Senior Cryogenic Engineer, SNSPD Detector Systems at ID Quantique (IonQ), Geneva
Job Description
ID Quantique (IDQ), part of IonQ, is hiring a Senior Cryogenic Engineer for its superconducting nanowire single-photon detector (SNSPD) product line. The focus is next-generation rack-mountable cryogenic platforms: robust, reliable 2 K cryo-systems that can be deployed in IDQ’s own labs and at customer sites, and that stay maintainable as the technology evolves. SNSPDs are among the best single-photon detectors available and are widely used in quantum communication, including QKD.
At a glance
- Role: Senior Cryogenic Engineer
- Team: R&D
- Location: Geneva, Switzerland
- Experience: Master’s degree (PhD preferred) and 5–7+ years in the cryogenic industry
- Posted: 31 March 2026 (still listed)
- Apply: open until filled (re-checked 14 October 2026)
What the role covers
- Lead system-level specification, integration and testing of cryogenic platforms tailored to SNSPD requirements
- Oversee cryogenic subsystems and ensure reliable, deployable 2 K systems
- Design, configure and improve systems with internal teams, subcontractors and external partners
- Provide operational support for existing cryogenic platforms
- Drive integration efforts across multidisciplinary teams and vendors
What ID Quantique is looking for
- A master’s degree (PhD preferred) in applied physics, systems engineering, mechanical engineering or a related field
- 5–7+ years of experience in the cryogenic industry
- Proven experience designing, evaluating and maintaining complex cryogenic systems, including dilution, sorption and 1 K cryostats
- Strong knowledge of cryogenic wiring, sensors, electronics and CAD-based design and manufacturing
- Experience working with cryogenic vendors, subcontractors and external design partners on system integration
Nice to have
- Expertise in fibre or free-space optics
- Experience with superconducting nanowire single-photon detectors
- Experience leading integration projects
Pay and location
IDQ’s posting does not state a salary. The job is in Geneva; check the posting for contract details and Swiss work-permit requirements.
How to apply
Apply through the official ID Quantique job posting. ID Quantique’s posting does not give a closing date, so the role is open until filled; ResearchJobs.in will re-check this listing on 14 October 2026. Check the posting for location and work-authorisation details before you apply.
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Hiring institution: ID Quantique (IonQ)
Official advertisement: job-boards.eu.greenhouse.io
How to prepare for this application
- Review how SNSPDs are cooled and read out, and what limits cryostat hold time, vibration and optical fibre feedthroughs.
- Bring a cryogenic system you designed or maintained, with the problems you solved.
- Explain how you would make a 2 K system rack-mountable and serviceable by non-specialists.
- Mention any optics experience; the posting lists fibre and free-space optics as a plus.
About ID Quantique
ID Quantique (IDQ), now part of IonQ, is a Geneva company known for quantum-safe communication and quantum detection systems. It says its terrestrial and space-based quantum-safe networks are in live operation, and its superconducting nanowire single-photon detectors (SNSPDs) are used in quantum communication, sensing, computing and imaging.
