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C12 Tech Stack

Spin-qubit quantum processor manufacturer with nanofabrication production capability

Computer Hardware Manufacturing Paris 51–200 employees Founded 2020 Privately Held

C12 manufactures quantum processors using spin qubits and proprietary nanomaterials, operating a production line for quantum chips in Paris. The engineering-heavy hiring mix (12 roles) paired with active R&D on error correction and multi-qubit experiments reflects a hardware-stage company scaling from prototype toward commercial deployment. Security and compliance infrastructure (penetration testing, incident response, classified-data management) appears disproportionately mature for a 55-person startup, likely driven by IP sensitivity and industrial customer requirements.

Tech Stack 13 technologies

Core StackPython Intune BambooHR AWS Linux Docker Kubernetes Windows macOS Kandji Microsoft 365 OVH Bash

What C12 Is Building

Challenges

  • Reducing error rates
  • Scaling quantum processors
  • Minimizing hardware overhead
  • Managing classified information access
  • Pioneering systems engineering methods in quantum computing
  • Incident response
  • Scalable fault-tolerant quantum computing
  • Scaling it infrastructure
  • Maintaining security compliance
  • Extending runway

Active Projects

  • Quantum measurement
  • Revolutionary quantum computing processor
  • Multi-qubit experiments with spin qubits
  • Quantum error correction ai initiatives
  • Penetration testing
  • Phishing awareness campaigns
  • Business continuity planning
  • Benchmark qubit gate fidelities
  • Cybersecurity initiatives
  • It onboarding process improvement

Hiring Activity

Steady20 roles · 8 in 30d

Department

Engineering
12
Research
3
Security
3
Finance
1
HR
1
Ops
1
Sales
1

Seniority

Senior
8
Mid
5
Intern
3
Junior
2
Manager
2
Director
1
Lead
1
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About C12

C12 is a quantum hardware startup founded in 2020 and based in Paris, designing and manufacturing quantum processors built on spin-qubit architecture. The company operates a proprietary quantum chip production line and has delivered devices with record performance metrics. Revenue is generated through partnerships with industrial companies seeking to evaluate quantum computing applications for computationally intensive problems. The founding team includes 25 quantum scientists, with a total headcount of 55 across engineering, research, security, and operations functions. The company has raised over €25M in equity funding to date.

HeadquartersParis
Company Size51–200 employees
Founded2020
Hiring MarketsFrance

Frequently Asked Questions

What is C12's quantum computing approach?

C12 manufactures quantum processors using spin-qubit technology and proprietary nanomaterials, with an operational production line for quantum chips. The company is advancing multi-qubit experiments and quantum error correction AI to scale processor performance.

Where is C12 headquartered and how large is the team?

C12 is headquartered in Paris, France, with 55 employees including 25 quantum scientists. The company was founded in 2020 and remains privately held.

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