System Commissioning Engineer

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: This position supports development and execution of all aspects related to system commissioning projects from initial engagement, design reviews, checklists, safety support, script development, vendor coordination, testing and reporting. Responsibilities: Review of system designs. Responsible for the installation, maintenance, troubleshooting, and operation of advanced test infrastructure, including cryostats, vacuum systems, lasers, optical fiber assemblies, and electronic systems. Work closely to other validation teams to ensure commissioning plan match subsystems validation and quantum validation flows and criteria. Work closely to on-site staff to train for installation, including electrical, optical, mechanical, thermal, software and safety needs. Carry out all necessary tests and procedures required to verify the system installation. Work closely to on-site staff to train for execution of power on and calibration procedures to bring up the system as well as maintenance. Ensure system operation, including maintenance, re-calibrations, etc. Experience/Qualifications: B.Sc., M.Sc., or Ph.D in Mechanical, Electronics, Optical Engineering or equivalent fields. At least 4 year of relevant industry experience is preferred. Demonstrated ability to analyze complex situations and utilize troubleshooting skills, systems and tools, and creative problem-solving abilities under pressure. Experience in device installation and testing, software/firmware upgrade, re-bootstrapping and decommission. Ability to read and interpret electrical schematics, optical network diagrams, mechanical drawings, P&ID’s and specifications. Solid understanding of fiber-optic technology including cable types, connector types, optic types, patch panels, and optical transport technologies is preferred. Experience with optical fiber network, including splicing procedure and operating equipment is preferred. Experience with cryogenic systems or knowledge of basic thermodynamics and heat transfer and fluid flow is preferred. Experience