Jobs at C12

Support day-to-day marketing and communications: manage LinkedIn and X content calendar, create on-brand text and visuals, handle event logistics and media/lab visits, produce blog and website content, design marketing materials, and track performance metrics to inform improvements.

Operate, maintain, and improve cleanroom equipment to support wafer fabrication for R&D and early production. Perform preventive maintenance, troubleshooting, vendor coordination, safety/SOP development, spare parts management, and continuous improvement to ensure uptime and quality in a startup quantum computing lab.

As Head of Sales, you will own revenue growth, structure sales motions, manage complex sales cycles, and develop commercial narratives for a quantum computing company.

Serve as a Senior People Partner advising managers across the company on recruitment, onboarding, performance, development, internal mobility and offboarding. Coach managers through difficult conversations, performance management, team dynamics, and organizational change. Build management practices, design manager onboarding and training, coordinate leadership development, gather feedback to improve people processes, and partner with the Head of Operations on calibration, promotions, engagement and retention.

Design and simulate on‑chip DC, RF and microwave components for qubit control, interfacing and readout; perform EM and circuit simulations; support cryogenic measurements; improve Python-based design repository and simulation workflows; occasionally contribute to mechanical (Fusion 360/SolidWorks) and PCB design.