Senior Software Engineer

Responsibilities

• Lead the design and development of our core quantum measurement software framework, ensuring high performance and long-term maintainability
• Partner with our R&D and other engineering teams at C12 to translate complex experimental requirements into robust, scalable software solutions
• Define and document the unified architecture for instrument control, high-throughput data storage, and measurement orchestration to support framework growth
• Champion rigorous software practices, including comprehensive code reviews, proactive design discussions, and robust CI/CD and automated testing pipelines
• Take ownership of the full software lifecycle, delivering robust, secure, and scalable solutions that meet the rigorous demands of quantum R&D
• Cultivate a culture of continuous learning by mentoring junior engineers and leading by example in code quality and system design

Requirements

• 5+ years of experience building robust backend systems or data-intensive applications
• You are comfortable working with Python as a primary language; if coming from another background, you are eager to master the ecosystem
• You’re familiar or
• comfortable working with message brokers
• (e.g., RabbitMQ, ZeroMQ, Kafka)
• and relational databases
• (PostgreSQL), SQLAlchemy, etc

Prior experience with orchestration tools like

• A background in physics, engineering, or another quantitative field is a strong plus
• You are curious, adaptable, ready to discover new languages/frameworks/apis
• A problem solver that tries to use the best tool for the job
• You communicate clearly in English and work well in collaborative development environments

You have

Prefect or Airflow is a strong plus

What we offer

• 60,000 euros - 78,000 euros yearly base salary
• Stock options for every employee (BSPCE/ESOP)
• Sponsored trip to conferences around the world
• A highly dynamic international team
• Swile meal vouchers
• Mental health support with moka.care
• Training budget/ Annual Learning & Development Allowance

Sabbatical leave (after 2 years in the company)

• Vibrant office culture (two office spaces in the heart of Paris, team lunches, offsite events, Friday breakfasts..)
• You should join us if...

You like hands-on work and technology

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 team of 80+ people 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

We still encourage even if you don’t meet all the requirements. Rest assured, we are committed to finding the right fit for our team and are open to adjusting compensations based on skills and experiences.

Applications from women are especially welcomed!