Staff Cryogenic Engineer — Quantum Memory Systems

IonQ, Inc.; Boston (MA); On-site; USD 152,000 - 190,000; Full time

Job summary

IonQ, Inc. is seeking a Staff Cryogenic Engineer in Boston to lead the development of cryogenic subsystems for diamond‑based photonic interconnects in IonQ quantum processors.

You will advance R&D scale subsystems, ensure reliability, and deploy robust cryogenic elements across IonQ sites and customer sites. You will help mature cryogenic wiring, sensors, heaters, and UHV techniques while collaborating with cross‑functional teams to integrate these systems into scalable, manufacturable

Qualifications

• Masters in physics, applied physics, mechanical engineering, or closely related field.
• 7+ years of experience in cryo industry.
• Experience designing and evaluating performance of complex cryogenic systems.
• Experience with operating and maintaining dilation, sorption, 1K cryostats.
• Experience with cryogenic wiring, sensors, and heaters.
• Experience with UHV systems in cryogenic environment: pumping, leak detection, sealing and joining techniques
• Experience with CAD systems and manufacturing

Responsibilities

• Customize commercially available cryostats for quantum memory-specific needs
• Work with vendors to design and configure deployable cryogenic systems
• Work with IonQ internal teams to improve the current cryogenic platforms
• Provide operational support for the current fleet of cryostats

Skills

Cryogenic engineering

Cryogenic systems design

CAD design

Vendor interaction

Cryogenic instrumentation

Education

Masters in physics / applied physics / mechanical engineering

PhD in physics / applied physics / mechanical engineering

Tools

CAD software

Cryogenic testing equipment

Job description

IonQ, Inc. is seeking a Staff Cryogenic Engineer in Boston to lead the development of cryogenic subsystems for diamond‑based photonic interconnects in IonQ quantum processors.

You will advance R&D scale subsystems, ensure reliability, and deploy robust cryogenic elements across IonQ sites and customer sites. You will help mature cryogenic wiring, sensors, heaters, and UHV techniques while collaborating with cross‑functional teams to integrate these systems into scalable, manufacturable