Senior Cryostat Equipment Engineer

PsiQuantum; Milpitas (CA); On-site; USD 130,000 - 145,000; Full time

Job summary

PsiQuantum is hiring for a position focused on leading the installation and integration of cryostats and associated subsystems in Milpitas, California. The role requires hands-on experience with cryogenic and ultra-high vacuum systems, along with a strong understanding of vacuum technology. Responsibilities include executing commissioning procedures, optimizing vacuum performance, and performing maintenance on cryostats and vacuum systems. The compensation range is competitive, with a U.S. base pay range of $130,000—$145,000 USD.

Qualifications

• 3+ years of hands-on experience with cryogenic and/or high or ultra-high vacuum systems.
• Experience installing and commissioning complex mechanical and vacuum systems.
• Strong understanding of vacuum technology, including pumping systems and sealing methods.

Responsibilities

• Lead installation and integration of cryostats and associated subsystems.
• Execute commissioning procedures including vacuum pump-down and leak checking.
• Monitor and optimize vacuum performance alongside cryogenic stability.

Skills

Cryogenic systems expertise

Vacuum technology knowledge

Thermodynamics understanding

Problem-solving skills

Education

Bachelor’s degree in Mechanical Engineering, Physics, or related field

Tools

Vacuum pumps

Thermal diagnostics

Job description

Responsibilities

• Lead installation and integration of cryostats and associated subsystems, including vacuum chambers, pumps, valves, and instrumentation.
• Execute commissioning procedures including vacuum pump-down, leak checking, bake-out processes, cooldown, and system qualification.
• Develop and maintain standard operating procedures (SOPs) for cryostat and vacuum system operation.
• Monitor and optimize vacuum performance (pressure levels, leak rates, outgassing) alongside cryogenic thermal stability.
• Troubleshoot and resolve issues related to vacuum integrity, cryogenics, and thermal interfaces.
• Perform helium leak detection, residual gas analysis (RGA), and vacuum diagnostics.
• Collaborate with cross-functional teams to integrate vacuum and cryogenic systems with quantum hardware.
• Perform preventive and corrective maintenance on cryostats, vacuum systems, and supporting infrastructure.
• Maintain detailed documentation, logs, and test reports for vacuum and cryogenic systems.

Experience and Qualifications

• Bachelor’s degree in Mechanical Engineering, Physics, or a related field (advanced degree preferred).
• 3+ years of hands‑on experience with cryogenic and/or high or ultra‑high vacuum systems.
• Strong understanding of vacuum technology (UHV practices, pumping systems, sealing methods, materials compatibility).
• Experience with vacuum pumps (turbo, cryo, roughing), gauges, and leak detection methods.
• Solid foundation in thermodynamics and heat transfer.
• Experience installing and commissioning complex mechanical and vacuum systems.
• Ability to read and interpret engineering drawings, vacuum schematics, and P&IDs.
• Strong troubleshooting and problem‑solving skills in lab or manufacturing environments.

Equal Opportunity Employer Statement

PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.

Compensation

U.S. Base Pay Range: $130,000—$145,000 USD

Bay Area Pay Range: $150,000—$165,000 USD