System Modeling and Simulation Lead (Quantum Systems) - Milpitas, California, United States

Originally posted 8 October 2026 by the employer.

Join the team building predictive, system-level models for quantum computers based on photonic and electronic system descriptions.

About the role

This role involves building predictive, system-level models for PsiQuantum's quantum computer based on photonic, electronic, and other system descriptions, translating nonidealities into key quantum performance metrics.

What you'll do

• Build predictive system-level quantum performance models, ingesting photonic, electronic, and mixed-domain system descriptions.
• Translate component and interface performance, including loss, noise, jitter, drift and stability, crosstalk, and false-count rates, into end-to-end predictions of quantum system metrics.
• Develop coherent, reusable system abstractions and reduced-order or behavioral models that connect logical intent to physical-system behavior.
• Drive model validation and closure by comparing model predictions against component, subsystem, and integrated-system measurements.
• Develop maintainable, modular simulation software in Python with automated tests, version control, and clear APIs.
• Partner with architecture, validation, design, photonics, electronics, controls, calibration, detailed physics modeling, and systems engineering teams.

What you'll need

• MS in Systems Engineering, Applied Mathematics, Physics, Applied Physics, Electrical Engineering, Computer Engineering, or a related field with 10+ years of relevant industry experience, OR PhD in a similar field with 6+ years of relevant industry experience.
• Strong foundation in systems modeling for complex, multi-domain physical systems.
• Strong understanding of signal processing, noise analysis, timing and frequency-domain behavior, stochastic processes, and statistical data analysis.
• Advanced proficiency in Python scientific computing and experience building production-quality simulation or analysis software.
• Demonstrated experience with graph-based system representations, numerical simulation, and model validation for complex physical systems.
• Proficiency with modern version-control tools and collaborative workflows, particularly Git.
• Exceptional written and verbal communication skills.

Skills: quantum computer, system-level models, photonic, electronic, system descriptions