Cryostat Equipment Engineer

PsiQuantumsmission is to build the first useful quantum computersmachines capable of delivering the breakthroughs the field has long promised. Since our founding in 2016 our singular focus has been to build and deploy million-qubit fault-tolerant quantum systems.

Quantum computers harness the laws of quantum mechanics to solve problems that even the most advanced supercomputers or AI systems will never reach. Their impact will span energy pharmaceuticals finance agriculture transportation materials and other foundational industries.

Our architecture and approachisbased on silicon photonics. Byleveragingthe advanced semiconductor manufacturing industryincluding partners like GlobalFoundrieswe use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photonsdontfeel heat are immune to electromagnetic interference and integrate with existing cryogenic cooling and standard fiber-optic infrastructure.

In 2024PsiQuantumannounced government-funded projects to support the build-out of our first utility-scale quantum computers in Brisbane Australia and Chicago Illinois. These initiatives reflect a growing recognition that quantum computing will be strategically and economically definingand that now is the time to scale.

PsiQuantumalso develops the algorithms and software needed to make these systems commercially valuable. Our application software and industry teams work directly with leading Fortune 500 companiesincluding Lockheed Martin Mercedes-Benz Boehringer Ingelheim and Mitsubishi Chemicalto prepare quantum solutions for real-world impact.

Quantum computing is not an extension of classical computing. Itrepresentsa fundamental shiftand a path to mastering challenges that cannot besolvedany other way. The potential is enormous and we have a clearpathto make it real.

Come join us.

Job Summary:

PsiQuantum is seeking a Cryostat Equipment Engineer to lead the installation commissioning and ongoing maintenance of advanced cryogenic systems supporting our quantum computing hardware. This role is critical to ensuring the reliable operation of large-scale cryostats and associated vacuum and instrumentation systems in a cutting-edge R&D and production environment.

Responsibilities:

• Install and commission quantum computing cryostats including integration with mechanical electrical and control subsystems.
• Operate and maintain high-vacuum systems (UHV/HPV) including pumps gauges valves and leak detection equipment.
• Develop and execute commissioning procedures acceptance tests and system validation protocols.
• Monitor cryostat performance diagnose faults and perform preventative and corrective maintenance.
• Interface with instrumentation systems (temperature sensors pressure transducers flow controllers and data acquisition systems).
• Collaborate with cross-functional teams (quantum hardware facilities controls and safety) to ensure system reliability and uptime.
• Maintain detailed documentation including schematics procedures maintenance logs and system modifications.
• Support continuous improvement efforts in system design reliability and operational efficiency.
• Ensure compliance with safety standards related to cryogens vacuum systems and high-voltage equipment.

Experience/Qualifications:

• Bachelors degree in Mechanical Engineering Physics Electrical Engineering or a related field (or equivalent experience).
• Hands-on experience with high-vacuum or ultra-high-vacuum (UHV) systems.
• Experience installing commissioning and maintaining complex equipment in a lab or industrial setting.
• Familiarity with cryogenic systems (e.g. dilution refrigerators liquid helium systems or closed-cycle cryocoolers).
• Experience with instrumentation and data acquisition systems.
• Strong troubleshooting and root-cause analysis skills.
• Ability to read and interpret engineering drawings P&IDs and electrical schematics.

Preferred Qualifications

• Experience working with cryostats in quantum computing superconducting systems or low-temperature physics environments.
• Knowledge of vacuum system design leak detection (helium mass spectrometry) and materials compatibility.
• Familiarity with control systems (e.g. PLCs LabVIEW or similar platforms).
• Experience in a cleanroom or semiconductor environment.
• Advanced degree in a relevant field.

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.

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. Please report any suspicious activity to .

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