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Remote/Hybrid (Paris, France)
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Architect
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C12

C12 is a quantum computing hardware company headquartered in Paris, France, and founded in 2020 by twin brothers Matthieu and Pierre Desjardins. The company builds spin qubits from ultra pure carbon nanotubes suspended over silicon chips, an approach intended to reduce the noise that limits conventional solid state qubits. It works with research institutions and industrial partners in Europe and manufactures its devices using semiconductor compatible processes.

Your role at C12 Quantum Electronics:

    As Head of Theory & Applications at C12, you are expected to lead and coordinate the Theory & Applications team across three main areas:

  • Hardware Modeling

  • Quantum Error Correction

  • Quantum Algorithms for Industrial Applications

  • Key responsibilities:

  • You will define and drive the company’s theory roadmap, leveraging the expertise of team members to align with hardware development, business priorities and industrial quantum advantage opportunities

  • You will strengthen the company’s error correction strategy, from quantum error correction code benchmarking to implementation and fault-tolerance roadmap

  • You will drive co-design efforts between hardware and theory teams, working closely with domain experts to define scalable quantum computing architectures and long-term scalability strategies

  • You will recruit, mentor and structure the theory team as the company grows

  • You will establish collaborations with academia and research partners, and contribute to the scientific visibility and positioning of the company within the quantum ecosystem

  • You will prioritize research directions and resources by balancing scientific ambition, hardware feasibility and business impact, while building consensus across technical experts

About you:

  • You have a strong background in quantum computing with expertise in either:
  • Quantum Error Correction

  • Quantum Algorithms

  • You have a broad understanding of the quantum computing stack and ability to engage effectively with experts across theory and hardware domains

  • You have an architecture-level understanding of scalable quantum computing and fault-tolerant strategies

  • You have demonstrated scientific leadership, with the ability to articulate a vision, align experts and drive execution

  • You have an ability to connect theoretical developments with experimental and hardware constraints

  • Experience leading or mentoring research teams is highly appreciated

  • Experience working in startups or fast-pace private-sector environments is highly appreciated

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