Cryogenic Mechanical Engineer

The role

The Cryogenic Mechanical Engineer supports the design, analysis, testing, installation, and commissioning of cryogenic equipment and systems. This role focuses on cryostat design, cryogenic distribution systems, thermal-fluid modeling, thermal-mechanical modeling, mechanical design, and integration of cryogenic hardware.

What you will do

• Support the development and analysis of system-level mechanical and thermal-fluid models.
• Support the design of cryostats for quantum computer infrastructure.
• Support the design of cryogenic distribution systems connecting cryoplants and cryostats.
• Perform mechanical design, engineering calculations, and component selection.
• Prepare and maintain engineering drawings, models, specifications, and technical documentation.
• Support procurement and manufacturing activities for cryogenic equipment.
• Participate in technical discussions with vendors during design, manufacturing, and testing.
• Support laboratory testing, data collection, and analysis of cryogenic equipment and components.
• Support installation and commissioning activities for cryogenic equipment.
• Assist with the investigation and resolution of field issues related to mechanical and cryogenic systems.

Required qualifications

• B.SC. or M.Sc. in Mechanical Engineering, Aerospace Engineering, or a related engineering discipline.
• 0–3 years of relevant engineering experience, including internships, academic research, or industry experience.
• Good understanding of fundamental engineering principles, including heat transfer, fluid mechanics, thermodynamics, and structural mechanics.
• Experience with engineering analysis and/or mechanical design tools such as ANSYS Workbench, SolidWorks, Fluent, SpaceClaim, MATLAB, Mathcad, or equivalent tools.
• Ability to perform engineering calculations and clearly document assumptions, methods, and results.
• Ability and willingness to work on both analytical and hands-on engineering activities.
• Ability to work effectively with senior engineers and cross-functional teams.
• Ability to adapt to changing priorities and handle multiple assignments.

Nice to have

• Academic, internship, research, or industry experience with cryogenic systems, vacuum systems, cryostats, cryocoolers, or cryogenic distribution systems.
• Experience with Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), finite difference methods, or thermal-fluid modeling.
• Familiarity with pressure vessels, piping systems, and engineering codes such as ASME BPVC and PED.
• Hands-on experience with fabrication methods such as machining, welding, brazing, soldering, or forming.
• Hands-on experience with laboratory testing, instrumentation, and data acquisition.
• Experience creating or reviewing mechanical drawings.
• Familiarity with Geometric Dimensioning & Tolerancing per ASME Y14.5.
• Interest in developing practical experience with manufacturing, installation, commissioning, and troubleshooting of complex engineering systems.

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 silicon photonics to build and deploy million-qubit, fault-tolerant quantum systems.