Senior Mechanical Design Engineer

Senior Mechanical Design Engineer at Psi Quantum
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Psi Quantum’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 Global Foundries—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, Psi Quantum 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.

Psi Quantum 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.

The Senior Mechanical Design Engineer is responsible for designing and qualifying the performance of innovative electro‑optical subsystems, working closely with electronics packaging, systems integration, and edge coupling teams.

• Work independently with limited direction, in a team environment across functional and organizational boundaries.
• Assist with systems architecture development at the subsystem level.
• Perform large or complex portions of projects where responsibility includes definition, completion, technical quality, across teams.
• Provide frequent written and oral presentations, status reports, and updates for a variety of audiences.
• Accept constructive feedback from resident experts and coordinate communications between different groups.
• Serve as mentor to younger engineers.
• Distill complex mechanical issues and drive convergence among electrical, optical, and packaging teams.
• Mechanical design work, including:
• Strong mechanical design and analysis skills, expertise in GD&T.
• Generate & maintain BOMs & build standards.
• Generate and maintain process flow documentation.
• Integration of CAD files across multiple teams.
• Fixture design & fabrication.
• Test set‑up design & fabrication.
• Generate & maintain a Specification Tree.
• Generate & maintain a Drawing Tree for builds & variants.
• Manage builds through the use of PDM / Arena.
• Tolerance analysis – RSS & worst case.
• DFMEA & risk analysis heat maps.
• Input & maintain workflow documentation in MES.
• Perform simple simulations of structural deflections, stresses.

• Master’s Degree in Mechanical Engineering or a relevant discipline.
• Minimum 5 years of experience;
  Preferred – 10 years of experience.
• Working knowledge of DfM and design issues associated with volume production, ideally with direct experience.

Psi Quantum provides equal employment opportunity for all applicants and employees. Psi Quantum 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:

Psi Quantum will only reach out to you using an official Psi Quantum email address and will never ask you for bank account information as part of the interview process. Please report any suspicious activity to .

We are not accepting unsolicited resumes from employment agencies.

Salary ranges:

• U.S. Base Pay Range: $140,000—$153,000 USD.
• Bay Area Pay Range: $170,000—$187,000 USD.

Senior level, Full‑time, Engineering and Information Technology.

Job type:
Full‑time. Industry: Computer Hardware Manufacturing.