C12
c12qe.com
Actively hiring
Materials Science & Nanotechnology
Semiconductors
Hardware
Science & Engineering
Quantum Science & Computing
Quantum Computing Hardware
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Growth
Jobs
Financials
Overview
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.
Technologies
Tech DNA
Python
MATLAB
LangGraph
LangChain
OVHcloud
LLM
AI/ML
Python
MATLAB
Ansible
Configuration Management
Docker
OVHcloud
LangGraph
LLM
Model Context Protocol
Ollama
Prefect
Prompt Engineering
RAG
vLLM
LangChain
AI Agents
Other
Rest-Assured
Google Workspace
n8n
Ansys HFSS
Keysight ADS
Stack modernity
74/100
How modern this stack is, based on technology relevance, AI adoption and the share of legacy tools.
In-demand technologies
Python
5 jobs
Required
$74k
-59% vs market
Rest-Assured
3 jobs
Optional
$90k
Median
LangGraph
2 jobs
Required
$58k
-67% vs market
LangChain
2 jobs
Required
$58k
-67% vs market
Ansible
2 jobs
Required
$58k
-64% vs market
Model Context Protocol
2 jobs
Required
$58k
-71% vs market
vLLM
2 jobs
Required
$58k
-76% vs market
Prefect
2 jobs
Required
$58k
-71% vs market
Salary medians are calculated from this company's open jobs and compared with the market.
Industry adoption
Python
18%
Docker
11%
LLM
8%
AI Agents
6%
MATLAB
5%
Ansible
5%
Share of companies in the same industry that use each technology.
Stack changes
AI Agents
Aug 2026
n8n
Aug 2026
MATLAB
Aug 2026
Keysight ADS
Aug 2026
Ansys HFSS
Aug 2026
LangChain
Aug 2026
vLLM
Aug 2026
RAG
Aug 2026
Technologies recently added to or removed from this company's stack - a signal of tech migrations and new initiatives.
Weekday
Jobgether
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NVIDIA
Devoteam
Salary insights
Compensation ranges based on this company's open jobs
Median
$90k
Typical range
$58k – $90k
Open positions
3
1
Jobs
Senior
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 1 | $90k | $90k |
Highest paying role
Senior Quantum RF Engineer
$90k
Normalized to USD per year
Growth
Hiring Momentum
65/100
Growing
Open positions
7
1 opened / 0 closed in 30 days
Median time-to-fill
74 days
faster than 21% of the market
ATS activity
Every ~2 days
08/31/2026
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Quantum
75% ▼
AI/ML
25% ▲
Activity Timeline
Added MATLAB to stack
Aug 2026
Added Keysight ADS to stack
Aug 2026
Added Ansys HFSS to stack
Aug 2026
Added LangChain to stack
Aug 2026
Added vLLM to stack
Aug 2026
Added RAG to stack
Aug 2026
Added Prompt Engineering to stack
Aug 2026
Added Prefect to stack
Aug 2026
Added OVHcloud to stack
Aug 2026
Added Ollama to stack
Aug 2026
Added Model Context Protocol to stack
Aug 2026
Added LLM to stack
Aug 2026
Jobs
AI Automation Engineer
14 days ago$53k – $58k per year • Equity • In office • Full-Time • PhD • Paris
Python
LangGraph
LLM
Model Context Protocol
Ollama
Prefect
Prompt Engineering
RAG
vLLM
LangChain
AI Agents
DevOps
Ansible
Configuration Management
Docker
OVHcloud
Management
Google Workspace
n8n
QA
Rest-Assured
Apply
≈ $74k – $176k per year (Estimated) • In office • Full-Time • Paris
Python
LangGraph
LLM
Model Context Protocol
Ollama
Prefect
Prompt Engineering
RAG
vLLM
LangChain
AI Agents
DevOps
Ansible
Configuration Management
Docker
OVHcloud
Management
Google Workspace
n8n
Apply
$70k – $91k per year • Equity • In office • Full-Time • Bachelor's Degree • Paris
Rest-Assured
Apply
$77k – $91k per year • Equity • In office • Full-Time • Master's Degree • Paris
MATLAB
Python
Ansys HFSS
Keysight ADS
QA
Rest-Assured
Apply
≈ $46k – $112k per year (Estimated) • In office • Full-Time • Master's Degree • Paris
Python
Apply
Remote/Hybrid • Full-Time • Paris
Apply
In office • Full-Time • Master's Degree • Paris
Python
Apply