Senior Cryogenic 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:

We are seeking a technically adept and hands-on Senior Cryogenic Engineer to lead and supportthe installation integration commissioning and operation of multiple helium cryoplants andassociated cryogenic systemsparticularly in support of quantum computing applications. The
ideal candidate will possess a unique combination of strategic program and project managementexpertise exceptional troubleshooting abilities and deep technical knowledge in vacuum systemsand helium cryogenics. Proven experience with process instrumentation and control systems isessential. This role requires excellence in both field execution and system-level design leadership.

Responsibilities:

• Coordinate and supervise the installation commissioning and operation of two helium cryoplants and related infrastructure.
• Optimize helium process and system control strategies.
• Integrate cryoplants with cryogenic distribution systems and cryostats used in quantum computing environments.
• Provide expert-level troubleshooting of cryogenic systems including instrumentation faults vacuum failures and control logic anomalies.
• Lead the commissioning of cryoplants and cryostats including system calibration leak checking and vacuum pumping procedures.
• Lead and manage operational teams including training and guiding operators during startup maintenance and fault recovery.
• Develop maintenance strategies for cryoplants and support equipment.
• Participate in FATs and SATs and lead the commissioning of process automation and control systems including sensor validation and PLC tuning.
• Spearhead the development and review of P&IDs and participate in operability and HAZOP reviews for safety and performance assurance.
• Maintain high-performance vacuum systems identify and repair leaks.

Experience/Qualifications:

• . in Mechanical Electrical or Chemical Engineering.
• 5 years of hands-on experience with cryogenic systems including helium refrigeration LNG superconducting magnets or similar technologies.
• Proven ability to troubleshoot complex cryogenic and process systems including instrumentation vacuum integrity and control issues.
• Strong working knowledge of PLC-based industrial control systems and process instrumentation (pressure flow temperature vacuum sensors).
• Ability to provide technical leadership and resolve issues in high-pressure ambiguous situations.
• Familiarity with design and implementation of control/instrumentation systems for industrial or scientific facilities.

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.

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