C12 develops reliable & application-specific quantum computers, to solve highly complex computing tasks, currently out of reach of even most powerful supercomputers. Building a quantum computer still needs innovators ready to tackle exciting challenges. C12's founders are convinced that only a new material for the qubit will bring a technological breakthrough. C12 uniquely uses carbon nanotubes as the fundamental building blocks of its quantum processor. This high-purity material minimises errors, radically improves performance and reduces hardware overhead for fault-tolerant computing. Combined with well-established semiconductor techniques, carbon nanotubes will help scale quantum computing, just as silicon revolutionised classical computing. Founded in 2020, C12 is a fast-growing start-up, who recently raised EUR 18 million in 2024 to further its research in its own lab in the heart of Paris (Panthéon).

Your role at C12 Quantum Electronics

• As the Senior Technical Writer, you will play a critical role in documenting and communicating our cutting-edge technology to stakeholders, funding bodies, and collaborators.


Your responsibilities include:

• Leading the preparation of technical documents for industrial projects and grant applications, ensuring compliance with funding body requirements
• Writing detailed project reports, including progress updates, technical summaries, and outcome analyses
• Developing high-quality proposals to secure public and private funding for R&D initiatives
• Working closely with scientists, engineers, and project managers to gather, synthesise , and present complex technical information
• Coordinating with the Finance and R&D teams to align documentation with budgetary and technical objectives
• Developing and maintaining templates, guidelines, and databases to streamline the documentation process
• Tracking deadlines for project deliverables and ensure timely submission of reports and applications
• Translating complex technical concepts into clear, accessible language for diverse audiences, including funders, partners, and non-specialists
• Preparing executive summaries and presentation materials for stakeholders and review panels.
• Identifying and implementing best practices to enhance the clarity, accuracy, and impact of technical documents.

About you:

• You have academic or industry experience in Physics.
• You have a minimum of 5 years in technical writing or grant application writing, ideally in fields related to quantum computing, nanotechnology, or advanced materials
• Experience in physics-related press publications is considered a plus
• You have exceptional written and verbal communication skills in both French and English
• You have proven ability to understand and clearly articulate complex technical concepts
• You are familiar with document creation, editing, and management tools
• You are meticulous with excellent organisational skills

You should join us if...

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 40-people team 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.

C12's Quantum Electronics' unique technology

At C12, a qubit, the fundamental functional unit of a quantum computer, is built from an isotopically ultra-pure 12C nanotube suspended above a silicon chip containing control electrodes and a quantum communication bus. Our spin qubits hold great promises in terms of individual control and manipulation as well as for the circuit architecture. A suspended isotopically pure 12C nanotube holds great promises in terms of stability, as it reduces all sources of decoherence (charge noise, nuclear spin noise, phonon relaxation).

C12 encourages all who feel qualified to apply. Recruitment decisions are based solely on qualifications, skills, knowledge and experience. Applications from women are particularly welcomed.