C12 Quantum Electronics

Join C12's core software team in Paris as a Senior Software Engineer. Develop tools and maintain the quantum emulator Callisto to support groundbreaking R&D. Leverage 5+ years of experience in a dynamic role involving Python, APIs, and cloud tech. Enjoy stock options, global conferences, and a vi...

Join C12 in Paris as a Research Engineer in Low Temperature Electronics. You will develop and operate cryogenic instruments to characterize carbon nanotube devices using DC and RF methods. This role combines Python programming with hands-on experimental lab work and hardware design. We offer stoc...

Lead the Qubit Control team at a cutting-edge quantum computing company in Paris. You will manage and grow a team of physicists, optimizing qubit gate performance on advanced quantum chips. This role requires 5+ years of technical leadership experience and a strong physics or engineering backgrou...

Join our HR team in Paris as an HR Intern, reporting directly to the HR Manager. You will support scalable HR practices, onboarding, and daily operations in a dynamic, international environment. This 5-6 month internship offers great office spaces, Swile vouchers, and a vibrant culture.

Lead the Finance function for a fast-scaling quantum startup in Paris. You will secure funding, strengthen FP&A, and build a scalable finance stack. The role requires 6+ years in strategic finance and fluency in English and French. Partner with the executive team to drive growth and manage all fi...

Join C12 in Paris as an R&D Intern to help build quantum computers solving problems beyond supercomputers. Utilize your MSc/MEng and 6+ months of experience in a hands-on role operating apparatus and developing new setups. This is a unique opportunity to learn in an exceptional scientific environ...

Join C12 in Paris to pioneer quantum computing architecture. Design a 5-qubit chip with all-to-all connectivity for spin qubits. Requires a PhD and 2+ years in microwave electronics/qubit measurement. Lead experiments to enhance gate fidelities in a cutting-edge R&D role.

Join C12 in Paris to pioneer quantum computing hardware as an RF Engineer. Utilize your 5+ years of experience in RF/microwave design, electromagnetic simulation (HFSS, COMSOL), and Python to develop on-chip circuits for qubit control. You will optimize scalable architectures for 100+ qubits, wor...

Lead strategic partnerships at C12, a pioneer in carbon nanotube quantum computing, based in Paris. Leverage 5+ years of experience in HPC, cloud, or quantum to drive alliances with key ecosystem players. Shape the future of quantum technology while enjoying a competitive salary and equity package.

Join C12 in Paris as a Research Engineer to pioneer quantum computing with carbon nanotubes. You will design CVD experiments, optimize growth parameters, and scale the process to enhance qubit fidelity. We seek a detail-oriented physicist or engineer passionate about lab work and rapid prototypin...

Join our Paris team as a Nanofabrication Engineer. You will fabricate advanced printed circuit chips for quantum computing in a cleanroom environment. A Master's or PhD in a relevant field and hands-on experience with multi-step nanofabrication, including photolithography, are essential. This rol...

Join C12 in Paris to engineer the future of quantum computing. As a Quantum Measurement Engineer, you will characterize spin qubit devices in carbon nanotubes and develop coherent control protocols. This role requires expertise in cryogenic measurements, quantum dot characterization, and Python. ...