Senior Software Engineer at C12 Quantum Electronics | FR | Rezi

Senior Software Engineer at C12 Quantum Electronics

Senior Software Engineer

C12 Quantum Electronics · FR

6 days ago

Senior Software Engineer

C12 Quantum Electronics · FR

7 days ago
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About the Role

As a Senior Software Engineer, you will be at the forefront of shaping the future of quantum measurement and help build the framework that runs experiments on quantum computers. Your expertise will drive the development of innovative solutions that bridge the gaps between R&D and engineering, enabling breakthroughs in quantum technology.

Responsibilities

  • Lead the design and development of our core quantum measurement software framework, ensuring high performance and long-term maintainability.
  • Partner with R&D and other engineering teams 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.
  • Comfortable working with Python as a primary language; eager to master the ecosystem if coming from another background.
  • Familiarity or comfort working with message brokers (e.g., RabbitMQ, ZeroMQ, Kafka) and relational databases (PostgreSQL), SQLAlchemy, etc.
  • Prior experience with orchestration tools like Prefect or Airflow is a strong plus.
  • A background in physics, engineering, or another quantitative field is a strong plus.
  • Curious, adaptable, and ready to discover new languages/frameworks/APIs.
  • A problem solver that tries to use the best tool for the job.
  • Communicate clearly in English and work well in collaborative development environments.

Skills

  • Python
  • Message brokers (RabbitMQ, ZeroMQ, Kafka)
  • Relational databases (PostgreSQL)
  • SQLAlchemy
  • Orchestration tools (Prefect, Airflow)

Location

  • Paris

Work Type

  • Full-time

Experience Level

  • Senior

Education Level

  • PhD (implied by team composition)

Salary/Compensations

  • 60,000 euros - 78,000 euros

Benefits

  • 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..)

About the Company

  • Founded in 2020, C12's mission is to be at the center of one of the biggest technological breakthroughs of the century and change the course of history by building a universal quantum computer.
  • C12 believes that achieving a true breakthrough in quantum computing requires rethinking the fundamentals, using carbon nanotubes as the building blocks of quantum processors to reduce error rates, boost performance, and minimize hardware overhead.
  • The company has raised over €25 million in funding, published 11 scientific papers, and secured 8 patents.
  • The fast-growing team of 80+, including 25 PhDs, has over 26 nationalities represented.
  • C12 has cutting-edge lab spaces in Paris' historic Panthéon district.
  • The company offers a unique environment to grow, learn, and innovate for those passionate about shaping the future of quantum technology.

Equal Opportunity

  • 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!