Principal Digital Design 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: The digital design engineer will join PsiQuantum's Electronic Sub-Systems team in the development of innovative digital microarchitecture definition, documentation, implementation, and validation for FPGAs. Responsibilities: Logic design, debugging, and verification using Verilog/SystemVerilog for FPGAs. FPGA synthesis, constrains, and implementation. Perform functional verification and debugging of digital designs using simulation tools. FPGA testing and validation in laboratory to ensure functionality and performance meet spec. Contribute to analysis of system requirements needed to generate digital microarchitecture definition and documentation. Collaborate with system architecture, software, and firmware teams. Experience/Qualifications: Degree in computer engineering, electrical engineers, computer science, or related field. MS/PhD preferred. Experience with Verilog/SystemVerilog. 12+ years of experience in FPGA design with hands-on expertise in RTL design, verification, and validation. Experience with FPGA development including debugging/validation in laboratory environment. Ability to independently understand system specifications and contribute to microarchitectures and documentation. Ability to collaborate effectively across departments, sites, and time zones. Excellent communication skills. PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum 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: PsiQuantum will only reach out to you using an official PsiQuantum email address and will never ask you for bank account information as part of the interview process. Please report any suspicious acti