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Quantinuum Ltd.

Principal Cryogenic Vacuum Engineer - 581

Quantinuum Ltd., Broomfield, Colorado, United States, 80020

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We are seeking a Principal Cryogenic Vacuum Engineer in our Broomfield, CO, location to apply their skills to the development of our next‑generation large‑scale quantum computers. The Ideal candidate will have a thorough understanding of cryogenic design principles and technical strategy. The candidate should also have a solid understanding of ultra‑high vacuum systems, feedthroughs, CAD, thermal modeling, and prototyping. This diverse set of topics will be used to create a state‑of‑the‑art design for a commercial quantum computer that advances key performance metrics in qubit count, run‑time, and circuit fidelity.

Key Responsibilities:

Lead the architecture team to develop producible, scalable quantum computers from the perspective of cryogenic and vacuum engineering

Apply mechanical design tools to rapidly design, prototype, and deliver cryogenic/ extreme high vacuum (XHV) systems that meet the evolving needs of customers

Mentor junior engineers

Oversee the building and validation of system and subsystem prototypes

Work closely with a small, cross‑functional design team to rapidly conceptualize, validate and deliver high reliability cryogenics and XHV systems

Define system level requirements and high‑level sub‑system and technology requirements

Work with subsystem teams to identify potential technology insertions into the architecture

Interact with cryogenic team to co‑design large‑heat‑lift cooling systems

Communicate findings and design proposals to larger technical, management, and executive teams

Generate and present XHV and cryogenic sub‑system design trade studies and analysis.

YOU MUST HAVE:

Bachelors degree minimum

Minimum of 12 years’ experience involving one or more of the following areas: cryogenic system design, vacuum systems, thermal modeling, qubits, atomic physics, spectroscopy, optics, electronics, or laboratory work in the physical sciences.

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:

15 years’ experience in scientific research and development, engineering, or leadership roles

Experience leading a team in designing or operating cryogenic and/or XHV systems

Strong organizational and leadership skills, and experience in working with customers and partners

Experience performing simulation and modeling to inform experiments

Experience with control systems for data collection, signal processing, and analysis

Experience with electrical and fiber optic feedthroughs

Experience with extreme‑high vacuum environments

Experience with trapped ions and ion transport

Excellent written and oral communication skills, with published results within their field of research

Compensation & Benefits: $173,000 - $217,000 a year

Incentive Eligible – Range posted is inclusive of bonus target when applicable

The pay range for this role is $173,000 – $217,000 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.

As we celebrate the International Year of Quantum, there has never been a more exciting time to be part of this rapidly evolving field. 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 is 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, affectionate or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status. Know Your Rights: Workplace discrimination is illegal

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