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C12 Quantum Electronics Logo C12 Quantum Electronics · Research and Development

Quantum Measurement Engineer

France, Paris · Job Posted December 06, 2025
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Job Description

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 founders—deeply rooted in academic and engineering excellence—have chosen carbon nanotubes as the building blocks of our quantum processors. This ultra-pure material dramatically reduces error rates, boosts performance, and minimizes hardware overhead—key ingredients for scalable, fault-tolerant quantum computing. By crafting a unique approach that scales, we aim to revolutionize quantum computing just as silicon transformed classical computing. Since our founding, we’ve raised over €25 million in funding, published 11 scientific papers, and secured 8 patents. Today, our fast-growing team of 60, including 20 PhDs, has over 20 nationalities represented. We have our own cutting-edge lab spaces in Paris' historic Panthéon district, where scientists, engineers, and innovators work side-by-side to tackle some of the most exciting technical challenges of our time. If you're passionate about shaping the future of quantum technology and want to make a real impact, C12 offers a unique environment to grow, learn, and innovate.

Job Responsibility

  • Perform experimental programs to optimize quantum operations on multi-qubit chips, driving improvements in control fidelity and system performance
  • Advance a physical understanding of spin qubits in carbon nanotubes integrated within high-impedance cQED platforms, working closely with the theory team to bridge experiment and modeling
  • Design, develop, and refine DC and microwave measurement setups and control software, emphasizing automation, calibration accuracy, and long-term experimental stability
  • Generate and maintain high-quality measurement datasets through rigorous analysis, thorough documentation, and reproducible experimental practices

Requirements

  • A PhD in quantum physics, electrical engineering, or a closely related discipline
  • Deep understanding of quantum mechanics and experimental quantum systems
  • Hands-on experience with quantum hardware (qubits, cQED, quantum dots) is beneficial
  • Good coding skills in python and experience with data acquisition frameworks
  • Strategic thinker who connects experimental needs with engineering execution
  • Strong communication skills in English (oral and written)

Nice to have

Hands-on experience with quantum hardware (qubits, cQED, quantum dots)

What we offer

  • Stock options for every employee (BSPCE/ESOP)
  • Two incredible office spaces in the heart of Paris (both next to the famous Panthéon!)
  • Sponsored trip to conferences around the world
  • A highly dynamic international team
  • Swile meal vouchers
  • Vibrant office culture (team lunches, offsite events, Friday breakfasts..)
  • Mental health support with moka.care
  • Training budgets/ Annual Learning & Development Allowance
  • Sabbatical leave (after 2 years in the company)
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