Quantum Cryogenic Thermal Systems Engineer — Paris Lab

C12; Paris; On-site; EUR 65,000 - 78,000; Full time

Benefits offered by this job

Stock options

Conference trips

Dynamic international team

Meal vouchers

Mental health support

Training budget

Sabbatical after 2 years

Paris office spaces

Job summary

C12 Quantum Electronics in Paris is seeking a Thermal Modeling & Cryogenic Systems Engineer (Quantum Hardware). You will own the thermal architecture of complex cryogenic quantum systems, ensuring scalability, stability and performance while collaborating with quantum physicists and engineers.

You will develop system-level models, manage thermal budgets, and validate predictions with measurements. The role blends cryogenics, thermal physics, electronics and software in an international

Qualifications

• PhD in Mechanical Engineering, Physics, Cryogenics or a Masters with 5+ years in industry.
• Strong background in thermal engineering and cryogenics.
• Experience building and maintaining thermal models to guide design decisions.
• Cross-disciplinary collaboration with quantum hardware and systems teams.
• Hands-on with dilution refrigerators and multi-stage cryogenic platforms.
• Experience validating models with measurements and data analysis.
• Programming or scripting for data analysis (Python, Matlab).

Responsibilities

• Develop and maintain system-level thermal models for quantum hardware.
• Work with engineers and physicists to identify thermal bottlenecks and guide design.
• Own the thermal budget and perform trade-offs between architectures.
• Validate thermal models with experiments and measurements.
• Design thermalization strategies for signals and cryo-electronics.
• Support integration and operation of cryogenic test platforms.
• Document assumptions, models, and design rules for product development.

Skills

Thermal modeling

Cryogenics

Python

Matlab

Data analysis

Thermal budgets

RF wiring

Education

PhD in Mechanical Engineering

PhD in Physics

PhD in Cryogenics

Master's degree

Tools

Cryogenic test platforms

Job description

C12 Quantum Electronics in Paris is seeking a Thermal Modeling & Cryogenic Systems Engineer (Quantum Hardware). You will own the thermal architecture of complex cryogenic quantum systems, ensuring scalability, stability and performance while collaborating with quantum physicists and engineers.

You will develop system-level models, manage thermal budgets, and validate predictions with measurements. The role blends cryogenics, thermal physics, electronics and software in an international