PsiQuantum
Senior Cryostat Equipment Engineer
Milpitas, California, United States · Senior · Full-time
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Sponsors, but it's cap-subject — you still face the weighted lottery (~45% per draw at Level III). Good if you win; have a cap-exempt backup on your list.
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Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
$11,835 more — $141,835 — moves this role to Level II and 2 lottery entries. That figure is inside the range the employer already advertised.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $141,835 would place this position at wage Level II. That figure is within the posted range, and I'd like to target it. This role classifies under "Mechanical Engineers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Mechanical Engineers (17-2141) · San Jose-Sunnyvale-Santa Clara, CA. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
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About the role
- 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.
- 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.
- 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.
Requirements
- 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.
- Experience installing and commissioning complex mechanical and vacuum systems.
- Ability to read and interpret engineering drawings, vacuum schematics, and P&IDs.
- Solid foundation in thermodynamics and heat transfer.
- Strong troubleshooting and problem-solving skills in lab or manufacturing environments.
Nice to have
- Bachelor's degree in Mechanical Engineering, Physics, or a related field (advanced degree preferred).
Compensation
- $130,000 - $145,000 USD
- Bay Area Pay Range
- $150,000 - $165,000 USD
- The ranges below reflect the target ranges for a new hire base salary.
Benefits
- Full time roles are eligible for equity and benefits.
Company info
- Note: PsiQuantum will only reach out to you using an official PsiQuantum email address and will never ask you for bank account information as part of the interview process.
- We are not accepting unsolicited resumes from employment agencies.
- Base pay is only one part of the total compensation package.
Visa & Work Authorization
- g 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, domesti
This listing is sourced directly from PsiQuantum's careers page and normalized into a canonical job model.