Senior Integration & Test Engineer; Optomechanical, Thermal

Senior Integration & Test Engineer (Optomechanical, Thermal)

Milpitas, California, United States

Quantum computing holds the promise of humanity’s mastery over the natural world, but only if we can build a real quantum computer. Psi Quantum is on a mission to build the first real, useful quantum computers, capable of delivering the world‑changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault‑tolerant error correction within a scalable architecture and a data‑center footprint.

By harnessing the laws of quantum physics, quantum computers can provide exponential performance increases over today’s most powerful supercomputers, offering the potential for extraordinary advances across a broad range of industries including climate, energy, healthcare, pharmaceuticals, finance, agriculture, transportation, materials design, and many more.

Psi Quantum has determined the fastest path to delivering a useful quantum computer, years earlier than the rest of the industry. Our architecture is based on silicon photonics, enabling production of components at Tier‑1 semiconductor fabs such as Global Foundries, where we leverage high‑volume semiconductor manufacturing processes. Photons do not feel heat or electromagnetic interference, allowing us to use existing cryogenic cooling systems and industry‑standard fiber connectivity.

In 2024, Psi Quantum announced two government‑funded projects to support the build‑out of our first Quantum Data Centers and utility‑scale quantum computers in Brisbane, Australia and Chicago, Illinois. Both projects are backed by nations that understand quantum computing’s potential impact and the need to scale this technology to unlock that potential.

We are looking for an Integration & Test Engineer to join the Packaging Design team  will help design, develop, and integrate photonics and optoelectronics packaging. The Senior Integration & Test Engineer will lead the evaluation of packaging designs and focus on the qualification and acceptance testing of photonics chips, electronics, and integrated subassemblies. This includes test design & execution, data processing, material characterization, and root‑cause investigative work.

• Design & execute tests using DoE and other statistical analysis techniques, from component level to integrated subassemblies.
• Perform hands‑on thermal, optomechanical, and materials testing in both the lab and real‑world environments.
• Interpret optical, thermal, electrical, and mechanical metrics and evaluate design options.
• Guide assembly process development to ensure alignment to performance requirements.
• Conduct reliability testing, root cause analysis, and corrective actions for prototype and production devices.

• Degree in Mechanical, Electrical, Materials Science or related field (BSc with 6+ years of experience, MS with 3+ years).
• Expertise in Finite Element Analysis, Failure Modes and Effects Analysis (FMEA).
• Experience with data acquisition tools and techniques, including sensors & instrumentation.
• Experience in failure analysis methods and tools, including root‑cause analysis and corrective actions.
• Experience in vacuum and cryogenic environments preferred.
• Collaboration across multiple engineering disciplines is a must.
• Ability to communicate complex results & issues clearly and concisely.

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.

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We are not accepting unsolicited resumes from employment agencies.