C12

Lead AI Engineer (Quantum Systems)

Posted 13 Days Ago

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Paris, Île-de-France

In-Office

Senior level

Quantum Computing

The Role

Lead AI strategy for quantum systems, design and apply AI/algorithmic methods for qubit calibration, control, and error correction, partner with data engineering to build pipelines, define data requirements, and integrate AI solutions into production workflows while guiding and prioritizing team efforts.

Summary Generated by Built In

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 close to €40 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.

Your role at C12 Quantum Electronics :

As Lead of AI for Quantum Systems, directly reporting to the VP of Software Development, you will define and drive C12’s AI strategy across the quantum computing stack. You will work at the intersection of AI, data, and quantum engineering to accelerate the development of our quantum computing hardware. This role prioritizes AI initiatives across qubit calibration and control, quantum error correction, manufacturing, and quantum chip design. You will ensure AI efforts are tightly aligned with C12’s core quantum roadmap.

Key Responsibilities:

Refine and own the AI4quantum roadmap aligned with C12’s quantum hardware and system roadmap
Lead the design and application of AI and algorithmic methods in collaboration with quantum physicists for qubit calibration, qubit control optimization, quantum error correction, and system level performance improvement
Partner with data engineering to build and scale pipelines for quantum hardware and manufacturing data
Define AI-specific requirements for data quality, labeling, curation, and synthetic data generation to enable robust model training and analysis
Collaborate closely with quantum hardware engineers and software teams to integrate AI solutions into production workflows
Influence prioritization within existing software and data teams to ensure AI critical projects are executed effectively
Provide technical expertise and guidance on AI and algorithmic approaches to teams across C12, while laying the groundwork for future team expansion

About You:

Ph.D. in computer science, mathematics, artificial intelligence or related
Strong background in AI, machine learning, or applied mathematics with a clear interest in quantum technologies
Solid understanding of linear algebra
Able to operate across research and engineering
Collaborative mindset
Clear communicator
Fluency in the English language

Preferred experience :

Experience applying AI or advanced algorithms to hardware intensive or physics driven domains
Exposure to quantum computing concepts (especially qubit control)
Hands on experience with data engineering, large scale data pipelines, or scientific data management
Familiarity with production environments

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)

You should join us if...

You want to contribute to achieving landmark results in quantum computing, making a difference in the emerging quantum technologies

You want to work within a 60-people team with various backgrounds in nanofabrication, quantum electronics, and carbon nanotube science to create a revolutionary quantum computing processor

You want to thrive in an exceptional scientific environment with several industrial and academic partners

You share our values (excellence, scientific integrity, diversity, curiosity, and care) and want to help us define our product-focused culture and ambition to accelerate.

C12 encourages all who feel qualified to apply. Recruitment decisions are based solely on qualifications, skills, knowledge and experience. Applications from women are particularly welcomed.

Top Skills

Ai,Machine Learning,Data Engineering,Large-Scale Data Pipelines,Synthetic Data Generation,Quantum Computing,Qubit Control,Scientific Data Management,Linear Algebra

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The Company

HQ: Paris

54 Employees

Year Founded: 2020

What We Do

C12 is building reliable quantum computers.

The company is a spin-off from ENS launched in January 2020 by twin brothers Matthieu and Pierre Desjardins to supercharge the development of the lab’s promising new quantum technology.

Quantum computing has the potential to change our lives. But frequent errors limit the technology’s viability. We are tackling the fundamental issue: the nature of the hardware itself. We are tapping into the simplest material–carbon–to drive a technological breakthrough in the field. Unlike other quantum computers, we use carbon nanotubes as the fundamental building block of our processor. By combining the power of an ultra-pure material with an easy-to-manufacture semiconductor device, we are building a scalable platform for quantum computing.

Our executive co-founders bring a unique combination of scientific excellence and business skills to the company. Our team is made up of the world’s most accomplished experts in quantum electronics and carbon nanotube science. Our scientific advisors are renowned scientists and pioneers in spin qubits: Dr. Takis Kontos, Dr. Matthieu Delbecq and Dr. Jérémie Viennot.

In June 2021, C12 secured a $10 million seed round with funding from 360 Capital, Bpifrance (Digital Venture Fund), Airbus Ventures, BNP Paribas Développement, and Octave Klaba (OVHcloud), and additional grants from Bpifrance and the Ile-de-France Region.

We are leading quantum’s next material breakthrough, and we are just getting started. Silicon enabled the emergence of classical computing – it’s time for carbon to do the same for quantum !