Silicon Photonics Test Engineer

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.

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.

Position:
Mid‑Senior level, Full‑time.

We are seeking a Silicon Photonics Test Engineer to develop, maintain, and execute automated optical/electrical test systems for wafer‑level photonic devices. The ideal candidate will have hands‑on experience with photonics testing, data analysis, and test automation, and a solid understanding of optoelectronic device physics and semiconductor processes.

• Design and perform optical and electrical characterization of silicon photonic components (e.g., modulators, detectors, filters, couplers).
• Develop and maintain automated test setups for wafer‑level and die‑level testing.
• Interface with design, process, and packaging teams to define test requirements, performance metrics, and data formats.
• Analyze large datasets to extract key device parameters and identify performance trends or process drifts.
• Collaborate with software engineers to implement data acquisition and control in Python, MATLAB, or similar frameworks.
• Perform calibration, alignment, and validation of optical test stations.
• Document test methodologies, standard operating procedures (SOPs), and support transfer of test processes to production.
• Contribute to the continuous improvement of measurement accuracy, throughput, and system reliability.

• B.S. or M.S. in Electrical Engineering, Physics, Optics, Photonics, or a related field.
• 2–5 years of experience in photonics testing or optical characterization (academic or industry).
• Hands‑on experience with optical and electrical instrumentation, including power meters, tunable lasers, polarization controllers, photodiodes (PDs), optical vector analyzers, VNAs, SMUs, and optical/electrical switches.
• Proficiency in data analysis and automation scripting, especially in Python.
• Familiarity with semiconductor wafer probing, electrical test systems, and instrumentation control interfaces (e.g., GPIB, VISA, TCP/IP).
• Solid understanding of silicon photonics device physics and integrated optics.
• Demonstrated problem‑solving ability, strong documentation skills, and effective team collaboration.

• Experience with wafer‑level photonic probing or automated probe stations.
• Knowledge of optical packaging,…