks, currently out of reach of even the most powerful supercomputers. Building a quantum computer still needs innovators ready to tackle exciting challenges. C12’s founders are convinced that only a new material for the qubit will bring a technological breakthrough. C12 uniquely uses...

**Advance practical quantum computing through robust, production‑grade software.** We are looking for a Software Engineer (Quantum Platform and Tools) to contribute to the development of core components of our stack—from designing performant transpilation passes and hardware integrations to expanding our cloud‑native SDK and CI/CD...

Founded in 2020 and based in the heart of Paris, C12's mission is to be at the center of one of the biggest technological breakthroughs of the century and change the course of history by building a universal quantum computer. At C12, we believe that achieving a true breakthrough in quantum computing requires rethinking the fundamentals. That's why our...

A leading quantum technology company in Paris is seeking an experienced senior software developer. You will support research teams and improve processes by developing tools and maintaining the C12's emulator, Callisto. The role requires strong software development experience, good communication skills in English, and an interest in quantum technologies. Join...

A leading digital MedTech company in Paris is seeking a Senior Software Engineer to enhance their data platform. The role requires strong Java and TypeScript expertise to manage data pipelines crucial for monitoring patients' health. Ideal candidates have over 5 years of backend development experience and a Master's in a related field. This position offers a...

C12 develops quantum computers, to solve highly complex computing tasks, currently out of reach of even the most powerful supercomputers. Building a quantum computer still needs innovators ready to tackle exciting challenges. C12’s founders are convinced that only a new material for the qubit will bring a technological breakthrough. C12 uniquely uses...

A financial technology company in Paris is seeking a Senior Backend Engineer to design and build core services for their global trading platform. The role requires strong programming skills in Rust and knowledge of API design. Responsibilities include developing scalable backend systems and optimizing performance for trading services. Ideal candidates will...