Senior Cryogenic Engineer

Overview

IonQ is seeking a Senior Cryogenic Engineer to support and develop advanced cryogenic platforms for its Superconducting Nanowire Single-Photon Detector product line, with a focus on next-generation rack-mountable systems. The position is based in Geneva, Switzerland, within the Europe region. The role involves working with a cross-functional team to advance quantum technologies across computing, networking, and sensing, playing a central part in the development lifecycle by overseeing cryogenic subsystems and ensuring reliable 2K cryo-systems for internal and customer environments.

What you get

Selected candidates will join a leading quantum platform company engaged in integrated quantum solutions. Employment includes comprehensive medical, dental, and vision plans, a matching 401(k), unlimited paid time off and paid holidays, parental and adoption leave, legal insurance, and a home technology stipend. Visa sponsorship may also be offered for suitable candidates.

Requirements

Applicants must hold a Master’s degree, with a PhD preferred, in applied physics, system engineering, mechanical engineering, or a related field, alongside five to seven or more years of experience in the cryogenic industry. Candidates need proven experience in designing, evaluating, and maintaining complex cryogenic systems, which includes dilution, sorption, and 1K cryostats. Strong knowledge of cryogenic wiring, sensors, electronics, and computer-aided design and manufacturing processes is required, as well as experience collaborating with cryogenic vendors, subcontractors, and external design partners on system integration. Desirable expertise includes fiber or free-space optics, superconducting nanowire single-photon detectors, and leading integration projects. Additionally, employment is contingent on immigration status verifications required for export control and compliance purposes.