Senior Cryogenic System Engineer

The role

The Senior Cryogenic System Engineer will design, analyze, and integrate cryogenic systems for quantum computing infrastructure. This role covers the full engineering lifecycle including requirements, design, testing, and operational support.

What you will do

• Lead integration of cryostat components including mechanical hardware, sensors, valves, and instrumentation.
• Lead integration of cryogenic equipment including cryostats, distribution systems, vacuum systems, cryoplants, and storage.
• Apply thermodynamics, heat transfer, fluid mechanics, and structural mechanics to develop designs.
• Perform detailed design, analysis, and testing of cryogenic system components and assemblies.
• Coordinate technical activities across multiple disciplines.
• Provide hands-on guidance during fabrication, installation, integration, and operations.
• Lead development of verification and validation test plans and evaluate results.
• Select, support, and direct vendors during design, manufacturing, and testing.
• Analyze field issues related to cryogenic design and provide technical solutions.
• Participate in multidisciplinary project teams through all phases of product development.

Required qualifications

• B.Sc., M.Sc., or Ph.D. in Mechanical Engineering, Aerospace Engineering, Physics, or a related discipline.
• 3–5+ years of experience applying engineering principles to solve complex problems related to thermal-fluid systems and/or cryogenics.
• Experience with cryogenic mechanical systems, including cryostats, cryogenic distribution systems, valve boxes, and/or cryoplants.
• Experience with requirements management, materials and component selection, FMEA, tolerance analysis, and test planning.
• Ability to provide technical leadership in ambiguous situations.
• Demonstrated analytical, problem-solving, and communication skills.

Nice to have

• Experience with software tools such as Mathcad, SINDA/FLUINT, Thermal Desktop, SINAPS, ANSYS APDL, ANSYS Workbench, SolidWorks, SpaceClaim, LabVIEW, and MATLAB.
• Experience working with cryogenic systems, cryostats, cryocoolers, cryogenic distribution systems, vacuum pumps, and cryoplants.
• Experience coordinating technical activities during construction, installation, or commissioning of large-scale scientific or industrial facilities.
• Experience applying best practices to the design, fabrication, and assembly of cryogenic equipment.
• Experience with material performance, design constraints, and manufacturing constraints under cryogenic conditions.
• Hands-on experience with fabrication methods such as machining, welding, brazing, soldering, and forming.
• Hands-on experience performing lab testing and data acquisition.
• Understanding of Geometric Dimensioning & Tolerancing per ASME Y14.5.

Benefits

• Competitive health coverage for you and your dependents
• 401(k) with company match
• Equity grants
• Access to financial wellness tools and planning resources
• Wellness benefits
• Family support programs
• Life and disability insurance
• Paid leave programs
• Company-designated paid holidays
• Discretionary time off (DTO)
• End-of-year company shutdown

About the company

PsiQuantum's mission is to build the first useful quantum computers. The company uses a silicon photonics architecture to build and deploy million-qubit, fault-tolerant quantum systems.