Top 124 quantum algorithm quantum algorithm quantum physics quantum information Jobs

Cryostat Equipment Engineer
PsiQuantum —Milpitas, CA
- $110,000 - $145,000 a year
- Email
- Analysis skills
- Continuous improvement
- Senior level
Validation Engineer, Cryogenic
PsiQuantum —Milpitas, CA
- $130,000 - $162,000 a year
- Email
- 3 years
- Scripting
- Senior level
Senior Optical Packaging Process Engineer
PsiQuantum —Milpitas, CA
- $160,000 - $200,000 a year
- Email
- 5 years
- Assembly
- Training & development
Principal Quantum Applications Scientist - 731
Quantinuum —Broomfield, CO
- $189,000 - $220,000 a year
- Full-time
- Office
- Master's degree
- Doctor of Philosophy
- Paid parental leave
- Paid holidays
Senior Embedded Software Engineer - (Systems: Technical Pre / Post-Sales)
Riverlane —Boston, MA
- $145,000 - $205,000 a year
- Full-time
- Computer Science
- System design
- C++
- Health insurance
- 401(k)
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1d
Principal Characterization-Failure Analysis Engineer
PsiQuantum —Milpitas, CA
- $165,000 - $200,000 a year
- Email
- Analysis skills
- Senior level
- Electrical Engineering
Senior Integration/API architect
PsiQuantum —Palo Alto, CA
- $165,000 - $200,000 a year
- Email
- 7 years
- Computer Science
- Schematics
Firmware/FPGA Engineer II (Onsite)
Raytheon Technologies Corporate Headquarters —Cambridge, MA
- $68,900 - $131,100 a year
- Full-time
- System design
- Mid-level
- Linux
- Paid holidays
- Disability insurance
Principal Optical Fiber Architect
PsiQuantum —Milpitas, CA
- $170,000 - $265,000 a year
- Email
- 5 years
- Doctor of Philosophy
- Organizational skills
4d
Silicon Photonics Design Engineer
PsiQuantum —Palo Alto, CA
- $130,000 - $165,000 a year
- Email
- Assembly
- Analysis skills
- Continuous improvement
Photonic Design Automation Engineer
PsiQuantum —Palo Alto, CA
- $130,000 - $165,000 a year
- Email
- 6 years
- Computer Science
- Doctor of Philosophy
Senior Cryostat Equipment Engineer
PsiQuantum —Milpitas, CA
- $130,000 - $165,000 a year
- Email
- Schematics
- 3 years
- Senior level
Technical Lead, Single Photon Sources Validation
PsiQuantum —Milpitas, CA
- $195,000 - $225,000 a year
- Email
- 11+ years
- Mentoring
- Scripting
Product Manager (Quantum-safe Cryptographic Inventory)
Palo Alto Networks —Santa Clara, CA
- $148,700 - $240,525 a year
- Full-time
- Computer Science
- Product management
- In-person
Principal Photonics Design Methodology Engineer
PsiQuantum —Palo Alto, CA
- $230,000 - $255,000 a year
- Email
- Computer Science
- Master's degree
- 8 years
Principal Firmware/FPGA Engineer (Onsite)
Raytheon Technologies Corporate Headquarters —Cambridge, MA
- $107,500 - $204,500 a year
- Full-time
- 5 years
- Linux
- In-person
- Paid holidays
- Disability insurance
PIC Characterization Engineer
PsiQuantum —Palo Alto, CA
- $110,000 - $175,000 a year
- Email
- 3 years
- Doctor of Philosophy
- Senior level
3d
Postdoctoral Research Associate: Quantum Algorithms for f-Element Chemistry and Separations
Los Alamos National Laboratory —Los Alamos, NM
- Email
- Pass drug screening
- Doctor of Philosophy
- In-person
- Disability insurance
- Health insurance
Senior Software Engineer - Developer Tools
IonQ —Bothell, WA
- $145,920 - $191,047 a year
- 6 years
- Computer Science
- System design
- Paid holidays
- Health insurance
Senior Engineer, System Calibration (Electro-Optics)
PsiQuantum —Milpitas, CA
- $148,000 - $195,000 a year
- Email
- 3 years
- Analysis skills
- Doctor of Philosophy

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Cryostat Equipment Engineer

PsiQuantum -
Milpitas, CA

Apply Now

Job Details

Full-time
$110,000 - $145,000 a year

Qualifications

Mechanical blueprint interpretation
Defect resolution root cause analysis
System troubleshooting
Defect analysis
Mechanical system commissioning projects
Electrical schematic reading and interpretation
Piping and instrumentation diagrams (P&IDs)
Industrial equipment troubleshooting
Electrical instrumentation
Mechanical drawings
Instrumentation and control equipment installation
Commissioning phase involvement
Failure analysis

Full Job Description

PsiQuantum’s mission is to build the first useful quantum computers—machines 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 approach is based on silicon photonics. By leveraging the advanced semiconductor manufacturing industry—including partners like GlobalFoundries—we use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photons don’t feel heat, are immune to electromagnetic interference, and integrate with existing cryogenic cooling and standard fiber-optic infrastructure.

In 2024, PsiQuantum announced 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 defining—and that now is the time to scale.

PsiQuantum also develops the algorithms and software needed to make these systems commercially valuable. Our application, software, and industry teams work directly with leading Fortune 500 companies—including Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical—to prepare quantum solutions for real-world impact.

Quantum computing is not an extension of classical computing. It represents a fundamental shift—and a path to mastering challenges that cannot be solved any other way. The potential is enormous, and we have a clear path to 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:

Bachelor’s 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 [email protected].

We are not accepting unsolicited resumes from employment agencies.

The ranges below reflect the target ranges for a new hire base salary. One is for the Bay Area (within 50 miles of HQ, Palo Alto), the second one (if applicable) is for elsewhere in the US (beyond 50 miles of HQ, Palo Alto). If there is only one range, it is for the specific location of where the position will be located. Actual compensation may vary outside of these ranges and is dependent on various factors including but not limited to a candidate's qualifications including relevant education and training, competencies, experience, geographic location, and business needs. Base pay is only one part of the total compensation package. Full time roles are eligible for equity and benefits. Base pay is subject to change and may be modified in the future.

U.S. Base Pay Range

$110,000 - $120,000 USD

Bay Area Pay Range

$128,000 - $145,000 USD

Apply Now

Refine Your Search

quantum algorithm quantum algorithm quantum physics quantum information jobs

Cryostat Equipment Engineer

Validation Engineer, Cryogenic

Senior Optical Packaging Process Engineer

Principal Quantum Applications Scientist - 731

Senior Embedded Software Engineer - (Systems: Technical Pre / Post-Sales)

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Senior Integration/API architect

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Principal Firmware/FPGA Engineer (Onsite)

PIC Characterization Engineer

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Senior Engineer, System Calibration (Electro-Optics)

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