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Posted July 10, 2026

Experimental Cryogenic Physicist -743

Quantinuum
Broomfield, Colorado, United States 80020 Full Time
Reference: 285735639

Experimental Cryogenic Physicist -743

We are seeking an Experimental Cryogenic Physicist in our Broomfield, CO, Location to support the development, integration, and operation of advanced cryogenic systems for quantum computing hardware. This is a cryogenics-focused role with strong overlap into experimental physics, requiring hands-on experience with laboratory systems, cryogenic infrastructure, device characterization, data collection, and performance analysis.

All applicants for placement in safety-sensitive positions will be required to submit to a pre-employment drug test.

Key Responsibilities:

  • Design and develop cryogenic systems, including refrigeration and liquefaction systems, cryostats, and cryogenic storage solutions.

  • Apply experimental physics, thermodynamics, heat transfer, and fluid dynamics principles to optimize cryogenic system performance in quantum systems.

  • Conduct research to develop new cryogenic technologies and improve existing systems.

  • Stay current with advancements in cryogenics, quantum hardware, and low temperature physics.

  • Perform simulations and experiments to test cryogenic equipment and systems.

  • Analyze data and ensure systems meet performance and safety standards.

  • Present findings and project updates to stakeholders and management.

  • Collaborate with cross-functional teams to integrate cryogenic systems into various projects. Work closely with other engineers, scientists, and technical staff to achieve project objectives.

  • Liaise with suppliers, manufacturers, and external contractors as needed.

  • Contribute to R&D projects aimed at improving cryogenic processes and applications.

  • Installation, commissioning and troubleshooting of control instrumentation, control systems and/or quantum hardware.

  • Ability to travel up to 10%

YOU MUST HAVE:

  • PHD completed prior to starting

  • Minimum 4+ years’ experience (PhD inclusive) involving one or more of the following areas: atomic physics, precision spectroscopy, optics, vacuum systems, electronics, cryogenics, or laser

  • Due to Contractual requirements, must be a U.S. Person defined as, U.S. citizen permanent resident or green card holder, workers granted asylum or refugee status.

  • Due to national security requirements imposed by the U.S. Government, candidates for this position must not be a People's Republic of China national or Russian national unless the candidate is also a U.S. citizen.

WE VALUE:

  • PhD completed prior to starting in Physics, Applied Physics, Mechanical engineering, Chemical Engineering, Electrical Engineering or a closely related field.

  • Strong understanding of engineering principles, thermodynamics, and heat transfer.

  • Proficiency in controls software for controls systems and/or CAD software for system design and modeling.

  • Knowledge of safety protocols and regulations pertaining to cryogenic materials.

  • Experience with design or operation of a device for quantum information processing

  • Experience with trapping of ions or neutral atoms

  • Experience performing simulation and modeling to inform experiments

  • Excellent problem-solving skills and ability to troubleshoot complex systems.

  • Familiarity with helium liquefaction and recovery processes.

  • Advanced certifications or training in cryogenics.

Compensation & Benefits:

The pay range for this role is $132,000 – $165,000 annually. Actual compensation within this range may vary based on the candidate’s skills, educational background, professional experience, and unique qualifications for the role.

Quantinuum is the world leader in quantum computing. The company’s quantum systems deliver the highest performance across all industry benchmarks. Quantinuum’s over 650 employees, including 400+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution.
By uniting best-in-class software with high-fidelity hardware, our integrated full-stack approach is accelerating the path to practical quantum computing and scaling its impact across multiple industries.
By joining Quantinuum, you’ll be at the forefront of this transformative revolution, shaping the future of quantum computing, pushing the limits of technology, and making the impossible possible.
What’s in it for you?
A competitive salary and innovative, game-changing work
Flexible work schedule
Employer subsidized health, dental, and vision insurance
401(k) match for student loan repayment benefit
Equity, 401k retirement savings plan + 12 Paid holidays and generous vacation + sick time
Paid parental leave
Employee discounts
Quantinuum is an equal opportunity employer. You will be considered without regard to age, race, creed, color, national origin, ancestry, marital status, affectional or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status. Know Your Rights: Workplace discrimination is illegal
Applications will be accepted on an ongoing basis, there is no application deadline for this position.

$132,000 - $165,000 a year



Equal employment opportunity, including veterans and individuals with disabilities.

PI285735639

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