Mechanical Engineer – Vacuum Opto Mechanical Assembly - 822 in Broomfield, Colorado at Quantinuum

We are seeking a Lead Mechanical Design Engineer in our Broomfield, CO location to apply their skills to the development of our next generation large-scale quantum computers. In this role, you will own the mechanical design of a precision quantum hardware subsystem that physically houses the core of our ion trap quantum computer. This subsystem integrates an ultra-high vacuum chamber, ion trap hardware, precision beam delivery and detection optics, electrical control components, and associated structural, thermal, and alignment features. The work spans early-stage architecture, detailed opto mechanical design, tolerance and stability analysis, hands on prototyping, and iteration alongside physicists, electrical engineers, and systems engineers.

• Lead the mechanical development and deployment of precision, multi-functional, quantum hardware assemblies from early concepts to detailed design to final procurement for next-generation trapped-ion quantum computers.
• Design mechanical interfaces, mounting structures, and housing modules for complex optical, electrical, cryogenic, and vacuum subsystems.
• Design precision environmental control systems.
• Work with subsystem leads and systems engineers to maintain thorough interface control documents (ICDs).
• Derive detailed mechanical subsystem and component requirements from higher-level requirements.
• Maintain thorough, version-controlled CAD models and BOMs.
• Partner with lab validation & integration teams to build and test prototype assemblies.
• Complete FEM models to predict the structural, electrical, thermal, magnetic, and acoustic performance of complex subsystem assemblies.
• Partners with quantum physicists and subsystem leads to optimize optical, electrical, cryogenic, and vacuum subsystem designs.
• Partner with manufacturing team leads to optimize the lead time, SWAP-C, and uptime of subsystems.
• Communicate findings and design proposals to larger technical, management, and executive teams.
• Mentor junior engineers.

• Bachelor’s degree minimum
• 5+ years of 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 preferred.
• 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.
• 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

• 8+ 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 with Onshape, Comsol, and Ansys tools.
• Experience in magnetic field simulation and magnetic coil design.
• 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:

Incentive Eligible – Range posted is inclusive of bonus target

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.

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