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Software Engineer

Saint-Germain-en-Laye, France

Job Type

CDI - Hybrid

About the Role

Our client is looking for their first Software Engineer, who will build the foundations of our data-acquisition workflows, database architecture, and will develop their first simulation tools to model how their product impacts the performance of quantum operations. In this role, you will work hand-in-hand with their RF and quantum engineers on highly technical, high-impact projects. This is a rare opportunity to enter the quantum-computing world at a pivotal moment and to contribute directly to the growth of a fast-moving deep-tech startup.

Requirements

  • Minimum 5 ans d'expérience

  • Full-stack avec forte dominante frontend (React ou Vue)

  • Anglais bilingue obligatoire

  • Une expérience en startup (construction from scratch)

  • Compte rendu suite au questionnaire technique


Le candidat

  • True jack-of-all-trades engineer, comfortable across both back-end and front-end

  • Motivated by the opportunity to join an ambitious team pushing the boundaries of hardware and helping unlock a new era of scalable quantum computing

  • 5Y+ experience with modern front-end frameworks

  • Strong software engineering fundamentals

  • Strong proficiency in Python for scientific computing, simulation development, and data pipelines

  • Experience with back-end development and designing databases

  • Previous experience with time-series data stores and observability tools

  • Master’s degree (M2) in Computer Science or Engineering (Bonus)

  • Experience in connecting software to real hardware (instrumentation APIs, drivers, or data acquisition workflows) (Bonus)

  • Ability to use AI assisted coding tools (Bonus)

  • Familiarity with data-visualization libraries (Bonus)

  • Proficiency in French (Bonus)

  • Autonomous, ambitious, organized

  • Hands-on builder; not afraid to draft from a white page: complete setups, scripts, processes, etc.

  • Engineer’s mindset with meticulous attention to details and a systematic approach to problem-solving

  • Values transparency and open communication; enjoys constructive challenge

  • Eager to learn and grow; recognizes the strength of teamwork

  • Thrives in an environment of high expectations


Compétences techniques

  • React (prioritaire)

  • Vue (prioritaire)

  • Svelte (prioritaire)

  • CI/CD

  • Testing

  • Documentation

  • Git

  • Python

  • Scientific computing

  • Node.js

  • FastAPI

  • Flask

  • Django

  • Postgres

  • MySQL

  • InfluxDB

  • Grafana

  • Instrumentation APIs

  • Drivers

  • Data acquisition workflows

  • Cursor

  • D3

  • Plotly

  • ECharts


Perspectives d'évolution

  • A unique opportunity to shape the technological direction of a cutting-edge start-up.

  • A collaborative, mission-driven culture with a focus on personal and professional growth.


Suppléments

  • Competitive salary and equity package.

About the Company

Our client is building the future of computing in hardware, not just in theory. They enable quantum computing at scale by developing superconducting circuit solutions that increase qubit count by more than 100x without increasing the cost or size of infrastructure. Their culture is defined by open knowledge sharing, constructive challenge of ideas, and a relentless focus on what matters.

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