Quantum QCVV Engineer: Characterization & Validation

PsiQuantum; United States; Remote; USD 120,000 - 190,000; Full time

Job summary

PsiQuantum is seeking a mid-level Quantum Characterization, Verification, and Validation Engineer to advance QCVV for large photonic quantum systems. You will develop scalable protocols, connect experimental data to quantum performance, and drive methods from problem definition to implementation.

The role emphasizes hands-on modeling, simulation on GPUs, and collaboration across hardware, software, and systems teams to improve characterization and reliability of quantum devices.

Qualifications

• Ph.D. or equivalent experience in Physics, Electrical Engineering, Applied Mathematics, Computer Science, or a related field.
• Experience characterizing or modeling quantum channels, noisy quantum circuits, quantum processes, or quantum error mechanisms.
• Experience developing numerical simulations for quantum systems, quantum circuits, or noisy quantum processes.
• Programming experience for scientific computing and data analysis, preferably in Python.

Responsibilities

• Develop scalable QCVV methods for characterizing large quantum systems, quantum channels, and system-level quantum behavior.
• Develop statistical and numerical methods for extracting meaningful performance information from limited, noisy, and indirect measurement data.
• Build models that connect observed experimental data to underlying quantum channels, error mechanisms, and system-level performance metrics.
• Use large-scale quantum circuit simulation to evaluate characterization protocols, diagnose failure modes, and understand the behavior of noisy quantum channels.
• Apply simulation methods such as tensor networks, GPU-accelerated computation, stabilizer methods, and Monte Carlo techniques where appropriate.
• Work with experimental, architecture, software, and systems teams to compare measured system behavior against theoretical and numerical models.
• Contribute to the definition of diagnostic observables and data analysis pipelines needed for reliable system characterization.
• Document methods, assumptions, limitations, and results clearly.
• Communicate progress, challenges, uncertainties, and conclusions to technical and cross-functional stakeholders.
• Take ownership of research tasks from problem definition through implementation, validation, analysis, and communication.

Skills

Quantitative reasoning

Independent work

Communication

Python

Education

PhD or equivalent

Tools

PyTorch

JAX

TensorFlow

CUDA

CuPy

NumPy/SciPy

ITensor

Stim

Job description

PsiQuantum is seeking a mid-level Quantum Characterization, Verification, and Validation Engineer to advance QCVV for large photonic quantum systems. You will develop scalable protocols, connect experimental data to quantum performance, and drive methods from problem definition to implementation.

The role emphasizes hands-on modeling, simulation on GPUs, and collaboration across hardware, software, and systems teams to improve characterization and reliability of quantum devices.