PsiQuantum is on a mission to build the first commercially useful quantum computer to solve humanity. Backed by Founders Fund and Redpoint.
About the role
The Senior Mechanical Design Engineer is responsible for designing highly complex optomechanical and optoelectronic packages. You will work closely with photonics, packaging, process, test, quality, supply chain, and external manufacturing partners to translate architecture and requirements into buildable, manufacturable, and verifiable package designs. Strong design skills incorporating mechanics of materials, thermodynamics, electronics integration, optical alignment, and precision design principles are a must.
What they're looking for
- Strong communication & interpersonal skills across engineering, operations, quality, and supplier teams
- Willingness to support colleagues and external partners to achieve schedule, quality, and build-readiness objectives
- Exercises independent judgement in resolving design, interface, and manufacturability tradeoffs
- Continuous learning mindset with interest in photonics packaging, process development, and production scale-up
- Execution of deliverables against schedule & quality targets in a fast-moving productization environment
- Experience with subcontractor management, supplier technical coordination, and manufacturing partner support
More about this role
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,...
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