C12

www.c12qe.com

2 Jobs

67 Employees

About the Company

C12 is building useful quantum computers by crafting the highest quality qubits using ultra-pure materials and perfected processes to control every individual electron.

Launched in 2020 by twin brothers Matthieu and Pierre Desjardins, C12 is a spin-off of the Physics Laboratory at the Ecole Normale Superieure in Paris. We are pioneering a new approach to quantum computing--using carbon nanotubes to create ultra-pure qubits, enabling better control, reduced noise, and a scalable hardware platform.

In June 2024, we raised EUR18 million in our second funding round, backed by Varsity, EIC Fund, Verve Ventures, and existing investors including 360 Capital, Bpifrance Digital Venture, and BNP Paribas Developpement. This follows a $10M seed round in 2021. With this support, we aim to demonstrate high-fidelity entanglement between distant spin qubits--a key step toward building large-scale, fault-tolerant quantum processors.

We have also inaugurated the Quantum Fab, our dedicated quantum production line in central Paris, and launched industrial collaborations across chemistry, optimization, and defense. Today, C12 operates from two offices on either side of the Pantheon, including a new space opened in 2025 to support our growing team.

C12 currently employs over 50 people across 20 nationalities, including 22 PhDs, all working towards one mission: to lead the next materials leap in quantum computing.

Silicon powered classical computing. It's time for carbon to do the same for quantum.

Listed Jobs

Company Name: C12
Job Title: Ingénieur de Sécurité Senior
Job Description: **Job Title:** Senior Security Engineer **Role Summary:** Lead the protection of C12’s information systems while overseeing internal IT infrastructure. Collaborate with software development, conduct security audits, manage risk, and drive incident response and continuous improvement initiatives. **Expectations:** - Minimum 5 years of experience in information‑system security and IT operations. - Proven track record managing audits, risk assessments, and cross‑functional security initiatives. - Strong organizational and communication skills; bilingual in English and French. **Key Responsibilities:** - Support the software development lead in defining and reporting security objectives for information systems. - Participate in compliance audits and respond to client/partner security questionnaires. - Conduct risk analyses, coordinate penetration testing, and manage vulnerability remediation. - Plan and deliver phishing awareness campaigns and security training sessions. - Contribute to business continuity and disaster recovery plans (PCA/PRS). - Manage security incidents, coordinate the cyber‑security committee, and maintain the security reference framework. - Oversee hardware (PCs, servers, network devices), network infrastructure, VPNs, and remote access. - Recommend and implement solutions to optimize internal IT management. - Supervise system and application updates to ensure security and performance. **Required Skills:** - Information‑security expertise with knowledge of ISO 27001/27002 and risk‑management best practices. - Experience with vulnerability management, penetration testing, and incident response. - Network security fundamentals and hardware management (PCs, servers, routers, switches). - Strong planning, organizational, and problem‑solving abilities. - Excellent verbal and written communication; client‑service orientation. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Information Security, or a related field. - Preferred certifications: CISSP, CISM, ITIL, Microsoft or equivalent. ---

Company Name: C12
Job Title: Quantum Measurement Engineer (Entry Level / Internship )
Job Description: **Job Title** Quantum Measurement Engineer (Entry Level / Internship) **Role Summary** Assist the Quantum Measurement Team in developing, calibrating, and operating measurement and control systems for carbon‑nanotube based quantum processors. Provide data acquisition support, software scripting, and troubleshooting to enable accurate characterization of quantum devices. **Expectations** - Recent graduate or final‑year student in engineering, physics, or related field. - Willingness to learn new measurement tools and upgrade existing systems. - Strong initiative, detail orientation, and proactive problem‑solving in a collaborative research environment. - Effective communication in English, both oral and written. **Key Responsibilities** 1. Collaborate with senior engineers to design and build measurement setups for quantum devices. 2. Develop and maintain Python scripts for data acquisition, signal processing, and automated experiment control. 3. Perform routine calibration and maintenance of measurement hardware (e.g., lock‑in amplifiers, oscilloscopes, RF source). 4. Collect, process, and analyze measurement data, preparing clear reports and visualizations. 5. Troubleshoot hardware and software issues, proposing and implementing corrective actions. 6. Document measurement procedures, results, and lessons learned in standard formats. 7. Support the integration of new measurement technologies and protocols into existing workflows. **Required Skills** - Python programming (data handling, automation, basic visualization). - Fundamentals of electrical measurement and signal conditioning. - Basic signal‐processing concepts (filtering, Fourier analysis). - Knowledge of laboratory instrumentation (oscilloscopes, spectrum analyzers, signal generators). - Analytical mindset with strong quantitative skills. - Excellent written and verbal communication in English. - Ability to work effectively in a multidisciplinary team. **Required Education & Certifications** - Master’s degree (or final‑year undergraduate) in Engineering, Physics, Quantum Engineering, or Electrical Engineering. - No specific certifications required; coursework or projects involving quantum computing, nanofabrication, or signal processing is a plus.