Cryogenics Engineer

Maybell Quantum Industries; Denver (CO); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Equity

Performance bonus

Medical, dental, and vision insurance

401(k)

Job summary

Maybell Quantum Industries is seeking a qualified cryogenic systems engineer to design test plans, run and troubleshoot advanced cryogenic setups, and drive product improvements. You will work with our R&D teams in Denver to ensure safety, uptime, and high-precision performance in cutting-edge quantum hardware.

The role requires hands-on experience with cryogenic systems, high vacuum, and cryogen handling, plus strong CAD and analysis tool skills. On-site work in Denver, CO is expected.

Qualifications

• Bachelor's degree in mechanical engineering, physics, or an equivalent technical field.
• 3+ years of hands-on experience designing, building, or operating cryogenic systems.
• Strong grounding in heat transfer, thermodynamics, and fluid mechanics at cryogenic temperatures.
• Hands-on experience with high-vacuum systems and helium leak detection.
• Experience safely handling cryogens such as liquid nitrogen and liquid helium.
• Proficiency in 3D CAD (SolidWorks preferred) and analysis tools such as Python, MATLAB, or ANSYS.
• Strong written and verbal communication skills.
• Self-starter who can drive results independently in a fast-moving environment.
• Able to work on-site in Denver, CO.

Responsibilities

• Develop Test Plans: Build comprehensive experiments that push our products to the limit to ensure the highest quality standards and identify improvements.
• Operate and Troubleshoot: Serve as a test pilot for advanced cryogenic systems, focusing on uptime risks and user experience.
• Drive Innovation: Collaborate with product and engineering teams to refine platform designs based on test findings.
• Support Global Operations: Partner with customers to root-cause issues and enable breakthroughs, with on-site travel as needed.
• Build our Customer Success Infrastructure: Document test and inspection procedures to standardize support.
• Engineer for Safety: Apply safety practices for cryogenic systems involving helium-3/helium-4, LN2, and high vacuum.

Skills

Cryogenic system design

Heat transfer

Thermodynamics

Fluid mechanics

High vacuum

Helium leak detection

Cryogen handling

3D CAD (SolidWorks)

Python

MATLAB

AN SYS

Technical writing

Self-starter

Education

Bachelor's degree in mechanical engineering, physics, or equivalent

Tools

SolidWorks

Python

MATLAB

ANSYS

Job description

About Us

Maybell Quantum is building the hardware foundation of the quantum era. Our redesigned dilution refrigerator gives labs more fridges per room, more experiments per fridge, and a level of reliability and usability the field has never had. We are a fast-growing, venture-backed team of scientists and engineers, and the cryogenic systems we design in Denver ship to leading quantum computing groups around the world.

What You\'ll Do

Test, Validate, & Iterate

• Develop Test Plans: Build comprehensive experiments that push our products to the limit to ensure the highest quality standards - and to find ways for \"the best to perform even better.\"
• Operate and Troubleshoot: Become the equivalent of a \"test pilot\" for the most advanced cryogenic systems in the world, with a heavy focus on evaluating the user experience and risks to uptime.
• Drive Innovation: Work with our product and engineering teams to refine our platforms' designs based on your tests and discoveries.

Support our Customer Success Team

• Support Global Operations: Partner with our customers to root-cause and solve issues, allowing them to achieve the next breakthrough in quantum computing. Occasionally travel on site to assist when required.
• Build our Customer Success Infrastructure: Document test, and inspection procedures to ensure a common standard across the company and the highest level of customer support.

Safety & Standards

• Engineer for Safety: Apply pressure-safety, relief-sizing, and oxygen-deficiency hazard practices to systems that handle helium-3/helium-4 mixture, liquid nitrogen, and high vacuum.

Who You Are

Required:

• Bachelor's degree (or higher) in mechanical engineering, physics, or an equivalent technical field.
• 3+ years of hands-on experience designing, building, or operating cryogenic systems.
• Strong grounding in heat transfer, thermodynamics, and fluid mechanics at cryogenic temperatures, including low-temperature material properties.
• Hands-on experience with high-vacuum systems and helium leak detection.
• Experience safely handling cryogens such as liquid nitrogen and liquid helium.
• Proficiency in 3D CAD (SolidWorks preferred) and analysis tools such as Python, MATLAB, or ANSYS.
• Strong written and verbal communication skills.
• Self-starter who can drive results independently in a fast-moving environment.
• Able to work on-site in Denver, CO.

Preferred:

• Experience designing, building, or significantly modifying dilution refrigerators or other sub-kelvin systems (ADRs, helium-3 systems).
• Master's degree or PhD in a relevant field.
• Experience with helium-3/helium-4 gas-handling systems.
• Experience with brazing, welding, indium seals, or other cryogenic joining and sealing methods.
• Background in quantum computing, scientific instrumentation, or superconducting hardware.
• Experience with pressure-system design under ASME or equivalent codes.
• Experience in a high-growth, venture-backed startup.

What We Offer

• Base Salary: $90,000 - $120,000/yr, depending on experience and qualifications, plus equity and performance bonus.
• Benefits: Medical, dental, and vision insurance; 401(k); paid time off and paid holidays
• Impact: Direct influence on the success of a company developing revolutionary technology.
• Exceptional Team: Collaboration with world-class scientists, engineers, and business leaders who are defining a new industry.