Senior Cryostat Equipment Engineer

PSI Quantum; Milpitas (CA); On-site; USD 90,000 - 120,000; Full time

Job summary

PSI Quantum in Milpitas is looking for a Senior Cryostat Equipment Engineer to lead the installation and ongoing operation of cryogenic and ultra‑high vacuum systems essential for quantum computing hardware. This position involves troubleshooting and optimizing vacuum systems to ensure reliable performance.

Applicants should have a Bachelor’s degree in Mechanical Engineering or related fields with at least 3 years of experience in vacuum technology. The role offers opportunities for professional growth in a cutting-edge industry.

Qualifications

• 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).
• Experience installing and commissioning complex mechanical and vacuum systems.

Responsibilities

• Lead installation and integration of cryostats and associated subsystems.
• Execute commissioning procedures including vacuum pump‑down and cooldown.
• Monitor and optimize vacuum performance alongside cryogenic thermal stability.

Skills

Cryogenic systems expertise

Vacuum technology understanding

Troubleshooting skills

Thermodynamics knowledge

Reading engineering drawings

Education

Bachelor's degree in Mechanical Engineering

Advanced degree preferred

Tools

Vacuum pumps (turbo, cryo)

Leak detection methods

Job description

Job Summary

PsiQuantum is seeking a highly skilled Senior Cryostat Equipment Engineer to lead the installation, commissioning, and ongoing operation of advanced cryogenic and ultra‑high vacuum (UHV) systems supporting quantum computing hardware. This role is critical to ensuring reliable ultra‑low‑temperature and high‑vacuum environments required for quantum device performance.

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 & 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

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.